NIDEK CO., LTD. Patent applications |
Patent application number | Title | Published |
20160128561 | OPTICAL TOMOGRAPHY DEVICE - An optical tomography device is an optical tomography device that includes a first light source; and an optical device configured to guide first light from the first light source to a measurement target eye and detect interference light obtained from reflected light from the measurement target eye. The optical tomography device further includes: a second light source configured to emit aiming light indicative of a position to which the first light is applied; and an optical probe having an opening at a distal end and configured capable of being inserted in an eyeball. The optical probe applies the first light, into the measurement target eye through the opening, guides the reflected light to the optical device, and applies, through the opening, the aiming light to the position to which the first light is applied. | 05-12-2016 |
20160002768 | DYEING DEVICE - A dyeing device dyes a resin body by vaporizing and depositing a sublimation dye adhered to a dyeing base to a resin body and fixing the dye to the resin body. The dyeing device lowers the pressure inside a closed chamber that closes the periphery of the resin body by a pump. In the state where the adhesion surface of the dyeing base to which the dye is adhered faces the resin body without contact, by heating the dye adhered to the dyeing base inside the closed chamber of which the pressure is lowered, the dye is sublimated, vaporized, and deposited on the resin body. The pressure inside the closed chamber is raised higher than the pressure at the vaporizing and depositing time. By irradiating the resin body on which the dye is vaporized and deposited with electromagnetic wave, the resin body is heated and the dye is and fixed. | 01-07-2016 |
20150374228 | OPTICAL COHERENCE TOMOGRAPHY DEVICE, OPTICAL COHERENCE TOMOGRAPHY CALCULATION METHOD, AND OPTICAL COHERENCE TOMOGRAPHY CALCULATION PROGRAM - The present disclosure relates to an optical coherence tomography (OCT) including: an OCT device, an OCT calculation method, and an OCT calculation program, enabling correlation between images to be easily performed; more specifically it relates to a case where a functional OCT image such as a motion contrast is acquired by using the OCT; acquiring the functional OCT image through a calculation process of an OCT signal is a time-consuming process, for this reason, a long time elapses until the point that a functional OCT image can be observed after OCT imaging is completed, and thus this causes stress to a subject and an examiner; the present disclosure provides an OCT device, an OCT calculation method, and an OCT calculation program, enabling a functional OCT image to be rapidly acquired and enables an examiner to easily perform diagnosis. | 12-31-2015 |
20150374227 | OPTICAL COHERENCE TOMOGRAPHY APPARATUS AND DATA PROCESSING PROGRAM - An optical coherence tomography apparatus includes an OCT optical system configured to detect an OCT signal based on measurement light scanned on scan positions of a subject including a blood vessel network by a scanning unit and reference light. The optical coherence tomography apparatus is configured to execute: a signal processing instruction of processing OCT signals which are temporally different from each other with respect to a same position on the subject and generating a motion contrast image which images distribution of a moving object in a depth direction at each of the scan positions based on the OCT signals; and a detecting instruction of analyzing a profile in the depth direction of the motion contrast image generated by the signal processing unit and detecting a change resulting from the blood vessel to detect the blood vessel network included in the subject. | 12-31-2015 |
20150182380 | OPHTHALMIC LASER SURGERY APPARATUS AND PROGRAM OF CREATING CONTROL DATA FOR OPHTHALMIC SURGERY - An ophthalmic laser surgery apparatus for treating an eye of a patient includes: a laser light source configured to emit the pulse laser light; an objective lens configured to condense the pulse laser light emitted from the laser light source on the tissue to cause a photodistuption of the tissue; a scanner configured to scan a condensing position of the pulse laser light condensed by the objective lens; and a controller configured to control the scanner to adjust speed of scanning the condensing position depending on a size of the photodisruption which fluctuates in according to an aberration which fluctuates according to a change in the condensing position. | 07-02-2015 |
20150182111 | OPTICAL TOMOGRAPHIC IMAGE PHOTOGRAPHING APPARATUS AND OPTICAL TOMOGRAPHIC IMAGE PHOTOGRAPHING PROGRAM - An optical tomographic image photographing apparatus for acquiring information on a tissue inside a specimen, the apparatus includes: a synthesis unit configured to generate a interference beam by synthesizing a measuring beam reflected from the tissue and a reference beam; and a detector configured to detect the generated first interference beam as a first interference signal, the first interference beam being detected for each scanning position of the measuring beam. The optical tomographic image photographing apparatus acquires tomographic information for each scanning position of the specimen by using the detected first interference signal and acquiring tomographic image data of the specimen expressed by polar coordinates by using the tomographic information; and converts the tomographic image data of the specimen expressed by the acquired polar coordinates into image data expressed by rectangular coordinates. | 07-02-2015 |
20150150448 | OPHTHALMIC MEASUREMENT APPARATUS AND OPHTHALMIC MEASUREMENT PROGRAM - There is provided an ophthalmic measurement apparatus | 06-04-2015 |
20150103316 | CONTROL METHOD OF A FUNDUS EXAMINATION APPARATUS - A control method of a fundus examination apparatus constructed as a perimeter for examining a fundus of an examinee's eye, includes: controlling a monitor provided in the fundus examination apparatus as the perimeter to display a two-dimensional map pertinent to a two-dimensional analysis result of the fundus based on a tomographic image of the examinee's eye obtained by an optical coherence tomography device; setting an examination position in the fundus examination apparatus as the perimeter on the two-dimensional map displayed on the monitor; and controlling the fundus examination apparatus as the perimeter based on the set examination position to examine the fundus. | 04-16-2015 |
20150094978 | OPTICAL COHERENCE TOMOGRAPHY DEVICE - An optical coherence tomography device includes an SS-OCT optical system which includes a wavelength swept optical source which sweeps an emission wavelength, an optical splitter which splits an interference signal light caused by interference between a measurement light and a reference light into a first interference signal light and a second interference signal light having a phase difference from the first interference signal light, a balance detector which includes a first detector configured to detect the first interference signal light and a second detector configured to detect the second interference signal light, and which processes detection signals from the first and second detectors to perform balance detection, and an optical member which is disposed between the optical splitter and one of the first detector and the second detector to generate a fixed pattern noise by one of the first interference signal light and the second interference signal light. | 04-02-2015 |
20150055089 | OPHTHALMIC PHOTOGRAPHING APPARATUS - An ophthalmic photographing apparatus including an OCT optical system for acquiring an OCT signal of a subject eye; an optical scanner for scanning the subject eye by the measurement light applied to the subject eye; a scan controller for controlling driving of the optical scanner and operate first scan control of respectively performing one scan by measurement light with respect to each of plural scan lines and second scan control of performing plural scans by measurement light with respect to each of the plural scan lines; and an image processor for acquiring the OCT signal in each scan line based on an output signal from the OCT optical system and perform composite processing on a plurality of the OCT signals of each scan line acquired by the second scan control using the OCT signal of each scan line acquired by the first scan control as a template. | 02-26-2015 |
20150051591 | OPHTHALMIC LASER SURGICAL APPARATUS - An ophthalmic laser surgical apparatus includes an XY scan unit, a light guiding optical element, an objective lens, and a Z scan unit. The XY scan unit includes a deflecting device for deflecting the pulsed laser beam, and scans the pulsed laser beam in a direction crossing an optical axis. The light guiding optical element is provided downstream of the deflecting device on the optical path of the pulsed laser beam. The light guiding optical element has refractive power, and guides the pulsed laser beam. The objective lens causes the pulsed laser beam through the XY scan unit and the light guiding optical element to converge in a tissue of a patient's eye. The Z scan unit varies the optical path length between the light guiding optical element and the objective lens while the objective lens is fixed in position on the optical path. | 02-19-2015 |
20140375952 | HAND-HELD OPHTHALMOLOGICAL DEVICE - A hand-held ophthalmological device includes: a main unit having an ophthalmoscopic optical system configured to project ophthalmoscopic light to an examinee's eye and receive reflection light therefrom to examine or measure an examinee's eye; a detector placed in the main unit and configured to detect a relative deviation between an optical axis of the ophthalmoscopic optical system and the examinee's eye; a deviation compensating optical system placed as a part of the ophthalmoscopic optical system and configured to compensate the deviation; and a drive part configured to drive the deviation compensating optical system based on output from the detector. | 12-25-2014 |
20140373368 | EYEGLASS FRAME SHAPE MEASURING APPARATUS - There is provided an eyeglass frame shape measuring apparatus includes an eyeglass frame holding unit which holds an eyeglass frame, and a measuring unit which measures a shape of a rim of the eyeglass frame by tracing a contour of the rim of the eyeglass frame. The measuring unit includes a tracing stylus which is inserted into a groove of the rim, a tracing stylus moving unit which moves the tracing stylus in a radial direction of the rim, and a rotating unit which rotates the tracing stylus moving unit about a first axis set to pass through an inside of the contour of the rim such that the tip of the tracing stylus traces the rim along the contour of the rim, and which is disposed on a rear side of the eyeglass frame held by the eyeglass frame holding unit. | 12-25-2014 |
20140340673 | EYEGLASS LENS MEASURING APPARATUS, METHOD FOR DISTINGUISHING UPPER PORTION FROM LOWER PORTION OF EYEGLASS LENS, AND POINT MARKING ADAPTER - An eyeglass lens measuring apparatus includes a measuring optical system configured to measure optical properties of an eyeglass lens for the right eye and optical properties of an eyeglass lens for the left eye; and a point marking mechanism including a first point marking member configured to provide a first mark point defining an optical center and an astigmatic axis of the eyeglass lens which are acquired by using the measuring optical system, and a second point marking member configured to provide a second mark point defining an upper portion and a lower portion of the eyeglass lens, wherein the point marking mechanism is configured to provide the eyeglass lens for the right eye and the eyeglass lens for the left eye respectively with the second mark points almost the same in position. | 11-20-2014 |
20140333896 | OPHTHALMIC APPARATUS, ANALYSIS PROGRAM, OPTIC MEDIA OPACITY ACQUIRING METHOD, AND FLUORESCENCE INTENSITY ACQUIRING METHOD - An ophthalmic apparatus includes: a light projecting optical system to project light to each point on a fundus of an examinee's eye; a light receiving optical system including a light receiving element to receive light from the fundus emitted from each point on the fundus resulting from the light projected from the light projecting optical system; and a controller for controlling the ophthalmic apparatus, wherein the controller is configured to: acquire intensity information representing intensity of the light from the fundus corresponding to each point on the fundus based on a result of received light of the light receiving element; and analyze a degree of opacity in an optic media of the examinee's eye based on the intensity information. | 11-13-2014 |
20140333895 | OCULAR AXIAL LENGTH MEASUREMENT APPARATUS - An ocular axial length measurement apparatus is provided with: a measurement section for obtaining the ocular axial length of an examinee's eye by using an optical interferometer; a drive mechanism for adjusting the relative positions of the measurement section and the examinee's eye; an operation section operated by an examiner; and a control unit. The ocular axial length measurement apparatus is equipped with an ultrasonic probe for obtaining length information in an axial direction of the examinee's eye in advance, or configured to mount the ultrasonic probe. The control unit, when measuring the eye using the ultrasonic probe, changes a setting at the time of measuring the eye using the ultrasonic probe based on an operation signal output from the operation section. | 11-13-2014 |
20140324031 | LASER TREATMENT APPARATUS - A laser treatment apparatus configured to emit laser light onto a tissue of a patient's eye, the laser treatment apparatus includes: a laser scanner configured to scan laser light emitted from a laser light source and switch a position of the tissue onto which laser light is emitted; a processor; and memory storing computer readable instructions, which are executed by the processor, causing the laser treatment apparatus to: (a) emit the laser light onto a first spot; (b) stop emitting the laser light onto the first spot for a stop time; (c) emit the laser light onto at least one second spot other than the first spot during the stop time; (d) emit the laser light onto the first spot again after the stop time elapses; and repeat (b), (c) and (d) several times to execute intermittent irradiation treatment onto a plurality of spots multiple times. | 10-30-2014 |
20140297016 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes a lens chuck unit that holds an eyeglass lens; a processing unit that has a processing tool to process the eyeglass lens held by the lens chuck unit; and an adjustment unit that adjusts a relative distance between the eyeglass lens and the processing tool. The eyeglass lens processing apparatus operates the processing unit and processes the eyeglass lens by operating the adjustment unit based on processing data. The eyeglass lens processing apparatus includes a check unit that checks whether or not the eyeglass lens is properly processed in a state where the eyeglass lens is held by the lens chuck unit. | 10-02-2014 |
20140294235 | FUNDUS IMAGE PROCESSING APPARATUS, FUNDUS IMAGE PROCESSING METHOD, AND RECORDING MEDIUM - A fundus image processing apparatus that processes a fundus image of an examinee's eye, the fundus image processing apparatus includes: a processor; and a memory storing computer readable instructions, when executed by the processor, causing the fundus image processing apparatus to: identify the optic disc included in the fundus image; identify a blood vessel included in the fundus image; calculate an upper diameter ratio which is a diameter ratio of those of the identified blood vessels that are positioned in a region above a height of the optic disc; calculate a lower diameter ratio which is a diameter ratio of those of the identified blood vessels that are positioned in a region under the height of the optic disc; and calculate an arteriovenous diameter ratio in the fundus of the examinee's eye based on the upper diameter ratio and the lower diameter ratio. | 10-02-2014 |
20140287660 | APPARATUS HAVING CUP ATTACHING UNIT - A system includes: a cup attaching unit configured to attach a cup to a surface of an eyeglass lens; a processing apparatus main body that includes a housing in which a lens processing mechanism with a processing tool configured to process the eyeglass lens held by a lens chuck shaft is arranged; a display which is arranged at the housing and is configured to display an operation step; a signal input unit configured to input a switching signal to switch a screen of the display from a screen for a current operation step to a screen for a next operation step; and a controller configured to control the display to switch displaying the screen of the display from the screen for the current operation step to the screen of the next operation step based on the switching signal input by the signal input unit. | 09-25-2014 |
20140211165 | SUBJECTIVE EYE REFRACTING POWER MEASUREMENT APPARATUS - There is provided a subjective eye refracting power measurement apparatus which measures a refracting power of a subject eye. The apparatus includes a projection optical system which projects a visual target light flux toward the subject eye to form a visual target on a fundus of the subject eye; a correction optical system which changes a refracting power thereof; a relay optical system which relays a light flux passing through the correction optical system and to form an image of the correction optical system in front of the subject eye; a deviation detector which detects a positional deviation of the image of the correction optical system with respect to the subject eye; and a correction unit which optically corrects a formation position of the image based on a detection result by the deviation detector such that the image is formed in front of the subject eye. | 07-31-2014 |
20140211164 | OPTOMETRIC APPARATUS - An optometric apparatus includes an optotype presenting optical system for presenting part of a plurality of optotypes corresponding to visual acuity to be measured to an examinee's eye and a visible light source for irradiating illumination light to the optotypes presented to the eye through the optotype presenting optical system. A controller is configured to execute processing of changing a light amount of the illumination light to be irradiated to the optotypes from the visible light source between a predetermined first light amount and a second light amount lower than the first light amount and processing of switching the optotypes to be presented to the eye at the time of changing the light amount of the illumination light from the first light amount to the second light amount. | 07-31-2014 |
20140205169 | OPHTHALMIC ANALYSIS APPARATUS AND OPHTHALMIC ANALYSIS PROGRAM - There is provided an ophthalmic analysis apparatus configured to acquire an analysis result of a tomographic image of a subject eye which is acquired by using optical coherence tomography (OCT), and to output the analysis result. The apparatus functions as a display control unit configured to control a display unit to display a two-dimensional image based on an OCT tomographic image; an analysis region setting unit configured to set multiple analysis regions on the two-dimensional image displayed on the display unit by the display control unit; and an output control unit configured to acquire an analysis result in the multiple analysis regions set by the analysis region setting unit and to output the acquired analysis result. | 07-24-2014 |
20140204342 | IMAGE PROCESSING APPARATUS - An image processing apparatus configured to process a tomographic image of an object to be examined, includes: a processor; and memory storing computer readable instructions, when executed by the processor, causing the image processing apparatus to: set a reference line, which is used as a reference for setting a cross sectional position, on a front image of the object, the cross sectional position being one of a position where a two-dimensional tomographic image is acquired from three-dimensional data of the object, and a position where measurement light for generating a tomographic image is scanned; and set the cross sectional position having a predetermined angle as an angle relative to the set reference line. | 07-24-2014 |
20140204341 | OPHTHALMIC IMAGING APPARATUS - There is provided an ophthalmic imaging apparatus including an optical coherence tomography (OCT) optical system for acquiring a tomographic image of a subject eye, an observation optical system configured to acquire a front image of the subject eye. The apparatus functions as an image generation unit which repeatedly generates the tomographic image based on an output signal from the OCT optical system, and repeatedly generates the front image based on an output signal from the observation optical system, a determination unit which detects a positional deviation between a reference front image and each of front images generated by the image generation unit, and determines consecutiveness of the front images whose positional deviation satisfies a permissible range, and a selection process unit which selects one of multiple tomographic images generated by the image generation unit, based on a determination result by the determination unit. | 07-24-2014 |
20140204338 | OPHTHALMIC PHOTOGRAPHING APPARATUS AND STORAGE MEDIUM STORING OPHTHALMIC PHOTOGRAPHING PROGRAM - An ophthalmic photographing apparatus includes: an interference optical system configured to acquire a tomographic image of an eye; a processor; and memory storing computer readable instructions, when executed by the processor, causing the ophthalmic photographing apparatus to: control the interference optical system to acquire multiple tomographic images, and store the multiple tomographic images in a storage unit; acquire a composite image based on the multiple tomographic images stored in the storage unit; start a photographing operation for acquiring the multiple tomographic images based on the photographing position; acquire the composite image from the multiple tomographic images which are acquired by the interference optical system and stored in the storage unit until a first operation signal is received during the photographing operation; and transfer a process to a subsequent photographing operation when a second operation signal is received from the operation unit. | 07-24-2014 |
20140199917 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes: a lens rotation unit configured to rotate a lens chuck shaft; a processing tool rotational shaft to which a processing tool is attached; a shaft-to-shaft distance change unit that includes a carriage which holds the lens chuck shaft or the processing tool rotational shaft and is movable in a direction where a shaft-to-shaft distance between the lens chuck shaft and the processing tool rotational shaft changes by driving a motor, a movement member that is moved in the shaft-to-shaft distance direction, a connection member that connects the movement member and the carriage, and a deformation detecting sensor configured to detect a deformation of the connection member; and a controller configured to control the driving of the motor based on a detection result of the deformation detecting sensor. | 07-17-2014 |
20140199916 | EYEGLASS LENS PROCESSING APPARATUS AND PROCESSING CONTROL DATA GENERATING PROGRAM - An eyeglass lens processing apparatus configured to form, on a peripheral edge of a lens, a bevel or a groove for fitting the lens to a frame of an eyeglass, includes: a data calculating unit for calculating data of the bevel or the groove to be formed on the peripheral edge of the lens based on frame shape data of the frame or demonstration lens shape data which is shape data of a demonstration lens having the bevel or the groove fitted to the shape of the frame; and a correction unit for approximating a front-side foot width, which is a width between a position of the bevel or the groove to be formed on the lens and a position of a front edge of the lens, to a target value by correcting the data of the bevel or the groove calculated by the data calculating unit. | 07-17-2014 |
20140185012 | OPTOMETRY APPARATUS - An optometry apparatus includes; a housing accommodating a concave mirror disposed on a reference axis; and a display disposed outside the housing and out of the reference axis for projecting a target light flux onto the concave mirror. The concave mirror is configured to reflect the target light flux output from the display toward an examinee's eye along the reference axis. | 07-03-2014 |
20140118694 | OPHTHALMOLOGIC PHOTOGRAPHING APPARATUS AND OPHTHALMOLOGIC PHOTOGRAPHING METHOD - An ophthalmologic photographing apparatus includes: a photographing optical system including an optical scanner for scanning an examinee's eye with measurement light and a detector for detecting a coherent state of reflected light of the measurement light from the examinee's eye and reference light, the photographing optical system being configured to capture a tomographic image of the examinee's eye in response to an output signal from the detector; a reference data setting unit for setting a photographing condition of a previously acquired captured image as reference data for a follow-up; an image capture data setting unit for setting the reference data set by the reference data setting unit as image capture data for the follow-up; and a tomographic image acquisition controller for acquiring a tomographic image of the examinee's eye by controlling the photographing optical system based on the reference data set as the image capture data. | 05-01-2014 |
20140112562 | OPHTHALMIC ANALYSIS APPARATUS AND OPHTHALMIC ANALYSIS PROGRAM - An ophthalmic analysis apparatus is the ophthalmic analysis apparatus for obtaining analysis results of tomography images of a subject eye acquired at different dates by ophthalmic optical coherence tomography and outputting statistical information formed based on time-series data of the analysis results, and includes instruction receiving means for receiving selection instructions to select an analytical region on a subject eye from an examiner, and control means for respectively acquiring analysis results in the analytical region selected by the instruction receiving means with respect to tomography images acquired at the different dates and outputting the statistical information. | 04-24-2014 |
20140111767 | OPHTHALMOLOGIC PHOTOGRAPHING APPARATUS AND OPHTHALMOLOGIC PHOTOGRAPHING METHOD - An ophthalmologic photographing apparatus includes: an optical coherence system for obtaining a tomographic image of an examinee's eye, having an optical scanner for scanning the eye with measurement light and a detector for detecting an interference signal of the light and reference light; an observing optical system for acquiring a front image of the eye; a scan controller for controlling the optical scanner to scan with the light different transverse positions set on the image, and acquire first interference signals at the positions; a display controller for displaying on a monitor an image created in response to the first interference signal; and an image recapture setting unit for setting a rephotographing transverse position in response to an operation signal from an operating unit for the image on the monitor. The scan controller scans the eye with the light at the rephotographing transverse position, and acquires a second interference signal. | 04-24-2014 |
20140094783 | OPHTHALMIC LASER TREATMENT APPARATUS - An ophthalmic laser treatment apparatus includes: an irradiation optical system including an optical scanner for two-dimensionally scanning spots of a treatment laser beam and an aiming beam on eye tissue; a control unit to control the irradiation optical system to irradiate the treatment beam to a spot position based on an irradiation pattern of spots for treatment beam irradiation and based on an aiming rule associated with the irradiation pattern to irradiate the aiming beam to indicate the treatment beam spot position; and a movement unit to move an irradiation position of each beam. The control unit irradiates the treatment beam to a sequence of spots from a n-th position to a m-th position in association with the irradiation pattern, and then controls the movement unit and irradiates the aiming beam based on the aiming rule to a position different from the spot position just irradiated by the treatment beam. | 04-03-2014 |
20140092361 | NON-CONTACT TYPE TONOMETER - A non-contact type tonometer includes: a measurement unit including a first measuring unit for measuring an eye pressure of an examinee's eye in a non-contact manner and a second measuring unit for measuring a corneal thickness of the examinee's eye in a non-contact manner; a moving mechanism for causing relative movement of the measurement unit with respect to the examinee's eye; a drive controller for driving the moving mechanism for aligning the measurement unit; and a setting switch controller for switching an alignment reference on the cornea used for aligning the measurement unit between first and second alignment references. The first alignment reference is a reference for measuring the eye pressure with the first measuring unit and the second alignment reference is a reference for measuring the corneal thickness with the second measuring unit and set closer to a corneal rear surface than the first alignment reference. | 04-03-2014 |
20140059871 | EYEGLASS FRAME SHAPE MEASURING APPARATUS - An eyeglass frame shape measuring apparatus includes: a frame holding unit holding an eyeglass frame; a tracing stylus inserted into a bevel groove of the rim; a moving unit moving the tracing stylus; and a controller controls the moving unit and obtains measurement data of a shape of the rim. The controller controls the moving unit based on a first measurement operation to perform a first measurement. The controller decides whether the first measurement is performed in a first state in which the tracing stylus is inserted into the bevel groove at the time of starting the first measurement or a second state in which the tracing stylus is not inserted into the bevel groove at the time of starting the first measurement. If the controller decides that it is the second state, the controller performs a second measurement based on a second measurement operation. | 03-06-2014 |
20140016094 | CORNEAL ENDOTHELIAL CELL PHOTOGRAPHING APPARATUS - A corneal endothelial cell photographing apparatus for photographing an endothelial cell in the cornea of the examinee's eye includes an optical system, an image processor, and a display controller. The optical system includes an illuminating optical system for irradiating the cornea with illuminating light, and a light receiving optical system including a light detector and configured to receive reflected light from the cornea including the endothelial cell. The image processor analyzes each of endothelial cell images photographed at different positions on the cornea, and acquires an integrated analysis result by integrating the result of analysis of each of the endothelial cell images. The display controller displays the endothelial cell images simultaneously on a monitor with reference to an endothelial cell image photographed at a central portion of the cornea, and displays the integrated analysis result on the same screen as for the endothelial cell images. | 01-16-2014 |
20140002795 | FUNDUS PHOTOGRAPHING APPARATUS | 01-02-2014 |
20130338649 | OPHTHALMIC LASER SURGICAL APPARATUS - An ophthalmic laser surgical apparatus includes: a laser irradiation optical system configured to irradiate a patient's eye with surgical laser; a fixation unit configured to fix the patient's eye on the laser irradiation optical system; an interface unit including an optical member configured to cover at least the cornea of the patient's eye; a tomography unit configured to capture a tomographic image of the anterior segment of the patient's eye; and a monitoring unit configured to monitor a position of the fixation unit and/or the interface unit with respect to the patient's eye based on the tomographic image captured by the tomography unit. | 12-19-2013 |
20130338648 | OPHTHALMIC LASER SURGICAL APPARATUS - An ophthalmic laser surgical apparatus includes a laser irradiation optical system configured to form a spot of laser light on a patient's eye and move the position of the spot three-dimensionally, a unit configured to obtain a tomographic image of the patient's eye, a unit configured to obtain control information of the laser irradiation optical system, the control information corresponding to a discriminative portion in the tomographic image, a unit configured to determine a surgical site based on the tomographic image, a unit configured to, based on the control information, generate control information of the laser irradiation optical system for irradiating the surgical site with the laser, and a unit configured to control the laser irradiation optical system based on the control information to allow the laser irradiation optical system to apply a predetermined surgical site of the patient's eye with the laser light. | 12-19-2013 |
20130321770 | OPHTHALMOLOGIC PHOTOGRAPHING APPARATUS - An ophthalmologic photographing apparatus includes: an illuminating optical system for irradiating an examinee's eye with illuminating light; an imaging optical system including an imaging device for receiving a reflected light flux from the eye, the imaging optical system having an imaging optical axis inclined with respect to an optical axis of the illuminating optical system; and a first optical member for reducing an imaging incidence angle, the imaging incidence angle being defined as an angle between a normal direction of an imaging surface of the imaging device and a principal ray of the reflected light flux. | 12-05-2013 |
20130286351 | CORNEA SHAPE MEASUREMENT APPARATUS - A cornea shape measurement apparatus includes: a first projecting optical system configured to project a first target on the cornea; a first imaging optical system configured to capture a reflection image of the first target projected on the cornea; a second projecting optical system configured to project a second target different from the first target on the cornea to measure a corneal shape; a second imaging optical system configured to capture a reflection image of the second target projected on the cornea; and a calculation controller configured to adjust the amount of projection light of the second projecting optical system based on the reflection image of the first target, the reflection image having been acquired by the first imaging optical system, and measuring the corneal shape of an examinee's eye based on the reflection image of the second target, the reflection image having been captured by the imaging optical system. | 10-31-2013 |
20130265547 | FUNDUS PHOTOGRAPHING APPARATUS - A fundus photographing apparatus includes a measurement unit including an optical coherence tomography system for obtaining a tomographic image of the fundus of an examinee's eye by detecting an interference state between measurement light from the fundus of the examinee's eye and reference light, a detection unit for detecting an alignment state perceived as a relative positional relationship between the measurement unit and the examinee's eye, and a controller for adjusting the optical coherence tomography system with respect to the fundus of the examinee's eye based on a detection result from the detection unit. The adjustment of the optical coherence tomography system includes at least one of an optical path length adjustment, which adjusts an optical path length difference between the measurement light and the reference light, and a focus adjustment. | 10-10-2013 |
20130261612 | OPHTHALMIC LASER TREATMENT APPARATUS - An ophthalmic laser treatment apparatus includes a light interference optical unit, an irradiation unit, a luminance transition information detecting unit, a focused state detecting unit, and a guide unit. The light interference optical unit is configured to acquire a depth profile of a patient's eye tissue. The luminance transition information detecting unit is configured to control a first focus position adjusting unit to shift a focus position of a measurement light to acquire a depth profile in each focus position. The focused state detecting unit is configured to detect a focused state in the patient's eye tissue based on luminance transition information acquired by the luminance transition information detecting unit. The guide unit is configured to guide a focus position of a laser beam to be adjusted based on a result of detection of the focused state detecting unit. | 10-03-2013 |
20130250237 | OPHTHALMIC PHOTOGRAPHING APPARATUS - A method for obtaining a tomographic image of a fundus by optical coherence tomography includes the steps of setting a line, based on which the fundus tomographic image is to be obtained, on a first front image of the fundus, the first front image being a still image, establishing a positional correspondence between a second front image of the fundus and the first front image by matching the first and second front images, specifying a line on the second front image based on positional information on the line set on the first front image, and the established positional correspondence, and obtaining the fundus tomographic image that corresponds to the lines on the first and second front images by scanning measurement light with the use of an optical scanner provided to an interference optical system. | 09-26-2013 |
20130242258 | FUNDUS PHOTOGRAPHING APPARATUS - A fundus photographing apparatus is provided with: a detector that detects an interference state between light reflected from the fundus and reference light; an optical scanner that scans the fundus of an examinee's eye with the measurement light; a focus detection unit that detects a focus position with respect to the fundus of the examinee's eye based on an output signal from a light receiving element that receives the light reflected from the fundus; a focus adjustment unit that corrects the diopter scale with respect to the examinee fundus by moving a first optical member to the focus position; a second optical member disposed in the optical path of the measurement light or the reference light; and an optical path length adjustment unit that adjusts an optical path length difference between the measurement light and the reference light. | 09-19-2013 |
20130236585 | APPARATUS HAVING CUP ATTACHING UNIT - An apparatus including a cup attaching unit, includes: a lens support portion for supporting a lens on a reference axis extending in a vertical direction; a support arm to which an attaching portion to which the cup is attached is attached; a moving arm for support the support arm to be movable so that the attaching portion can be directed in a downward direction toward the lens support portion and in an upward direction or a forward direction; and a lever configured to be operated by the operation and rotate the support arm so as to direct the attaching portion in from the second direction to the first direction. The lever is provided at the support arm and lowers the attaching portion together with the moving arm after the attaching portion is directed in the downward direction. | 09-12-2013 |
20130232774 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus for processing a periphery of an eyeglass lens includes: a lens chuck shaft configured to chuck the eyeglass lens; a shaft angle changing portion configured to change a shaft angle of the lens chuck shaft; a first processing tool unit including at least one spindle at which a first processing tool is provided; a second processing tool unit that is disposed to oppose the first processing tool unit and that includes at least one spindle at which a second processing tool is provided; and a controller configured to change one of the first and second processing tool unit to be used for processing the eyeglass lens to the other of the first and second processing tool by controlling driving of the shaft angle changing portion to change the shaft angle of the lens chuck shaft. | 09-12-2013 |
20130229623 | OPHTHALMOLOGIC PHOTOGRAPHING APPARATUS - An ophthalmologic photographing apparatus includes: a photographing optical system, including a scanning unit for scanning an examinee's eye with measurement light, for obtaining a tomographic image of the examinee's eye; an observing optical system, including a light-receiving device for receiving reflected light from the examinee's eye, for obtaining a front image of the examinee's eye based on a light receiving signal from the light-receiving device; a condition setting unit for setting conditions for capturing a tomographic image; and a tracking controller for performing tracking that controls the scanning unit in a manner of scanning a predetermined photographing portion of the examinee's eye based on a front image acquired by the observing optical system as well as performing tracking related to substantially the same photographing portion even in a case where the photographing condition is changed by the condition setting unit. | 09-05-2013 |
20130229622 | OPHTHALMOLOGIC PHOTOGRAPHING APPARATUS AND OPHTHALMOLOGIC PHOTOGRAPHING METHOD - An ophthalmologic photographing apparatus includes: a photographing optical system that includes a scanning unit for scanning an examinee's eye with measurement light to obtain a tomographic image of the examinee's eye; an observing optical system that includes a light-receiving device for receiving reflected light from the examinee's eye to obtain a moving image of a front image of the examinee's eye based on a light-receiving signal from the light-receiving device; a display controller for displaying the front image acquired by the observing optical system in a still state on a monitor as well as enabling setting of a capturing position of the tomographic image, the setting using the front image; and a drive controller for controlling the scanning unit to acquire the tomographic image in accordance with the capturing position. | 09-05-2013 |
20130222566 | METHOD FOR TAKING TOMOGRAPHIC IMAGE OF EYE - A method for capturing a tomographic image of an eye includes: obtaining a plurality of tomographic images of an examinee's eye by an optical scanning; obtaining a displacement distribution that is a distribution of a displacement for each A-scan among the plurality of tomographic images; and correcting a displacement among the tomographic images based on the displacement distribution. | 08-29-2013 |
20130218293 | MEDICAL INSTRUMENT - A medical instrument includes a handpiece, a tank portion configured to house a fluid, a suction/discharge unit configured to change a volume or pressure of an inside of the tank portion to suction the fluid into the tank portion or discharge the fluid from the tank portion, and an operating unit providing a member different from the suction/discharge unit and configured to operate the suction/discharge unit. | 08-22-2013 |
20130208968 | METHOD FOR REDUCING NOISE IN TOMOGRAPHIC IMAGE AND RECORDING MEDIUM HAVING NOISE REDUCING PROGRAM STORED THEREIN - A method for reducing noise in a tomographic image, includes: acquiring phase information of a noise component signal, the signal being provided as a signal corresponding to a noise component of the tomographic image and included in a spectrum interference signal output from a detector of a swept source optical coherence tomography device; acquiring a tomographic image in response to a spectrum interference signal with a corrected phase deviation based on the acquired phase information; and reducing the noise component of this tomographic image. | 08-15-2013 |
20130203322 | EYEGLASS LENS PROCESSING APPARATUS - In an eyeglass lens processing apparatus, a roughing tool for roughing a periphery of an eyeglass lens cuts the periphery up to a roughing path without rotating an eyeglass lens in a first stage and the roughing tool moves along the roughing path while rotating the eyeglass lens in a second stage. A calculating unit for obtaining control data of the lens rotating unit at the second stage. The calculating unit obtains a first load torque applied to a lens chuck shaft at every rotation angle of the lens based on condition data, and obtains a rotation speed of the lens at which the first load torque per unit time becomes equal to or lower than a predetermined reference value. | 08-08-2013 |
20130135582 | OPHTHALMIC APPARATUS AND RECORDING MEDIUM HAVING OPHTHALMIC PROGRAM STORED THEREIN - An ophthalmic apparatus includes: an input unit configured to obtain corneal incision information that is information on a corneal incision to be formed on a cornea of an examinee's eye; an imaging device configured to image an examinee's eye image; and a controller. The controller is configured to calculate first wavefront aberration distribution that is wavefront aberration distribution of the cornea before incision on the examinee's eye based on the examinee's eye image, obtain incision aberration information corresponding to the corneal incision information; calculate second wavefront aberration distribution that is wavefront aberration distribution after formation of the incision based on the first wavefront aberration distribution and the incision aberration information, and output guide information that guides an intraocular lens surgery based on the second wavefront aberration distribution. | 05-30-2013 |
20130107208 | INTRAOCULAR LENS POWER DETERMINATION APPARATUS, INTRAOCULAR LENS POWER DETERMINATION METHOD, AND INTRAOCULAR LENS POWER DETERMINATION PROGRAM | 05-02-2013 |
20130085557 | STIMULUS ELECTRODE FOR BIOLOGICAL TISSUE AND METHOD OF PRODUCING THE SAME - A method of producing a stimulus electrode for a biological tissue includes irradiating a surface of an electrode with an ultrashort pulse laser to form a plurality of deformations. | 04-04-2013 |
20130085507 | INTRAOCULAR LENS INJECTION INSTRUMENT - An intraocular lens injection instrument including: an injection part formed with an inner wall for folding the soft IOL and a front end for injecting the IOL folded along the inner wall into an eye; a cylinder body part provided with the injection part at its end portion; a push member for pushing the IOL toward the front end of the injection part, a restriction member attached to the cylinder body part to restrict movement of the IOL which is placed outside the axis; and a release member for releasing the restriction member and pushing the IOL onto the axis, wherein the release member includes a contact portion to be brought into contact with the IOL when the restriction by the restriction member is released, the contact portion having a setting surface to be brought into contact with the IOL placed on the axis. | 04-04-2013 |
20130067754 | EYEGLASS FRAME SHAPE MEASUREMENT DEVICE - An eyeglass frame shape measurement device includes: an eyeglass frame holding unit including a first slider and a second slider for holding an eyeglass frame; a rim measuring unit including a tracing stylus for a rim of the eyeglass frame, and detecting the movement position of the tracing stylus to measure a shape of the rim; a template holder configured to attach a template and a measurement object of a demo lens; a template measuring unit including a tracing stylus shaft configured to contact an edge of the measurement object attached to the template holder, for measuring radius vector information of the measurement object; and a housing portion provided to house the template holder and provided in one of the first slider and the second slider when measurement using the template measuring unit is not being performed. | 03-21-2013 |
20130057826 | FUNDUS PHOTOGRAPHING APPARATUS WITH WAVEFRONT COMPENSATION - A fundus photographing apparatus with wavefront compensation, includes: a fundus photographing optical system for capturing a fundus image by receiving a reflected light from fundus of an examinee's eye; a wavefront compensation device placed in an optical path of the fundus photographing optical system to compensate a wavefront aberration of the examinee's eye by controlling an incident light wavefront; a wavefront aberration detection optical system for projecting a measurement light on the fundus of the examinee's eye to detect a reflected light of the measurement light from the fundus using a wavefront sensor; and a controller for controlling an effective region formed on the wavefront compensation device so as to correct a difference between the effective region formed on the wavefront compensation device where an aberration correction control is effective and a wavefront measurement region of the wavefront aberration detection optical system where the wavefront aberration is measured. | 03-07-2013 |
20130041063 | METHOD OF PREPARING RESIN COMPOSITION FOR HARD COAT AND RESIN COMPOSITION FOR HARD COAT - A method of preparing a resin composition for hard coat, comprises: a first step of obtaining a polyfunctional (meth)acrylate monomer modifying agent by addition reaction between a modifying agent having a thiol group and a three- or more functional (meth)acrylate monomer to form a covalent bond between the thiol group and acryloyl group and/or methacryloyl group, and a second step of modifying metal oxide microparticles with the polyfunctional (meth)acrylate monomer modifying agent that is obtained from the first step. | 02-14-2013 |
20130021577 | ANTERIOR SEGMENT MEASURING APPARATUS - An anterior segment measuring apparatus includes: a light projecting optical system for forming a light section on an anterior segment; a light receiving optical system for obtaining a cross-sectional image of the anterior segment by scattering of the light section at the anterior segment; a displacement detection unit for detecting displacement in a direction orthogonal to the light section between the position where the actual cross-sectional image is acquired and the position of the expected cross-sectional image; and a controller for forming the cross-sectional image of the anterior segment, processing the cross-sectional image to measure the anterior segment, and correcting a measurement result for the anterior segment based on a detection result by the displacement detection unit. | 01-24-2013 |
20120327423 | OPTICAL COHERENCE TOMOGRAPHY APPARATUS - An optical coherence tomography (OCT) apparatus includes: a light source; an OCT optical system including: a first light splitter which splits light emitted from the light source into measurement and reference lights, a second light splitter which splits the measurement light into first and second beams, an optical delay path to generate an optical path length difference between the first and second beams, a scan optical system which scans the respective beams on an object to be examined in a transverse direction, a reference optical system, and a detector which receives a spectrum of composite light in which reflected lights of the first and second beams from the object, and the reference light from the reference optical system are combined; and an arithmetic controller which processes an interference signal output from the detector to obtain first and second tomographic images formed respectively by the first and second beams. | 12-27-2012 |
20120311797 | DYEING METHOD AND DYEING APPARATUS - A dyeing method in which a transparent resin body having a surface applied with a dye is heated to fix the dye to the transparent resin body comprises a heating step of irradiating a laser beam having a wavelength less likely to be absorbed by the dye toward the transparent resin body applied with the dye on the surface while relatively scanning the laser beam with respect to the transparent resin body to heat a to-be-dyed region of the transparent resin body to fix the dye, wherein the laser beam is irradiation to heat by changing a laser beam irradiating condition with respect to a portion of the transparent resin body to be heated so that a heating temperature on the transparent resin body by irradiation of the laser beam is substantially equal throughout an entire area of the to-be-dyed region. | 12-13-2012 |
20120310224 | OPHTHALMIC LASER SURGERY APPARATUS - An ophthalmic laser surgery apparatus for cutting a tissue in a cornea with laser light into a lenticular tissue corresponding to an amount of correction of refractive-error, includes: a pulse laser light source for outputting pulse laser light; an irradiation optical system including a moving optical system for moving a laser spot to which laser light is collected; a setting unit configured to set a cutting line for cutting the lenticular tissue to have a cut tissue by laser light irradiation such that the further cut lenticular tissue has a width equal to or less than a half of a diameter of the lenticular tissue, and that the further cut lenticular tissue is interlinked together without being separated from one another; and a control unit configured to drive the moving optical system based on the set cutting line and to cut a corneal tissue with laser light. | 12-06-2012 |
20120281235 | OPTICAL TOMOGRAPHIC IMAGE PHOTOGRAPHING APPARATUS - An optical tomographic image photographing apparatus includes: an OCT optical system for capturing tomographic images of an object to be examined, the OCT optical system including a light source, a splitter for splitting a light from the light source into a measurement optical path and a reference optical path, an optical scanner , and a detector for detecting a spectrum of light obtained by combining the light of the measurement optical path reflected from the object and the light from the reference optical path; a drive unit to move at least a part of optical components of the OCT optical system in an optical axial direction; a monitor to output at least the tomographic image; and a display controller for displaying the tomographic image and identifying information used to determine whether the tomographic image output to the monitor is a normal image or a reverse image. | 11-08-2012 |
20120281184 | METHOD FOR MONITORING IMAGE OF EXAMINEE'S EYE AND MONITORING SYSTEM - A method for monitoring an image of an examinee's eye includes: obtaining first image data including a first examinee's eye image captured by a first ophthalmologic photographing apparatus, and additional information including type information on the first examinee's eye image; obtaining second image data including a second examinee's eye image captured by a second ophthalmologic photographing apparatus different from the first ophthalmologic photographing apparatus, and additional information including type information on the second examinee's eye image; recognizing the first examinee's eye image and the second examinee's eye image as the same type of images, based on the additional information; and correcting a difference between the first examinee's eye image and the second examinee's eye image. | 11-08-2012 |
20120252315 | EYEGLASS LENS PERIPHERY PROCESSING APPARATUS - An eyeglass lens periphery processing apparatus for processing an eyeglass lens includes: a lens shuck shaft holding the eyeglass lens; a data input unit inputting target lens shape data and layout data of an optical center of the lens with respect to the target lens shape; left and right lens selecting unit inputting a selection signal as to whether the lens held by the lens chuck shaft is a right lens or a left lens; a lens shape detecting unit detecting the lens shape; a confirming unit confirming whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the detecting result of the lens shape detecting unit, the layout data and the selection signal; and a notifying unit notifying the confirming result of the confirming unit. | 10-04-2012 |
20120249958 | CORNEAL ENDOTHELIAL CELL PHOTOGRAPHING APPARATUS - A corneal endothelial cell photographing apparatus comprises: a main unit including: an illumination optical system for illuminating illumination light from an illumination light source toward a cornea of an examinee's eye from an oblique direction; an imaging optical system for obtaining a corneal endothelial cell image by receiving, through an imaging element, reflection light from the cornea including corneal endothelial cells; and a fixation optical system including a plurality of fixation targets and for guiding a fixation direction of the examinee's eye; a drive unit to relatively move the main unit with respect to the examinee's eye; a serial photographing unit to obtain endothelial images in series at different photographing positions in previously set up-and-down and right-and-left directions; and a monitor to display the obtained endothelial image. | 10-04-2012 |
20120249957 | OPHTHALMIC PHOTOGRAPHING APPARATUS - An ophthalmic photographing apparatus includes: a first photographing unit for photographing an examinee's eye to obtain a first photography image of the examinee's eye; a second photographing unit for photographing the examinee's eye in a wider area than a photography view angle of the first photographing unit; a photography area setting unit configured to move a photography area, which is photographed by the first photographing unit, relative to the examinee's eye which is photographed by the second photographing unit; a photography position information acquisition unit configured to acquire photography position information of the first photography image of the examinee's eye from the photography area setting unit; and a storage unit configured to store the first photography image and the photography position information acquired by the photography position information acquisition unit in association with each other. | 10-04-2012 |
20120249951 | OPTOTYPE PRESENTING APPARATUS - An optotype presenting apparatus presents optotypes for testing an examinee's binocular visual function. The apparatus includes: an optotype presenting part to display an optotype at a predetermined presenting region; a pupillary distance input part that inputs a pupillary distance between an examinee's left and right eyes; and a control unit that makes the optotype presenting part display left- and right-eye optotypes for a stereoscopic vision test. The control unit determines a lateral inter-optotype spacing between the left- and the right-eye optotypes based on the input pupillary distance so that a fusion optotype seen with the examinee's both eyes is perceived as an optotype that is seen floating or sinking by a fusion distance between a reference position and a predetermined fusion position, and makes the optotype presenting part display the left-eye optotype and the right-eye optotype based on the determined inter-optotype spacing. | 10-04-2012 |
20120242955 | FUNDUS PHOTOGRAPHING APPARATUS - A fundus photographing apparatus for photographing a fundus of an examinee's eye includes: a photographing part including a photographing optical system for photographing the fundus; a mechanism for moving the photographing part; a presenting part for presenting a fixation target to the eye; an alignment detecting optical system including a light receiving element to detect an alignment state of the photographing part; and a setting part for setting an alignment completion position in a back and forth direction of the photographing part relative to the eye based on the detected alignment state. The alignment completion position includes a first alignment completion position information to be set when an optical axis of the photographing part is in a predetermined range relative to a corneal vertex of the eye and a second alignment completion position information to be set when the optical axis is apart from the predetermined range. | 09-27-2012 |
20120224596 | ULTRASHORT PULSE LASER PROCESSING APPARATUS - An ultrashort pulse laser processing apparatus for processing a processing target includes: a laser head which includes a seed laser source emitting an ultrashort pulse seed laser, and emits a laser pulse; an optical fiber which guides the laser pulse emitted from the laser head; and an emission end unit which includes a compressor that compresses the laser pulse emitted from the optical fiber to a laser pulse of a predetermined high peak power and emits the laser pulse compressed by the compressor to the target. | 09-06-2012 |
20120224141 | FUNDUS PHOTOGRAPHING APPARATUS - A fundus photographing apparatus comprises: an anterior-segment observation optical system arranged to image an anterior-segment illuminated with infrared light to obtain an anterior-segment image; a fundus photographing optical system arranged to image a fundus illuminated with visible light emitted from a light source to obtain a fundus image; a display controller arranged to selectively display the fundus image and the anterior-segment image on a monitor; a photographing switch for inputting a photographing start signal to start photographing using the fundus photographing optical system; and a time informing part arranged to inform an elapsed time after the photographing start signal is input with the photographing switch or an elapsed time after the visible light is emitted from the light source, wherein the display controller displays the elapsed time informed by the time informing part together with the anterior-segment image on the monitor. | 09-06-2012 |
20120209416 | EYEGLASS LENS SUPPLYING SYSTEM - An eyeglass lens supplying system for supplying an eyeglass lens to a plurality of eyeglass lens processing apparatus includes: a plurality of conveyer line units, each of which includes: at least one conveyer line conveying a tray; a tray moving unit separating at least two trays from the conveyer line to move the trays to standby positions, and put the tray on the conveyer line; and a control unit obtaining processing information from a host computer; a carrying-in conveyer line connected to the conveyer line of the conveyer line unit; a carrying-out conveyer line connected to the conveyer line o the conveyer line unit; a main control unit communicating with each of the control units, and determines the processing apparatus to process the lens in the tray on the carrying-in conveyer unit, or determines the conveyer line unit to convey the tray on the carrying-in conveyer unit. | 08-16-2012 |
20120206693 | EYEGLASS LENS PROCESSING SHAPE OBTAINING METHOD - An eyeglass lens processing shape obtaining method for attaching a prescription lens having an edge thicker than an original lens and having refractive power to a rim of an eyeglass frame, in place of the original lens attached to the rim, the method includes: obtaining an outline of the original lens; obtaining an inner boundary of the rim on a surface of the original lens in a state where the original lens is attached to the rim; obtaining an external form processing shape of the prescription lens based on the outline of the lens; and obtaining a step processing shape of the prescription lens based on the inner boundary of the rim. | 08-16-2012 |
20120200824 | OPHTHALMIC PHOTOGRAPHING APPARATUS - An ophthalmic photographing apparatus includes: an interference optical system having a light source, a splitter for splitting light from the light source into measurement light traveling toward an examinee's eye and reference light, and an optical detector for receiving combined light of the measurement light reflected by the examinee's eye and the reference light; an optical scanner arranged in an optical path of the measurement light to scan a photographing region of the examinee's eye with the measurement light; a controller for obtaining a tomographic image of the photographing region by controlling the optical scanner and processing an output signal from the optical detector; and an image processor for obtaining a combined tomographic image by combining a plurality of tomographic images corresponding to a plurality of different incident angles. | 08-09-2012 |
20120197102 | OPHTHALMIC SURGICAL MICROSCOPE - An ophthalmic surgical microscope comprises: an observation optical system for observing a patient's eye during surgery; a corneal shape measuring unit for measuring a corneal shape of the patient's eye placed in a surgical position; and a controller configured to output guide information for guiding a surgery with an intraocular lens based on a measurement result obtained by the corneal shape measuring unit to an output device. | 08-02-2012 |
20120188357 | OPHTHALMIC DEVICE - An ophthalmic device to measure weakness of Zinn's zonule of an examinee's eye having: an illuminating unit arranged to illuminate the examinee's eye including a lens; an imaging unit including an imaging element and arranged to capture an image of an anterior segment illuminated by the illuminating unit; and a determination unit arranged to process the image of the anterior segment captured by the imaging unit after applying a stimulus to guide the lens to move, the determination unit being further configured to obtain positional information of a characteristic point of the lens to detect mobility of the lens relative to the pupil when the lens returns to a pre-stimulus status, and determine the zonular weakness based on the detected mobility. | 07-26-2012 |
20120184857 | OPHTHALMIC LASER TREATMENT APPARATUS - An ophthalmic laser treatment apparatus comprises: a main unit; a laser source; a hand-held cabinet; a laser delivery optical system for irradiating the laser beam in a predetermined irradiation pattern onto tissues of the patient's eye, the laser delivery optical system including: a fiber unit connecting the hand-held cabinet to the main unit; a scanner for deflecting an optical axis of the laser beam; and an image forming optical system for forming an image of the laser beam in the form of a spot on the tissues of the patient's eye; an irradiation pattern setting unit for setting an irradiation pattern of the treatment laser beam; a control unit for controlling drive of the scanner; and a beam combiner provided in the hand-held cabinet to make an observation optical path and an optical path of the laser delivery optical system coincident with each other. | 07-19-2012 |
20120165799 | OPHTHALMIC LASER TREATMENT APPARATUS - An ophthalmic laser treatment apparatus includes an irradiation position obtaining unit arranged to obtain analysis result data based on a tomographic image of a patient's eye captured by an optical coherence tomography device before a treatment laser beam is irradiated, and obtain information of an irradiation position of the treatment laser beam with respect to the eye set by use of the obtained analysis result data, and a laser control unit arranged to irradiate the laser beam to the eye based on the irradiation position information obtained by the irradiation position obtaining unit. | 06-28-2012 |
20120162606 | EYE MEASUREMENT APPARATUS - An eye measurement apparatus includes: a subjective measurement optical system configured to subjectively measure an examinee's eye, the subjective measurement optical system including: a chart to be presented to the examinee's eye; and a glare light source for irradiating the examinee's eye with a glare light; and a control part configured to determine presence or absence of opacity in a light transmitting part of the examinee's eye and, when the presence of opacity is determined, to allow display of necessity for a glare test which is a subjective measurement to be performed in a state that the examinee's eye is irradiated with the glare light. | 06-28-2012 |
20120143287 | LIVING TISSUE STIMULATION APPARATUS - A living tissue stimulation apparatus includes: a power supply unit configured to generate alternating-current power and a control signal; a stimulation unit configured to output an electric stimulation pulse signal through a plurality of electrodes disposed in a living body of a patient based on the alternating-current power and the control signal to stimulate living tissue; a periodic modulation circuit configured to periodically modulate the electric stimulation pulse signal based on the control signal and generates a periodic-modulated wave; and a clock signal generation portion configured to detect a waveform for each period of the periodic-modulated wave and generates a clock signal for operating the stimulation unit. | 06-07-2012 |
20120140172 | FUNDUS PHOTOGRAPHING APPARATUS - An ophthalmic photographing apparatus includes an optical coherence tomography device provided to imaging a tomographic image of an examinee's eye. The device includes: an irradiation position changing unit for changing an irradiation position of measurement light emitted from a light source on the eye to change an imaging position on the eye; and a detector for detecting a interference state between the measurement light reflected from the eye and reference light, and a displacement detecting unit provided to detect displacement in continuity between a tomographic image having already been obtained in a first imaging region and a tomographic image to be obtained in a second imaging region different from the first imaging region. | 06-07-2012 |
20120127428 | OPHTHALMIC PHOTOGRAPHING APPARATUS - An ophthalmic photographing apparatus of the present invention is capable of favorably assisting an examiner when a three-dimensional tomographic image is obtained. The ophthalmic photographing apparatus includes an optical scanner for two-dimensionally scanning light from a measurement light source, a detector for detecting the state of interference of measurement light from the measurement light source and reference light, an optical coherence tomography device for obtaining a three-dimensional tomographic image of an examinee's eye, an observation optical system for obtaining a front observation image of the eye as a moving image, an arithmetic analyzing unit for specifying an abnormal portion by analyzing through image processing the three-dimensional tomographic image, and a display control unit for extracting a tomographic image corresponding to the abnormal portion from the three-dimensional image, and controls a monitor to display at the same time the extracted tomographic image and the moving image of the front observation image. | 05-24-2012 |
20120116483 | LIVING TISSUE STIMULATION CIRCUIT - A living tissue stimulation circuit includes: an H-bridged circuit that includes a first series section in which a first semiconductor switch connected to a power source side and a third semiconductor switch connected to a ground side are connected to each other in series, and a second series section in which a second semiconductor switch connected to the power source side and a fourth semiconductor switch connected to the ground side are connected to each other in series, the first series section and the second series section being connected to each other in parallel; a stimulation electrode connected to a first node between the first and third semiconductor switches; a counter electrode connected to a second node between the second and fourth semiconductor switches; and a current adjusting circuit configured to determine a current value output from the stimulation electrode. | 05-10-2012 |
20120113390 | CONTROL METHOD OF A FUNDUS EXAMINATION APPARATUS - A control method of a fundus examination apparatus configured to examine a fundus of an examinee's eye, includes: processing an examination data obtained by one of fundus examination apparatuses, which are a perimeter configured to measure a visual field and an optical coherence tomography device configured to obtain a tomographic image of the fundus, to thereby obtain positional information relating to an abnormal site of the fundus; setting an examination position on the fundus in the other fundus examination apparatus which is the perimeter or the optical coherence tomography device based on the positional information; and examining the abnormal site of the fundus by controlling the other fundus examination apparatus based on the set examination position. | 05-10-2012 |
20120113389 | FUNDUS PHOTOGRAPHING APPARATUS - A fundus photographing apparatus includes a wavefront detecting optical system having a wavefront sensor for receiving reflection light from a fundus and measuring wavefront aberration of an eye, a wavefront compensating device for compensating the wavefront aberration, and a deviation detecting part for detecting deviation information corresponding to deviation between an effective region in which aberration compensation by the wavefront compensating device is effective, and a wavefront measuring region in which the wavefront aberration is measured by the wavefront detecting optical system, with respect to a direction perpendicular to an optical axial direction. | 05-10-2012 |
20120092622 | OPTOTYPE PRESENTING APPARATUS - An optotype presenting apparatus for presenting an optotype used to test a visual function of an examinee includes: an optotype presentation part configured to present the optotype in a predetermined presentation region; a control unit configured to allow a test optotype to be presented in the optotype presentation part, the test optotype including a stereoscopic vision test optotype that generates a parallax so as to be seen by the examinee as floating or sinking from a predetermined reference plane; and an optotype splitting unit configured to split the test optotype presented in the optotype presentation part into an optotype for a left eye and an optotype for a right eye to present the test optotype to right and left eyes of the examinee, wherein the test optotype includes a guide optotype for guiding the examinee to see the stereoscopic vision test optotype stereoscopically. | 04-19-2012 |
20120092621 | OPTOMETRIC APPARATUS - An optometric apparatus for examining visual functions of an examinee's eye includes: a memory for storing prism powers corresponding to the visual functions of the examinee's eye; an output unit; and a control unit for graphically displaying on the output unit normative areas being areas of normative prism powers in addition to information on prism powers of the examinee's eye based on the prism powers stored in the memory. | 04-19-2012 |
20120086911 | CORNEAL ENDOTHELIAL CELL PHOTOGRAPHING APPARATUS - An apparatus including: a main unit including a system for irradiating illumination light from a light source to a cornea of an eye from an oblique direction and a system for obtaining a corneal endothelial cell image by receiving reflection light from the cornea by a first imaging element; an anterior segment observation optical system including a second imaging element, the anterior segment observation optical system configured to pick up an anterior segment image of the eye by the second imaging element to observe the anterior segment image from front; a controller adapted to turn on the light source and obtain a plurality of picked-up images output from the first imaging element; and a unit adapted to detect an alignment state of the main unit with respect to the eye based on a picked-up image output from the second imaging element during obtaining of the picked-up images by the controller. | 04-12-2012 |
20120083667 | METHOD OF OBSERVING A THREE-DIMENSIONAL IMAGE OF EXAMINEE'S EYE - A method of observing a three-dimensional image of an examinee's eye to be examined, includes: obtaining a first three-dimensional image which is a three-dimensional image of an anterior segment of the examinee's eye by optical coherence tomography for obtaining a tomographic image by converging a measurement light on the anterior segment of the examinee's eye; obtaining a second three-dimensional image which is a three-dimensional image of a fundus of the examinee's eye by optical coherence tomography for obtaining a tomographic image by converging the measurement light on the fundus of the examinee's eye by a timing different from a timing of obtaining the first three-dimensional image; constructing a three-dimensional eyeball image of the examinee's eye through image processing based on the obtained first and second three-dimensional images; and displaying the constructed three-dimensional eyeball image on a monitor. | 04-05-2012 |
20120083186 | EYEGLASS LENS PROCESSING APPARATUS - In an eyeglass lens processing apparatus, if a material selector selects a thermoplastic material for the lens, a control unit performs a first step and then a second step. In the first step, the control unit controls a lens rotating unit to position a lens in a plurality of lens rotation angles and controls an axis-to-axis distance changing unit to cause a roughing tool to cut into the lens up to a roughing path for each of the plurality of lens rotation angles, the lens being not rotated by the lens rotating unit when the roughing tool is cutting into the lens up to the roughing path. In the second step, the control unit controls the lens rotating unit and the axis-to-axis distance changing unit to rough the lens based on the roughing path while the lens rotating unit rotates the lens. | 04-05-2012 |
20120081697 | LENS METER - A lens meter comprises: a measurement optical system including a light source, a measurement target plate, a light receiving sensor, a lens table having an opening where a measurement optical axis of the measurement optical system passes; a frame support member including a frame support plate that contacts a left and right rim of a spectacle frame, and the frame support plate moved toward the lens table by a guide mechanism. The frame support member further including: a cutout portion in the frame support plate that allow the lens, placed on the lens table, to measure a point near an edge of the lens, the edge located on the frame support plate side. A pad contacts and prevents the rim from entering the cutout portion, the pad provided in at least a part of the cutout portion; and a pad moving mechanism to move the pad from the contact surface. | 04-05-2012 |
20120023684 | DYEING METHOD AND DYE DEPOSITION APPARATUS - A dyeing method of dyeing an object to be dyed comprise: a first step of placing a sublimable dye and the object to face each other apart at a predetermined distance under normal pressure and heating the sublimable dye to sublimate the sublimable dye toward the object, the distance between the sublimable dye and the object being determined at 0.1 mm or more but 10 mm or less, the heating using a laser beam to sublimate the sublimable dye so that a deposition region of the sublimable dye is a part of a to-be-dyed region of the object; a second step of applying the sublimable dye over the entire to-be-dyed region of the object by relatively moving the object with respect to a sublimation position of the sublimable dye by use of a moving unit to change over time the deposition region on the object with respect to the sublimable dye sublimated in the first step; and a third step of heating at least a part of the region of the object to which the sublimable dye is stuck in the second step by use of a heating unit to dye the object by fixing the sublimable dye stuck to the part of the region. | 02-02-2012 |
20120019778 | EYE REFRACTIVE POWER MEASUREMENT APPARATUS - An eye refractive power measurement apparatus includes: a measuring optical system for projecting measurement light onto a fundus of an examinee's eye, and causing a two-dimensional imaging device to capture the measurement light to be reflected from the fundus as a plurality of target pattern images at different distances from a measurement optical axis; a light deflecting member arranged at a position out of a conjugate position with a pupil of the examinee's eye on an optical path of the measuring optical system; a rotor for rotating the light deflecting member about an optical axis of the measuring optical system to allow a plurality of pattern light beams to be eccentrically rotated on the pupil; and a calculator for measuring an eye refractive power of the examinee's eye based on a target pattern image to be captured by the two-dimensional imaging device. | 01-26-2012 |
20120013699 | LASER MARKING METHOD - This invention provides a laser marking method that can form a very minute mark of a predetermined shape, such as a letter or pattern, with clarity and high solidity, on the surface of a substrate. The laser marking method of the invention comprises the steps of (1) depositing a coloring material on the surface of a substrate of thermoplastic material to form a thin film of the coloring material, and (2) applying a laser beam to the thin film of the coloring material in conformity with a predetermined marking shape to cause the portions of the substrate irradiated with the laser beam to soften and to cause the thus softened portions to mix with the coloring material, thereby developing the predetermined marking shape on the surface of the substrate. | 01-19-2012 |
20120002167 | OPHTHALMIC APPARATUS - An ophthalmic apparatus includes: a fundus observation optical system for observing a fundus; a target presenting device including a scanning member for two-dimensionally scanning a visible laser beam emitted from a laser source, the device being configured to control emission of the laser source during two-dimensional scanning by the scanning member to project predetermined target on the fundus under observation through the fundus observation optical system; and control means to change an irradiation diameter of the laser beam by inserting/removing an optical member into/from an irradiation optical path of the laser beam or moving the optical member in an axial direction and to change resolution of the target by changing each scan range of the laser beam by the scanning member according to the changed irradiation diameter of the laser beam. Accordingly, in the ophthalmic apparatus used in close and face-to-face position to an examinee, the size and shape of a target to be presented can be easily set. A test target with high resolution unrealizable by a conventional LCD can be presented. | 01-05-2012 |
20120002164 | FUNDUS PHOTOGRAPHING APPARATUS - A fundus photographing apparatus for photographing a fundus of an examinee's eye includes: a fundus photographing optical system for obtaining a fundus image, including: an optical scanner that scans the fundus with measurement light including at least part of light emitted from a light source; and a light detector that receives light including reflected light from the fundus; a length information obtaining unit for obtaining length information on an axial direction of the eye; and a controller that adjusts driving information of the fundus photographing optical system in relation to a photographing range based on the length information obtained by the length information obtaining unit and controls the fundus photographing optical system based on the adjusted driving information to obtain a fundus image corresponding to a photographing range. | 01-05-2012 |
20110304821 | OPHTHALMIC APPARATUS - An ophthalmic apparatus comprising: a fundus observation optical system; a designating part for designating an area of the fundus other than a macular area from a fundus image displayed on a monitor to make alignment of the fundus area of the fundus image displayed on the monitor with the fixation target displayed on a LCD display; a judging part for detecting an approaching state of the fixation target projected on the fundus and the designated fundus area based on positional information of the fundus area designated by the designating part on the monitor after movement and positional information of the fixation target displayed on the LCD display, and judging based on a detection result, whether or not the designated fundus area and the fixation target projected on the fundus are coincident in a predetermined allowable range; and a display control part for changing the display state of the fixation target based on a judgment result of the judging part. | 12-15-2011 |
20110299037 | Ophthalmic photographing apparatus - A method for obtaining a tomographic image of a fundus by optical coherence tomography includes the steps of setting a line, based on which the fundus tomographic image is to be obtained, on a first front image of the fundus, the first front image being a still image, establishing a positional correspondence between a second front image of the fundus and the first front image by matching the first and second front images, specifying a line on the second front image based on positional information on the line set on the first front image, and the established positional correspondence, and obtaining the fundus tomographic image that corresponds to the lines on the first and second front images by scanning measurement light with the use of an optical scanner provided to an interference optical system. | 12-08-2011 |
20110292340 | OPHTHALMIC APPARATUS - An ophthalmic apparatus for guiding positioning an intraocular lens for astigmatism correction, includes: an obtaining unit for obtaining an anterior segment image of a patient's eye and an astigmatic axis of a patient's cornea; a feature point designating unit for defining a feature point of an iris or a sclera on the anterior segment image; and a display control unit for superimposing and displaying a gauge image that models a cornea gauge and an axis that represents the astigmatic axis of the cornea on the anterior segment image. | 12-01-2011 |
20110267582 | OPHTHALMIC APPARATUS - An ophthalmic apparatus includes an imaging optical system for imaging an anterior segment image including a pupil of an examinee's eye, a pupil detection unit for detecting a size of the pupil of the examinee's eye based on the imaged result by the imaging optical system, and an output unit configured to obtain size information of a far vision zone and a near vision zone for a multifocal intraocular lens and output the obtained size information and the size of the pupil detected by the pupil detection unit to be comparable. Accordingly, applicability of the multifocal intraocular lens can be determined accurately and easily. | 11-03-2011 |
20110245817 | OPHTHALMIC LASER TREATMENT APPARATUS - An ophthalmic laser treatment apparatus for treating a patient's eye, including: a binocular microscopic optical system; a treatment laser source; an optical fiber; an irradiation optical system, the irradiation optical system including: a zoom optical system including a zoom lens movable along an optical axis of the irradiation optical system; a scanner; an aperture plate placed on an optical path between the zoom optical system and the scanner, the aperture plate including an aperture; an image forming optical system including an image forming lens; and a reflection mirror placed at a center between right and left optical paths of the binocular microscopic optical system; a controller for controlling driving of the scanner based on an irradiation pattern in which a plurality of the irradiation spots of the treatment beam are arranged. | 10-06-2011 |
20110245816 | OPHTHALMIC LASER TREATMENT APPARATUS - An ophthalmic laser treatment apparatus for treating a patient's eye, comprises: a treatment laser source for emitting a treatment laser beam; an aiming light source for emitting an aiming beam; an irradiation unit including a zoom lens for changing a size of each irradiation spot of the treatment beam and the aiming beam and a scanner for scanning each irradiation spot on a tissue of the patient's eye in two dimensions, the irradiation unit being arranged to irradiate the treatment beam and the aiming beam to the eye; an irradiation pattern setting unit including a switch for inputting a signal to set an irradiation pattern in which a plurality of irradiation spots of the treatment beam is arranged; and a controller for controlling driving of the irradiation unit to control a position of the irradiation spot of the aiming beam based on the set irradiation pattern during aiming before irradiation of the treatment beam, the controller being configured to divide the irradiation spots of the treatment beam in the set irradiation pattern into two or more groups and switch the positions of the irradiation spots of the aiming beam at a predetermined time interval based on the irradiation spots of the treatment beam in each group to irradiate the aiming beam so that the irradiation spots of the aiming beam in a group before switching and the irradiation spots of the aiming beam in another group after switching are not recognized simultaneously by an operator. | 10-06-2011 |
20110245815 | OPHTHALMIC LASER TREATMENT APPARATUS - An ophthalmic laser treatment apparatus for treating a patient's eye by irradiating a treatment laser beam thereto, comprises: an irradiation unit including a treatment laser source, and a scanner for scanning an irradiation spot of the treatment beam from the laser source onto a tissue of the patient's eye in two dimensions; a memory for storing a plurality of predetermined irradiation patterns in each of which a plurality of the irradiation spots of the treatment beam are arranged in a predetermined arrangement; an irradiation pattern selecting unit including a selection switch for inputting a signal to select a desired irradiation pattern from the irradiation patterns stored in the memory; an irradiation pattern changing unit including a change switch for inputting a signal to change a part of the arrangement of the irradiation pattern in which the irradiation spots are arranged on the basis of the selected irradiation pattern by the irradiation pattern selecting unit; and a control unit for controlling driving of the irradiation unit to sequentially irradiate the treatment beam based on the irradiation pattern changed by the irradiation pattern changing unit. | 10-06-2011 |
20110228221 | APPARATUS AND METHOD FOR GENERATING TWO-DIMENSIONAL IMAGE OF OBJECT USING OPTICAL COHERENCE TOMOGRAPHY (OCT) OPTICAL SYSTEM - An apparatus for generating a two-dimensional image of an object using an optical coherence tomography (OCT) optical system, includes: the OCT optical system including: a light source; a splitter for splitting light emitted from the light source into a measurement optical path and a reference optical path; a scanner arranged in the measurement optical path for scanning the object in at least one of XY directions with the split light; and a detector for detecting a spectrum of combined light of the split light from the measurement optical path reflected on the object and the split light from the reference optical path each XY position of the light on the object, and a processor for generating the two-dimensional image of the object in the XY directions by converting the number of zero cross points of an interference signal contained in the spectrum at each XY position into a luminance value. | 09-22-2011 |
20110211160 | OPHTHALMIC APPARATUS - An ophthalmic apparatus comprises: a main unit including a photographing device for photographing an examinee's eye; a monitor provided in the main unit, the monitor including a displaying device for displaying an image of the eye photographed by the photographing device and a setting device for setting a predetermined function; a rotation mechanism for rotating the monitor from an almost vertical position to an almost horizontal position with respect to the main unit; a first lock mechanism for locking the monitor at each predetermined tilt angle, the first lock mechanism being arranged to allow upward rotation of the monitor but restrict downward rotation of the monitor in the course of rotating the monitor from the almost vertical position to the almost horizontal position; and a first unlock mechanism arranged to release the restriction of the downward rotation of the monitor by the first lock mechanism based on further upward rotation of the monitor after the monitor is locked in a first maximum tilt lock position by the first lock mechanism. | 09-01-2011 |
20110205490 | OPTICAL TOMOGRAPHIC IMAGE PHOTOGRAPHING APPARATUS - An aspect of the invention allows for enhancement of the visibility of a tomographic image movie-displayed on a monitor. An optical tomographic image photographing apparatus includes: an interference optical system for combining reflected light with reference light on an object to guide the combined light to a detector; a driving part for moving an optical member in an optical-axis direction in order to adjust an optical path difference between measurement light and the reference light; an image obtaining part for obtaining a tomographic image of the object based on a light receiving signal output from the detector; and a control unit configured to detect positional deviation with respect to a depth direction in the tomographic image and to correct a display position of the tomographic image such that the tomographic image is displayed in a predetermined position within a display region on a monitor. | 08-25-2011 |
20110202109 | VISION REGENERATION ASSISTING APPARATUS - A vision regeneration assisting apparatus for regenerating a patient's vision, includes: a housing; a plurality of needle-like electrodes that are formed at the housing and extend from the housing to a predetermined length, the electrodes being configured to stick into an optic papilla of a patient's eye; and a needle-like fixing portion that is formed at the housing, is separated from the electrodes, is formed so that the fixing portion extends from the housing in the same direction in which the electrodes extend, and is configured to maintain a state where the electrodes are stuck in the optic papilla. | 08-18-2011 |
20110201255 | EYEGLASS LENS PROCESSING DEVICE - An eyeglass lens processing apparatus includes: a marking unit forming a mark on a lens; a mark position detector detecting a position of the mark; a controller performing roughing process and finishing process after the roughing process; and a positional deviation detector detecting a rotational deviation of the lens after the roughing process. The controller obtains a roughing path which allows, even if the lens rotates with respect to the lens chuck shafts by an angle at the time of the roughing process, the controller to perform the finishing process. The controller obtains an area in a process in which the mark and the target lens shape rotate on a chuck center of the lens chuck shafts by the angle, and computes the roughing path based on the area. The controller performs the roughing process based on the roughing path. | 08-18-2011 |
20110176111 | OPHTHALMIC PHOTOGRAPHING APPARATUS - An ophthalmic photographing apparatus includes: an interference optical system including a splitter that splits light, emitted from a measurement light source, into measurement light and reference light, and synthesizing the measurement light reflected on an eye with the reference light to guide the synthesized light to a detector; a driving part that moves an optical member arranged in the optical path to adjust an optical-path difference between the measurement light and the reference light; an image obtaining part that obtains a tomographic image of a fundus or an anterior segment based on a light receiving signal output from the detector; and a driving control unit that controls driving of the driving part to locate the optical member in a predetermined position corresponding to either a photographing mode for photographing the tomographic image of the fundus or a photographing mode for photographing the tomographic image of the anterior segment. | 07-21-2011 |
20110170062 | FUNDUS OBSERVATION APPARATUS - A fundus observation apparatus that is capable of assisting an examiner in judging the presence or absence of abnormality in an examinee's eye based on a fundus tomographic image. The fundus observation apparatus includes an optical coherence tomography device that has an optical scanner for setting an image pickup position on a fundus of an examinee's eye, and is arranged to obtain a tomographic image of the fundus, and an information display unit that is arranged to display on a monitor the tomographic image obtained by the optical coherence tomography device and assisting information for assisting an examiner in performing judgment on the tomographic image, and the information display unit is arranged to change the assisting information based on image pickup information on the tomographic image. | 07-14-2011 |
20110157554 | APPARATUS FOR MEASURING OCULAR AXIAL LENGTH - An object of one aspect of the present invention is to obtain a measurement value in accordance with the condition of a crystalline lens of an examinee's eye. An apparatus for measuring ocular axial length includes: a measuring unit which irradiates measurement waves toward a fundus of the examinee's eye, and calculates the ocular axial length of the examinee's eye based on detection signals obtained from reflected waves including waves reflected from the fundus; and a determining unit which acquires reflection information related to an anterior segment of the examinee's eye, extracts reflection signals corresponding to a reflection object between a cornea and a posterior capsule of a crystalline lens based on the acquired reflection information, and determines whether the examinee's eye is a phakic eye or an IOL eye based on the extracted reflection signals. | 06-30-2011 |
20110131823 | EYEGLASS FRAME SHAPE MEASUREMENT APPARATUS - An apparatus for measuring a shape of an eyeglass frame, includes: a tracing stylus moving unit that includes a tracing stylus detecting a position of a rim of the frame in a moving radius direction and in a vertical direction, a tracing stylus shaft for the tracing stylus, a holding unit configured to vertically-movably hold the tracing stylus shaft, a vertical direction moving unit for moving the holding unit in the vertical direction, and a moving radius direction moving unit for moving the holding unit in the moving radius direction so that the tracing stylus traces the rim; a vertical position detection unit for detecting a position of the tracing stylus in the vertical direction; and a controller for obtaining a next measurement position of the holding unit in the vertical direction based on the detecting result of the vertical position detection unit, and controls the vertical direction moving unit. | 06-09-2011 |
20110131822 | EYEGLASS FRAME SHAPE MEASUREMENT APPARATUS - An apparatus for measuring a shape of an eyeglass frame, includes: a tracing stylus to detect a position of the rim in a moving radius direction and in a vertical, a tracing stylus shaft for the tracing stylus, a holding unit movably holding the tracing stylus shaft and including a pressure applying element for pressing a tip end of the tracing stylus to the rim, a moving unit for moving the holding unit, a rotating unit for rotating the holding unit around an axis along a vertical direction; a moving radius position detection unit configured to detect a position of the tracing stylus; and a controller configured to obtain a rotating angle of the rotating unit and a position of the holding unit in the moving radius direction at a next measurement position, and control the rotating unit and the moving unit. | 06-09-2011 |
20110130807 | VISION REGENERATION ASSIST APPARATUS AND IMPLANTABLE APPARATUS - A vision regeneration assist apparatus includes: a substrate including electrodes; a control unit; a mount that is formed from a sintered element made of an insulating material, the mount including through holes; an internal conductor that is to be filled into the through holes of the mount to electrically connect the control unit with wires extending from the electrodes. The internal conductor includes: a first conductive material which is to be filled to a predetermined depth from an opening of the through holes at the upper surface of the mount, the first conductive material which takes at least one type of conductive material, which is not fused at a sintering temperature of the mount; and a second conductive material which is formed from a conductive material that is to be filled into a remaining of the through holes, which faces the substrate, the second conductive material exhibiting biocompatibility. | 06-02-2011 |
20110128499 | APPARATUS FOR MEASURING DISTANCE BETWEEN EYE TISSUES - An eye distance measurement apparatus according to one aspect of the invention includes an interfering optical system that projects at least one piece of split light toward an examinee's eye, combines the split light, guides the combined light to a light receiving device and moves an optical member in order to adjust an optical path difference between the two pieces of split light, a mode switching unit that issues a mode switching signal for switching between a first measurement mode for moving the optical member at a first scanning rate and a second measurement mode for moving the optical member at a second scanning rate slower than the first scanning rate, and a calculation and control unit that measures an eye distance, based on an output signal of the light receiving device, obtained in the measurement mode corresponding to the mode switching signal. | 06-02-2011 |
20110128498 | EYE REFRACTIVE POWER MEASUREMENT APPARATUS - An eye refractive power measurement apparatus includes a measurement optical system, a calculator and an output unit. The measurement optical system projects measurement light onto a fundus of an examinee's eye, extracts the measurement light reflected on the fundus as ring-shaped light, and causes an imaging device to capture a ring-shaped image. The calculator measures eye refractive power of the examinee's eye, based on the ring-shaped image captured by the imaging device, specifies a position of the ring-shaped image to calculate a measured line of the image, performs approximate processing on the measured line to calculate an approximate curve, and calculates a displacement between the measured line and the approximate curve in a meridian direction for each divided region. The output unit outputs a measurement result of the eye refractive power and a calculation result of the displacement in each divided region. | 06-02-2011 |
20110076923 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus for processing a peripheral edge of an eyeglass lens, includes: a processing unit including a plurality of processing tools that process the peripheral edge of the eyeglass lens held by a lens chuck shaft; a calibrating lens; a mode selector that selects a calibration mode; a memory that stores calibration processing data for processing the calibrating lens to a predetermined shape; a detecting unit that includes a tracing stylus that contacts a surface of the calibrating lens which is processed by the processing unit based on the calibration processing data to detect the shape of the processed calibrating lens in the calibration mode; and a calculating unit that obtain calibration data by comparing a detected result by the detecting unit with the calibration processing data in the calibration mode. | 03-31-2011 |
20110075099 | OPTOMETRIC APPARATUS - An optometric apparatus for a subjective binocular visual performance test includes right and left test units including right and left housings, a plurality of optical elements disposed in the right and left housings, right and left test windows provided to the housings, in which desired optical elements selected from the optical elements are to be placed and through the selected optical elements, an optotype is presented to examinee's right and left eyes by an optotype presenting apparatus, right and left polarization plates having polarization axes perpendicular to each other and arranged to be placed in the test windows, and right and left protective covers arranged to be placed in the test windows at a side facing the optotype presenting apparatus and having polarization optical characteristics of changing circularly polarized light that passes through the right and left protective covers into linearly polarized light having polarization axes perpendicular to each other. | 03-31-2011 |
20110075098 | CORNEA SHAPE MEASUREMENT APPARATUS - A cornea shape measurement apparatus outputs data useful for prescription as well as injection and installation of a TORIC-IOL. This apparatus includes: a projecting optical system projecting an index for measurement onto a cornea; an illuminating optical system illuminating an anterior segment on which a reference mark is placed; an imaging optical system capturing an anterior segment image containing the reference mark and an image of the index reflected from the cornea; an image processor overlaying an astigmatic axis mark indicating a direction of an astigmatic axis of the cornea, which is calculated based on the index image, on the anterior segment image; and a controller displaying the anterior segment image, which contains the astigmatic axis mark, on a display. | 03-31-2011 |
20110075097 | EYE REFRACTIVE POWER MEASUREMENT APPARATUS - An eye refractive power measurement apparatus measures both eye refractive powers in cases where a pupil is small and large in diameter with ease. This apparatus includes: a measuring optical system causing an imaging device to capture a ring-shaped image based on measurement light reflected from a fundus of an examinee's eye; a light deflecting member arranged at a position, which is not conjugated with a pupil of the examinee's eye, on an optical path of the measuring optical system; a rotor causing the light deflecting member to rotate about an optical axis of the measuring optical system; and an eccentricity amount changer changing an amount of eccentricity of the measurement light, which is rotated eccentrically on a surface of the pupil, with respect to a center of the pupil, in order to change a region, where the measurement light passes, on the surface of the pupil. | 03-31-2011 |
20110074439 | EYEGLASS LENS PROCESSING APPARATUS AND CALIBRATION SENSOR UNIT - An eyeglass lens processing apparatus includes lens chuck shafts, processing tools for processing a lens and processing tool rotating shafts to which the processing tools are attached. A calibration sensor unit for calibrating the eyeglass lens processing apparatus includes: an attachment portion attached to the lens chuck shafts; a contact member contacting the processing tools; a support mechanism configured to movably support the contact member and has an urging member that urges the contact member in a direction separating from the attachment portion; and a sensor that detects the contact of the contact member with the processing tools. The urging member has an urging force by which the processing tool rotating shafts and the lens chuck shafts are not bent to a predetermined tolerance or more when the contact member contacts the processing tools and is moved toward the attachment portion. | 03-31-2011 |
20110018175 | DYEING METHOD AND DYEING APPARATUS - Disclosed is a dyeing method using a laser beam. The method can dye transparent resins such as plastic lens well. Also disclosed is a dyeing apparatus. The dyeing method comprises heating a plastic lens having a dye-coated surface to fix the dye on the surface of the plastic lens. The method comprises the step of applying a laser beam with a wavelength, which is less likely to be absorbed in the dye but it absorbed in the plastic lens, onto the surface of the plastic lens through the dye. | 01-27-2011 |
20110009036 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus is provided with: a lens chuck shaft that holds an eyeglass lens; and a beveling tool for forming a bevel on the periphery of the lens. The beveling tool includes a first processing part for forming a rear bevel on the lens rear side; and a second processing part for forming a bevel foot coupled to the rear bevel. In the second processing part, the distance from a line parallel to the lens chuck shafts and passing through a point of border with the first processing part gradually increases from the point of border as the starting point to the endpoint of the second processing surface and the increase rate of the distance gradually increases at least in two steps toward the endpoint. | 01-13-2011 |
20110001929 | Fundus photographing apparatus - A fundus photographing apparatus has an optical system including a movable focusing lens and photographing a fundus, an optical system photo-receiving by a first image pickup element a target from an alignment target projection optical system and detect an alignment state of the photographing optical system with respect to an eye based on a result by the first element, a detection optical system photo-receiving by a second image pickup element a target from a focus target projection optical system and detect a focus state adjusted by moving the lens based on a photo-receiving result by the second element, a unit controlling a light source to successively emit flash light at predetermined intervals in a predetermined period to perform fluorescent photographing, and a unit controlling movement of the photographing optical system with respect to the eye based on a result by the alignment detection optical system during the predetermined period. | 01-06-2011 |
20100324406 | NON-CONTACT ULTRASONIC TONOMETER - A non-contact ultrasonic tonometer comprises: a ultrasonic transducer that transmits an ultrasonic pulse wave to an examinee's eye and receives the ultrasonic pulse wave reflected from the eye in a non-contact manner; a transmission unit that transmits a drive signal to the ultrasonic transducer to cause the ultrasonic transducer to repeat transmission of the ultrasonic pulse wave K times at a constant interval 1/T in order to transmit a burst wave to the eye, where “T” is a burst frequency and “K” is a burst wave number that is the number of cycles of pulse wave; and an arithmetic unit that determines intraocular pressure (IOP) based on an output signal from the ultrasonic transducer when the ultrasonic transducer receives the burst wave reflected from the eye. | 12-23-2010 |
20100315590 | Ophthalmic photographing apparatus - To provide an ophthalmic photographing apparatus capable of checking a measurement (photographing) position of a tomographic (cross-sectional) image of a fundus on a front (surface) image of the fundus. | 12-16-2010 |
20100312087 | NON-CONTACT ULTRASOUND MEASUREMENT DEVICE - A non-contact ultrasound measurement device comprises: a first unit including an ultrasound transducer adapted to transmit and receives an ultrasonic wave in a non-contact manner with respect to an object to be examined, the first unit being adapted to process an output signal from the transducer and measure a first characteristic of the object; and a second unit including at least one of an observation unit for observing the object from front in a non-contact manner and a measurement unit for measuring a second characteristic of the object from front in a non-contact manner, wherein the transducer comprises: an aperture being provided in the central part of the transducer and having a sufficient size to be utilized for observation or measurement of the object by the second unit, and a transmitting and receiving part of the ultrasonic wave being provided to surround the aperture. | 12-09-2010 |
20100311310 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus comprising a processing control unit which performs polishing by controlling a lens rotating unit, a grindstone rotating unit and an axis-to-axis distance varying unit based on an input target lens shape so as to process a periphery of a lens, which has been finished, by a lens margin allowed for polishing by the polishing grindstone. The processing control unit controls the lens rotating unit, the grindstone rotating unit and the axis-to-axis distance varying unit based on a lens rotating speed V | 12-09-2010 |
20100308488 | METHOD OF PRODUCING A DYED OPTICAL COMPONENT - A method of producing a dyed optical component, comprises: a first step of dyeing one surface of a film made of transparent resin to produce a dyed film; and a second step of setting the dyed film in a predetermined mold and injecting the thermoplastic resin melted by heat into the mold in which the dyed film has been set to produce a dyed optical component integrally including the dyed film by film insert molding, the dyed film being set in the mold to make a dyed surface of the dyed film contact with the melted thermoplastic resin. | 12-09-2010 |
20100302508 | Ophthalmic photographing apparatus - An ophthalmic photographing apparatus including an interference optical system for dividing light from a first light source into measurement light and reference light, directing measurement light to a fundus and reference light to a reference optical system, and photo-receiving by a first photodetector interference light, a first optical scanner disposed in a measurement light optical path and scanning measurement light in two dimensional directions, a driving unit moving an optical member in an optical path of measurement light or reference light to change an optical path length, a control unit controlling the driving unit to adjust an optical path length difference, controlling the optical scanner to scan measurement light at a given photographing view angle, and obtaining a tomographic image based on a photodetector signal, and a calculation unit converting a photographing range into an actual distance based on optical member positional information and view angle information. | 12-02-2010 |
20100249569 | Non-contact ultrasonic tonometer - A non-contact ultrasonic tonometer for measuring an intraocular pressure of an examinee's eye in non-contact manner by use of an ultrasonic wave, comprises: an ultrasonic transducer including a transmitter which emits an ultrasonic transmission pulse wave to the eye and a receiver which detects an ultrasonic reflection pulse wave from the eye, the transducer being arranged to be placed in a position apart from the eye and to transmit and receive the pulse wave with respect to the eye through the medium of air; and a calculation part being arranged to obtain a peak amplitude level of the reflection pulse wave based on an output signal from the ultrasonic transducer and measure the intraocular pressure based on the obtained peak amplitude level. | 09-30-2010 |
20100248590 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes: a processing chamber; a pair of lens chuck shafts which chucks an eyeglass lens; a lens rotating unit including a motor for rotating the lens chuck shafts; a processing tool which processes a periphery of the lens; an axis-to-axis distance changing unit for changing an axis-to-axis distance between a rotating shaft attached to the processing tool and the lens chuck shafts; a data input unit for inputting processing condition data including a target lens shape; a processing controller which controls the lens rotating unit and the axis-to-axis changing unit to process the lens based on the input processing condition data a camera which is disposed in the processing chamber and takes a video picture of the processing of the lens; and a memory which stores video pictures and the processing condition data. | 09-30-2010 |
20100247253 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes: a mode selector for selecting an auxiliary lens processing mode; an eyeglass data input unit for inputting a first target lens shape of the eyeglass lens and a right target lens shape-to-left target lens shape distance; a first hole data input unit for inputting a position of a first hole, to which a first magnet is attached; a determination unit which determines second target lens shape of the auxiliary lens, a position of a second hole to which a second magnet is attached, positions of third holes to which a bridge is attached; and a processing controller which processes the auxiliary lenses based on the second target lens shape data, and drills the auxiliary lenses based on the second and third hole positions in the auxiliary lens processing mode. | 09-30-2010 |
20100222842 | SIGHT REGENERATION ASSISTING DEVICE - A sight regeneration assisting device for regenerating the sight of a patient comprises a plurality of needlelike electrodes each having a pointed distal end and being to be inserted in an optic papilla of a patient's eye in use; and a signal generator connected with the electrodes through a conductive wire to generate an electric stimulus pulse signal to be outputted from the electrodes, each of the electrodes, excepting a predetermined portion including the distal end, being coated with a coating layer made of resin exhibiting good biocompatibility and insulation, and the coating layer being formed with a turn-back retaining portion for retaining the electrode. | 09-02-2010 |
20100220287 | OPHTHALMIC IMAGING APPARATUS - An ophthalmic imaging apparatus comprises: a laser emitter that includes an ultrashort pulse light source and emits a laser beam with a tunable wavelength in a predetermined visible wavelength range; an irradiation optical system that includes a scanner for scanning the laser beam two-dimensionally and irradiates the laser beam emitted from the laser emitter to a predetermined portion of an examinee's eye; a light receiving optical system including an apertured plate placed in a substantially conjugate position of a focal point of the laser beam on the predetermined portion and a light receiving element for receiving the laser beam reflected by the predetermined portion and passed through the apertured plate; a controller that controls the laser emitter to continuously change a central wavelength of the laser beam in a predetermined visible wavelength range and controls the scanner in association with the wavelength change of the laser beam to two-dimensionally change an irradiation position of the laser beam; a memory that stores a light reception signal of the light receiving element associated with the wavelength change of the laser beam and the irradiation position change of the laser beam; and a display, the controller being adapted to display an image of the predetermined portion on the display based on the light reception signal stored in the memory. | 09-02-2010 |
20100198299 | BIOLOGICAL IMPLANTABLE FUNCTIONAL DEVICE AND VISION REGENERATION ASSISTING APPARATUS - A biological implantable functional device comprises: a casing having a space for accommodating an electronic device and formed with an opening; a bendable flexible wiring substrate in which a wiring is formed in a predetermined pattern so as to correspond to an device-side terminal of the electronic device; a casing inner connecting terminal to be connected to an electric substrate provided outside the casing; and a bump to be electrically connected with the flexible wiring substrate and the casing inner connecting terminal; and a cover for sealing the opening of the casing to hermetically seal the electronic device. | 08-05-2010 |
20100197198 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes: a lens rotation unit rotating a lens; a processing tool rotation unit processing the lens; an axis-to-axis distance changing unit for changing an axis-to-axis distance between the chuck shaft and the processing tool rotation shaft; a lens surface configuration acquiring unit which acquires a front surface curve configuration and a rear surface curve configuration of the lens; a lens outer diameter acquiring unit which acquires an outer diameter of a lens; a calculation unit which calculates a thickness of the lens and calculates a cutting depth of the lens, so that torque applied onto the chuck shaft in rough processing becomes substantially constant, based on the calculated lens thickness and a processing distance from the rotation center of the lens; and a control unit which controls the axis-to-axis distance changing unit in accordance with the calculated cutting depth and for rough processing the lens. | 08-05-2010 |
20100174273 | Ophthalmic laser treatment apparatus - An ophthalmic laser treatment apparatus for irradiating a laser beam to a patient's eye, comprises: a delivery optical system for forming the laser beam emitted from a laser source into a plurality of spots on a target surface, the delivery optical system including: a diffraction optical element for dividing the laser beam incident thereon into a plurality of diffraction beams in a predetermined spot pattern; a first zoom optical system placed on a side closer to the laser source than the diffraction optical element, the first zoom optical system being configured to change a spot size without changing a spot interval on the target surface; and an objective lens. | 07-08-2010 |
20100168762 | Ophthalmic surgery support device - An ophthalmic surgery support device assisting an operator in the operation of a surgical instrument in order to position to a fine location in an eye the tip end of the surgical instrument to be inserted into the eye through a wound opening opened in the eyeball of a patient, comprising a moving mechanism for holding the surgical instrument so as to be movable in the longitudinal direction of the surgical instrument to be inserted into the eye or in the Z-axis direction, a tilting mechanism for holding the moving mechanism so that the surgical instrument can be tilted in an arbitrary direction about a specified point that is to be positioned to the wound opening and positioned on the Z-axis, and a tilt fixing mechanism for fixing the tilt of the surgical instrument by the tilting mechanism, wherein the tilting mechanism has a rough-motion tilting mechanism, a fine-motion tilting mechanism finer in tilting range than the rough-motion tilting mechanism, a tilt switching mechanism for switching the tilt of the surgical instrument by the rough-motion tilting mechanism to that by the fine-motion tilting mechanism, and a resistance imparting means for imparting resistance for damping the tilting operation of the surgical instrument by the fine-motion tilting mechanism than that by the rough-motion tilting mechanism. | 07-01-2010 |
20100157249 | Vision tester - A subjective vision tester includes a pair of right and left lens chamber units ( | 06-24-2010 |
20100136885 | EYEGLASS LENS PROCESSING APPARATUS FOR PROCESSING PERIPHERY OF EYEGLASS LENS AND EYELGASS LENS PROCESSING METHOD - An eyeglass lens processing apparatus including a lens edge position detecting unit for obtaining edge positions, an edge corner processing tool for processing an edge corner of the lens, a correction data input unit for inputting correction data to avoid interference between an edge and a nose pad arm, wherein the correction data includes data on a position of interference between the nose pad arm and the edge, data necessary for setting an amount of processing at an interference position, and an edge processing range, a processing data computing unit for determining a path of processing the edge corner, based on edge position data and the correction data, to obtain data on correction processing and a processing controller for processing the edge corner of the lens by the edge corner processing tool in accordance with the correction processing data. | 06-03-2010 |
20100129771 | METHOD FOR PRODUCTION OF TOOTH, AND TOOTH PRODUCED BY THE METHOD - Disclosed is a method for producing a tooth, which comprises the steps of: positioning a first cell mass substantially comprising either one of amniotic mesenchymal cells or epithelial cells, and a second cell mass substantially comprising the other one in the inside of a support carrier while keeping them in close contact with each other without being mixed together; and culturing the first and second cell masses in the inside of the support carrier. | 05-27-2010 |
20100110172 | Ophthalmic photographing apparatus - An ophthalmic photographing apparatus having a photographing unit having an optical system having a first light source and dividing light into measurement light and reference light, guiding reference light to an optical system and measurement light to an optical system scanning an eye portion, and combining reference and measurement light into interference light, and making interference light enter a photodetector to obtain a tomographic image, a unit having an optical system having a second light source and illuminating with illumination light, and an optical system making illumination light enter a photo-detector, and obtaining a front image, a unit controlling the photographing unit to scan an X-Y scanning region and obtain 3D image information, a unit obtaining a front image based on accumulation information in a depth direction or image information on a surface portion, and comparing the images to detect a positional deviation, and means displaying deviation information. | 05-06-2010 |
20100110171 | Ophthalmic photographing apparatus - An ophthalmic photographing apparatus having a photographing unit having a projection optical system having a light source and a scanner changing a reflection direction of light and scanning an eye portion in X,Y-directions with measurement light, and an optical system having photodetectors and making the reflected light enter the photodetectors, a unit controlling the photographing unit to scan the given portion plural times in a scanning region and obtain image information pieces based on a photodetector signal, and a unit dividing the region in the X,Y-directions of each information into regions and obtain information on deviation between the image information pieces for each divided region, obtain image information for each divided region, in which deviation has been corrected, with reference to one of the image information pieces based on the deviation information, add and average the image information pieces for each corresponding divided region to obtain image information. | 05-06-2010 |
20100069737 | Non-Contact ultrasonic tonometer - A non-contact ultrasonic tonometer for measuring intraocular pressure of an examinee's eye in a non-contact manner by use of an ultrasonic wave comprises: a probe that emits an ultrasonic beam to be allowed to enter the eye and detects the ultrasonic beam reflected by the eye; and an arithmetic section that determines the intraocular pressure by processing an output signal from the probe, the probe including a broadband air-coupled transducer that transmits and receives the ultrasonic beam having a broadband frequency component. | 03-18-2010 |
20100057059 | CORNEAL SURGERY APPARATUS - A corneal surgery apparatus which comprises a laser irradiation optical system and an eye position change detection unit comprising an illumination optical system and an image pick-up camera picking up an anterior-segment image of a patient's eye and detecting the change in eye position based on an iris pattern in the image, and is arranged such that an irradiation position tracks movement of the eye to ablate a cornea, wherein the apparatus further comprises a contrast adjustment unit extracting a pupil portion and an iris portion based on luminance information of the image, and increasing/decreasing a set value of an illumination light amount and/or a set value of a gain of the camera to increase a contrast of the pupil portion to the iris portion and/or a contrast of the iris pattern within a range that luminance at the iris portion is not saturated. | 03-04-2010 |
20100014089 | Optical tomographic image photographing apparatus - An apparatus has an optical system detecting spectral information and having an optical scanner and a driving unit changing the optical path length by moving an optical member, a monitor, a control unit obtaining a tomographic image by performing Fourier analysis on the information and displaying the obtained image, and a unit previously setting an image on the monitor, in which the member is moved from an initial position and presence or absence of the tomographic image is determined, when the presence is detected, whether the tomographic image is normal or inverted is determined, and when the tomographic image is not the set image, the member is moved to obtain the set image, and when the tomographic image is the set image, the member is moved so that a position of the tomographic image in the depth direction coincides with a predetermined adjustment position and the driving unit is stopped. | 01-21-2010 |
20100007848 | Optical tomographic image photographing apparatus - An apparatus has an optical system detecting spectral information and having an optical scanner and a driving unit changing the optical path length by moving an optical member, a monitor, and a unit controlling the driving unit, obtaining a tomographic image by performing Fourier analysis on the information and displaying the obtained image, in which a front surface of an examined object is positioned on the back side of a depth position where optical path lengths of measurement light and reference light become equal to obtain a normal image of the tomographic image, the front surface of the examined object is positioned on the front side of the depth position to obtain an inverted image of the tomographic image, and at least one of dispersion correction processing corresponding to the information and image combining processing is performed on both normal and inverted images, and the images are displayed. | 01-14-2010 |
20090303439 | Ophthalmic apparatus - An ophthalmic apparatus has an optical system for presenting a target to an examinee's eye through a lens, an optical system placed in an optical path of the target presenting optical system, for correcting a refractive error of the eye seeing the target, a switching unit arranged to switch an aperture size of a diaphragm, which is placed in a position substantially conjugate with a pupil with respect to the lens, between a first size corresponding to a pupil size of the eye in photopic vision and a second size larger than the pupil size in scotopic vision, an inputting unit arranged to generate a signal for switching the aperture size between the first and second sizes, and a control unit arranged to control driving of the switching unit based on the signal from the inputting unit to switch the aperture size between the first and second sizes. | 12-10-2009 |
20090303438 | Ophthalmic photographing apparatus - An ophthalmic photographing apparatus comprising a photographing optical system for obtaining a regional image of an examinee's eye, comprising a light source, a focusing optical element movable in an optical-axis direction by a driving mechanism, and a photodetector, and a control unit controlling driving of the mechanism and obtain the image based on a signal from the photodetector, wherein the control unit further moves the optical element in predetermined steps/continuously to obtain the image at each position, calculates frequency distribution of luminance of each of the images to detect a change characteristic of luminance values having frequencies equal or exceeding a threshold value in the frequency distribution with respect to the optical element position, and detects a focus position of the optical element based on the change characteristics to move the optical element to a position corresponding to the detected focus position. | 12-10-2009 |
20090290122 | Vision Testing System - A subjective vision testing system is used for visual function tests for examinees. The subjective vision testing system is provided with an optometric apparatus which selectively sets optical elements in front of both eyes of an examinee, an optotype presenting apparatus for displaying optotypes to the examinee, and a controller. The optotype presenting apparatus, based on a command signal for implementation of a binocular balance test, displays optotypes used for binocular balance tests. The optometric apparatus, based on a command signal for implementation of a binocular balance test, sets a first prism in front of the examinee's right eye and a second prism in front of the examinee's left eye. The second prism has a base direction vertically opposite to the first prism and the same prism power as the first prism. | 11-26-2009 |
20090281552 | Apparatus for selecting an intraocular lens and a method of selecting the intraocular lens - An intraocular lens selection apparatus and an intraocular lens selection method for selecting an intraocular lens to be implanted into an examinee's eye. The apparatus has an input unit which inputs corneal wavefront aberration of the eye, a memory which stores wavefront aberrations of a plurality of intraocular lens models, an unit which sets, as a target value, desired post-operative residual wavefront aberration of the eye after the lens is implanted, an unit which calculates, as an estimated value, post-operative residual wavefront aberration of the eye to be obtained when each lens model is implanted, based on the inputted corneal wavefront aberration and the stored wavefront aberration of each lens model, and specifies one of the lens models which renders the estimated value close to the set target value, a monitor, and a display control unit which controls the monitor to display information of the specified lens model. | 11-12-2009 |
20090275820 | Non-contact ultrasonic tonometer - A non-contact ultrasonic tonometer for measuring intraocular pressure of an examinee's eye in non-contact manner by use of an ultrasonic wave comprises: a probe including a vibrator for making the ultrasonic wave incident on the eye and a sensor for detecting the ultrasonic wave reflected from the eye; a detection unit which detects an alignment state of the probe with respect to the eye; a determination unit which determines whether the alignment state is proper or not based on a detection result of the detection unit; a trigger signal generation unit which generates a trigger signal to start measurement based on a determination result of the determination unit; and a control unit which controls the probe to emit the ultrasonic wave based on generation of the trigger signal. | 11-05-2009 |
20090275819 | Non-contact ultrasonic tonometer - A non-contact ultrasonic tonometer for measuring intraocular pressure of an examinee's eye, in non-contact manner by use of an ultrasonic wave comprises: a probe including a vibrator for making the ultrasonic wave incident on the examinee's eye and a sensor for detecting the ultrasonic wave reflected from the examinee's eye; and an observation optical system for observing an anterior segment of the eye, wherein the probe is placed in an optical path of the observation optical system, and the observation optical system forms an image of the anterior segment through a surrounding region of the probe. | 11-05-2009 |
20090247996 | Laser treatment apparatus - A laser treatment apparatus for irradiating a laser beam to a patient's eye, comprises: a plurality of laser sources which emit treatment laser beams having different wavelengths, each laser source being held in a main body to be mountable and demountable and connected to a power source through a connector; a light delivery optical system having a mirror for making the laser beams from the laser sources coaxial with each other to deliver each laser beam to the patient's eye; an input unit for inputting mounting information of each laser source; a control unit which checks a predetermined operation of each laser source by a sensor at the time of activation to determine whether an abnormality is present or not in each laser source, and displays an indication that the abnormality is present on a display, wherein the control unit will not perform the operation check whether the abnormality is present or not in the laser source or laser sources unmounted in the main body, based on the mounting information input by the input unit. | 10-01-2009 |
20090247051 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes: an edge position detector which detects front and rear edge positions of an eyeglass lens based on target lens shape data; a bevel locus setting unit which includes: a) a provisional bevel locus calculator which obtains a provisional bevel locus by obtaining a bevel curve substantially equal to a frame curve; b) a nose-side bevel position determining unit which determines a corrected bevel apex position at a nose-side edge position; c) an ear-side bevel position determining unit which determines a corrected bevel apex position at an ear-side edge position; and d) a corrected bevel locus calculator which obtains a corrected bevel locus which has a curve value equal to the bevel curve; and a processing controller which obtains beveling information based on the corrected bevel locus and controls an operation of the apparatus according to the beveling data. | 10-01-2009 |
20090244486 | Optotype presenting apparatus - An optotype presenting apparatus capable of presenting an optotype having a high degree of flexibility to an examinee's eye while a production cost of the apparatus is curbed comprises a main body comprising an optotype forming unit comprising first and second displays displaying optotypes, and a beam combiner combining optical paths of the displays, the optotype forming unit adjusting, if optotype light bundles have polarizing axes, the axes, and providing, if optotype light bundles have no polarizing axis, polarizing axes to the bundles, whereby the bundles form optotypes having the perpendicular polarizing axes, and a projection optical system for projecting the light bundles onto the eye at a test distance, an optotype selecting unit, and a display control unit controlling the displays to display binocular-vision-test optotypes if they are selected, and controlling one of the displays to display a visual-acuity-test optotype if it is selected. | 10-01-2009 |
20090244483 | FUNDUS CAMERA - A fundus camera favorably performing focusing on a fundus of an examinee's eye without a black dot plate in a target projection optical system comprises an illumination optical system comprising a light source and an objective lens, a photographing optical system comprising a focusing lens movable in the optical axis direction and a diopter correction lens to correct a diopter of severe ametropia, a first moving mechanism comprising a first driving unit moving the focusing lens, a focus detection optical system comprising a projection optical system comprising a light source and a photo-receiving optical system comprising a photodetector, a second moving mechanism comprising a second driving unit moving a part of the detection optical system including at least one of the projection light source and the photodetector in the optical axis direction, a monitor, and a control unit controlling the second unit in conjunction with movement of the focusing lens. | 10-01-2009 |
20090216106 | Non-contact tonometer - A tonometer for measuring intraocular pressure of an examinee's eye in a non-contact manner, comprises: an arithmetic part for calculating the intraocular pressure; a fluid blowing unit for blowing a fluid at a cornea of the examinee's eye through a nozzle; a projecting optical system for projecting light onto an anterior segment of the examinee's eye through the nozzle, the system including a light source and a condensing lens; and an imaging optical system for imaging a cross-sectional image of the anterior segment, the system including an imaging lens and an imaging elements. The imaging optical system is placed so that extended planes of a cross section of the light projected onto the anterior segment by the projecting optical system, a principal plane of the imaging lens, and an imaging plane of the imaging element intersect one another on one axis, and the projecting optical system includes a light restriction unit that allows the light from the light source to pass through inside of the nozzle but not to pass through outside of the nozzle. | 08-27-2009 |
20090213327 | Vision Test Pattern Indicator - A vision test pattern indicator is provided with a color display for displaying optotypes used for binocular vision tests which are conducted with a red filter set in front of an eye of an examinee and a green filter set in front of the other eye, and an arithmetic control part which controls the color display as a first optotype figure is displayed in a green color, a second optotype figure is displayed in a red color, a third optotype figure for fusion stimulus is displayed in a color excluding red and green components and a background of the optotypes is displayed in a white color. | 08-27-2009 |
20090195750 | Ophthalmic apparatus - An ophthalmic apparatus capable of alignment in total automation and manual alignment with an examinee's eye comprising an ophthalmic examination unit, a unit detecting an alignment state of the examination unit with the eye, a main base, a mobile base on which the examination unit is mounted and moved horizontally on the main base through operation of a control member, driving mechanisms moving the examination unit vertically and horizontally with respect to the mobile base, means switching a mode between a manual mode of performing alignment of the examination unit with each eye in sequence through the operation and a fully automatic mode of performing the alignment through driving of the driving mechanisms, and a control unit controlling the driving based on the detection result which starts in the fully automatic mode the driving based on a predetermined trigger signal so as to perform the alignment. | 08-06-2009 |
20090185136 | EYE REFRACTIVE POWER MEASUREMENT APPARATUS - An eye refractive power measurement apparatus for objectively measuring eye refractive power of a patient's eye, includes: a light-projecting optical system that includes a light source and projects measurement light onto a fundus of the patient's eye; a light-receiving optical system that includes an imager device serving as a two-dimensional light-receiving element and receives the measurement light reflected from the fundus; and an operating section that determines the eye refractive power of the eye based on a two-dimensional pattern image by the measurement light imaged by the imager device. The light source is a super-luminescent diode or a laser diode that emits light having a center wavelength in a range of approximately 850 nm to 940 nm. | 07-23-2009 |
20090180073 | Fundus camera - A fundus camera capable of favorably photographing a fundus of an examinee's eye comprises a fundus photographing optical system comprising a visible light source which emits illumination light onto the fundus, a focusing lens movable in an optical axis direction thereof, and a fundus image pickup element, an optical system comprising a first photodetector, for detecting a focus state of the photographing optical system with respect to the fundus, a blink sensor which comprises a second photodetector and detects a blink of the eye based on a photo-receiving signal from the second photodetector, and a control unit arranged to suspend photographing upon input of a predetermined signal until the blink is detected by the sensor, and control the light source to emit the light when a predetermined period of time has passed since the blink is detected by the sensor in order to execute the photographing. | 07-16-2009 |
20090176442 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes a processing control unit ( | 07-09-2009 |
20090170403 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes: a setting unit which sets points on an edge of a lens, where a line on a target lens shape and passing through the first and second points intersects a line on the target lens shape and passing through the third and fourth points; and a calculating unit which: obtains a first plane including a bisection point between the first and second points and perpendicular to the first line; obtains a second plane including a bisection point between the third and fourth points and perpendicular to the second line; obtains an intersection line of the first and second planes; obtains a bevel spherical surface so that a center of the bevel spherical surface is located on the intersection line and passes through a desired edge position; and obtains the bevel path on the basis of the bevel spherical surface and target lens shape data. | 07-02-2009 |
20090142993 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes: a processing tool which processes a peripheral edge of the lens and includes a roughing tool, a beveling tool and a bevel-modifying tool; a selection unit which is used to select a high curve beveling mode for forming a bevel in the lens fitted into a high curve frame having a protrusion portion; a modifying portion data input unit inputs data of a portion to be modified so as to prevent an interference between the lens and the protrusion portion; a calculation unit which obtains bevel-modifying data on the basis of a bevel path and data of the modifying portion; and a processing control portion which performs the beveling to the lens by the beveling tool in accordance with the beveling data, and removes a part of the bevel shoulder and/or the bevel slope by the bevel-modifying tool in accordance with the bevel-modifying data. | 06-04-2009 |
20090128778 | Ophthalmic Apparatus - To provide an ophthalmic apparatus capable of performing efficient measurement of a plurality of eye characteristics of an examinee's eye, which comprises a first measurement unit comprising a first measurement system for performing measurement of a first characteristic of the eye, a second measurement unit comprising a second measurement system for performing measurement of a second characteristic of the eye, a measurement unit in which the measurement units are placed such that heights of first and second measurement axes of the respective systems are different from each other, a movement mechanism unit moving the measurement unit in a vertical direction, and a control unit controlling the mechanism unit such that the height of the first measurement axis at the time of first measurement by the first measurement unit becomes almost the same as that of the second measurement axis at the time of second measurement by the second measurement unit. | 05-21-2009 |
20090115964 | Ophthalmic Photographing Apparatus - To provide an ophthalmic photographing apparatus capable of checking a measurement (photographing) position of a tomographic (cross-sectional) image of a fundus on a front (surface) image of the fundus. | 05-07-2009 |
20090086166 | Optotype presenting apparatus - An optotype presenting apparatus, by which red and green optotypes can be visually perceived independently by right and left eyes even if red filters and/or green filters have different wavelength transmission characteristics, comprises a color display, a unit having a switch for selecting a test chart including visual acuity and red-green binocular visual performance test charts, wherein the binocular test chart includes the optotypes and is used in the test performed with the filters in front of the eyes, a memory storing color adjustment data in which at least one of color tones of the optotypes is varied with the characteristic of one of the filters, a unit for inputting a signal for selecting one of the data, and a unit controlling the display to display the selected chart and adjusting the tones by reading the selected data from the memory when the binocular test chart is selected. | 04-02-2009 |
20090086164 | Fundus imaging apparatus - A fundus imaging apparatus comprises: an irradiation optical system comprising a light source which emits a laser beam and a scanner which two-dimensionally scans the laser beam on a fundus of an examinee's eye, the irradiation optical system being adapted to focus the laser beam emitted from the light source on the fundus to form a confocal region; an imaging optical system comprising a photo-receiving element which receives reflection light of the laser beam reflected from the fundus, the imaging optical system being adapted to focus the reflection light from the fundus and receive the reflection light by the photo-receiving element; and a beam restriction member placed in an optical path of the imaging optical system, the beam restriction member comprising: one of an opening through which part of the reflection light from the fundus outside the confocal region is allowed to pass toward the photo-receiving element and a mirror part which reflects the part of the reflection light from the fundus outside the confocal region toward the photo-receiving element; and a light shielding part which shields the reflection light from the fundus in the confocal region and the part of the reflection light from the fundus outside the confocal region. The light shielding part includes a first light shielding part placed in a conjugate position with a focus point of the laser beam on the fundus and a second light shielding part placed in a nearly conjugate position with the fundus and adapted to shield part of an optical path of the reflection light, the second light shielding part is formed around the first light shielding part. | 04-02-2009 |
20090079939 | Electric joystick mechanism for an ophthalmic apparatus - An electric joystick mechanism for an ophthalmic apparatus which is capable of improving manipulation performance of a joystick and is simple in structure comprises a base, a joystick having a shaft, a driving unit having a motor for moving an ophthalmic examination unit horizontally, and a control unit for controlling the driving unit in response to tilting manipulation of the joystick by an examiner, wherein the control unit performs first control of finely moving the examination unit by controlling the driving unit based on a manipulation signal of the joystick, and second control of roughly moving the examination unit by controlling the driving unit when tilting condition of the joystick becomes a predetermined tilting condition, and in the second control, velocity of driving of the driving unit is controlled based on velocity of the tilting manipulation of the joystick in the first control. | 03-26-2009 |
20090064512 | EYEGLASS LENS MEASUREMENT APPARATUS - An eyeglass lens measurement apparatus includes: a measurement unit which includes a tracing stylus to be inserted into a groove of a rim of an eyeglass frame, a moving mechanism for moving the tracing stylus along the groove of the rim, and a detector for detecting movement of the tracing stylus, and obtains three-dimensional shape of the rim based on a detected result by the detector; and a holding unit which includes upper and lower sliders for positioning the frame, left and right clamp pins for clamping the rim and left and right contact portion to be contacted with the rim which is clamped by the clamp pins, and holds the frame fixedly. The left and right clamp pins and the contact portions protrude from each of the upper and lower sliders. Each of the contact portions is formed at the periphery of each of the lamp pins. | 03-12-2009 |
20090059169 | Eye refractive power measurement apparatus - An eye refractive power measurement apparatus capable of performing analysis of an examinee's eye for irregular astigmatism with accuracy comprises a measurement optical system comprising an optical system projecting measurement light onto an examinee's fundus and an optical system photo-receiving the measurement light as a ring or substantially-ring fundus reflection image, a light deflection member placed in the optical systems, a unit rotating the deflection member, a memory storing the photo-received image as a measurement image, an analysis unit performing analysis of the measurement image, and an output unit, wherein the analysis unit detects the number of images or a width of an image in each meridian direction in the measurement image and judges the eye has irregular astigmatism when a portion in which the number of the images is two or a portion in which the width of the image goes beyond a predetermined level is detected. | 03-05-2009 |
20090036040 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes: a processing chamber for processing the lens; a grinding water supply unit which includes a first switch unit for turning on/off a supply of grinding water to a first nozzle for ejecting grinding water toward a processing point of the lens; a cleaning water supply unit which includes a second switch unit for turning on/off a supply of cleaning water to a second nozzle for ejecting cleaning water for cleaning processing refuse of the lens scattered in the processing chamber. According to a selection signal indicating a material of the lens being plastic, the control unit controls the first switch unit to turn on the supply of the grinding water in whole processing processes, and controls the second switch unit to turn off the supply of the cleaning water in the whole processing processes. | 02-05-2009 |
20090036025 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus includes:
| 02-05-2009 |
20090033869 | Ophthalmic ultrasonic measurement apparatus, and an ophthalmic measurement method - An ophthalmic ultrasonic measurement apparatus capable of narrowing differences in measurement results obtained by the apparatus which are made because of differences among examiners who operate the apparatus comprises an ultrasonic probe arranged to be brought into contact with a cornea of an examinee's eye, a calculation unit arranged to obtain a measured value of a length from the cornea to a given section inside the eye based on an echo from the eye by an ultrasonic wave which is emitted from the probe, and a memory arranged to store information on examiners and adjustment information for narrowing differences in measured values of the length which are made because of differences among the examiners while the adjustment information is associated with the examiners' information, wherein the calculation unit corrects the obtained measured value using the stored adjustment information. | 02-05-2009 |
20090021725 | Lens Meter - A lens meter for measuring optical characteristics of a lens to be measured includes a measurement optical system including a light source which projects a measurement light beam to the lens and a light receiving sensor which receives the measurement light beam having passed through the lens; an arithmetic part which obtains optical characteristic distribution of a predetermined measurement region of the lens based on a light reception result of the light receiving sensor; near-vision-portion determination means which determines whether a near vision portion of the lens is present in the measurement region based on the optical characteristic distribution in the measurement region; and detection means which detects presence of a non-optical region in addition to an optical region of the lens in the measurement region based on the light reception result of the light receiving sensor; the arithmetic part obtains additional power of the lens based on the optical characteristic distribution of the optical region in the measurement region when the near-vision-portion determination means does not determine the presence of the near vision portion in the measurement region and the detection means detects the presence of the non-optical region in the measurement region. | 01-22-2009 |
20090011687 | EYEGLASS LENS PROCESSING APPARATUS - In an eyeglass lens processing apparatus for beveling a peripheral edge of an eyeglass lens, if the high curve lens processing mode is selected by the mode selector, a computing unit acquires a high curve bevel path for locating the bevel apex on a front surface curve of the eyeglass lens or for locating the bevel apex at a position shifted by a predetermined quantity from the front surface curve toward the rear side on the basis of the edge position information acquired by the edge position detector, thereby providing high curve beveling data for the rear surface beveling grindstone, or for the front surface and rear surface beveling grindstones; and a beveling controller bevels the peripheral edge of the eyeglass lens by the rear surface beveling grindstone, or by the front surface and rear surface beveling grindstones on the basis of the high curve beveling data. | 01-08-2009 |
20090007444 | EYEGLASS FRAME SHAPE MEASURING APPARATUS - An eyeglass frame shape measuring apparatus comprises: a frame holding unit which holds a eyeglass frame in a desired position; a rotary base; a feeler holding unit which comprises a support shaft to which a feeler for measurement is attached, a first arm for holding the support shaft, an elastic body for urging the first arm so that the support shaft is urged outward with respect to a rotation center axis of the rotary base, and a first arm holding unit for holding the first arm to enable the support shaft to be inclined with respect to the rotation center axis; a detecting unit which detects movement of the first arm; and an arithmetic unit which obtains a three-dimensional movement position of the feeler to obtain the three-dimensional shape of the rim, on the basis of rotation of the rotary base and results of detection of the detecting unit. | 01-08-2009 |
20080316428 | Optotype presenting apparatus - An optotype presenting apparatus capable of performing a test with accuracy by minimizing differences in manners an optotype is seen by examinees which result from differences in height of eyes among the examinees comprising a display unit comprising pixels having color filters arranged in a longitudinal direction, a polarization optical member comprising first and second optical regions in the form of a longitudinal line corresponding to the arrangement of the pixels which are alternately arranged in a lateral direction, the regions converting light from the display unit into light having polarizing axes perpendicular to each other, an optotype selecting unit, and a display control unit controlling the pixels corresponding to the first regions to display first optotypes of the optotype to be presented to a right or left eye, and controls the pixels corresponding to the second regions to display second optotypes thereof to be presented to the other eye. | 12-25-2008 |
20080316426 | Fundus camera - A fundus camera having a function of measuring a retinal function, capable of picking up (obtaining) a sharp color image of a fundus suitable for a fundus examination and measuring a retinal function with high accuracy comprises an illumination optical system comprising a visible light source, an image-pickup optical system comprising an image-pickup element, a mode selection switch for performing switching between a fundus photographing mode and a retinal function measurement mode based on variance of an intrinsic signal of a retina made by retinal stimulation, and a control unit which controls the optical systems, wherein the unit lowers, when the retinal function measurement mode is selected, illumination intensity of the illumination optical system per unit time in illuminating the fundus than that in picking up the color fundus image, and controls the element to pick up first and second visible fundus images at different points in time. | 12-25-2008 |
20080297776 | Cup attaching apparatus - A cup attaching apparatus for attaching a cup as a processing jig to an eyeglass lens, comprises: an illumination optical system comprising an illumination light source and arranged to illuminate the lens from a side of a front surface of the lens by illumination light from the light source; an imaging optical system comprising an imaging device and a retroreflection member placed on an opposite side from the light source with respect to the lens, the imaging optical system being adapted such that the retroreflection member returns the illumination light passing through the lens back to its incoming direction, and the imaging device receives the returned illumination light, and the imaging optical system being adjusted to focus on a point near a surface of the lens; an image processing device adapted to process an image signal from -the- imaging device to detect at least one of a mark point provided on a unifocal lens, a small lens portion of a bifocal lens, and a progressive mark provided on a progressive focal lens and obtain a position of the detected one; and an arithmetic control device adapted to determine an attaching position of the cup based on the position obtained by the image processing device. | 12-04-2008 |
20080297725 | Ophthalmic Apparatus - To provide an ophthalmic apparatus by which an examiner can provide assistance such as lifting an examinee's eyelid while easily observing an observation image of an examinee's eye displayed on a monitor. The ophthalmic apparatus has a measurement part including a measurement optical system for examining or measuring the examinee's eye, a fixed support part which supports the measurement part to be movable, an observation optical system provided in the measurement part and having an image-pickup element, for observing an anterior segment of the eye, a monitor which displays an image of the anterior segment picked up by the element, and a holding unit which holds the monitor to be movable with respect to the measurement part or the fixed support part to change a placement position of the monitor between a first position where its screen is approximately vertical and a second position where the screen is approximately horizontal. | 12-04-2008 |
20080297724 | Ophthalmic apparatus and a method to determine power of an intraocular lens - An ophthalmic apparatus capable of obtaining characteristics of a cornea which are suitable for calculating power of an intraocular lens to be injected into an examinee's eye which has undergone refractive surgery comprises an input unit which inputs data on a shape of the cornea after refractive surgery, and a calculation unit having a program which calculates post-operative corneal refractive power based on the post-operative corneal shape, wherein the program determines a non-corrected region based on the post-operative corneal shape, estimates a pre-operative corneal shape in a corrected region by calculating an approximate curve from a corneal shape in the non-corrected region, calculates pre-operative corneal refractive power based on the pre-operative corneal shape, calculates correction refractive power in the refractive surgery based on the post-operative corneal shape and the pre-operative corneal shape, and calculates post-operative corneal refractive power based on the pre-operative corneal refractive power and the correction refractive power. | 12-04-2008 |
20080297722 | Ophthalmic apparatus - An ophthalmic apparatus capable of performing alignment of the apparatus with respect to an examinee's eye with ease regardless of characteristics of the eye or an environment of the apparatus includes a measurement unit performing examination/measurement of the eye, a projection optical system for projecting an alignment target onto an anterior segment of the eye, an image-pickup optical system for picking up an anterior-segment image with an image of the projected target by a two-dimensional image-pickup element, and a calculation and control unit detecting the target image, and based on the detection result, detecting an alignment condition of the measurement unit with the eye, wherein the calculation and control unit detects two-dimensional luminance distribution in an image obtained by the element, and based on the detection result, changes projection light intensity of light of the target and/or gain of the element so that the target image becomes detectable. | 12-04-2008 |
20080291433 | Lens Meter - The present invention has an object to provides a lens meter which readily enables alignment of a progressive lens even by an inexperienced examiner. A lens meter of the present invention comprises a lens meter for measuring optical characteristics of a target lens to be measured, comprising: a measurement optical system including a light source which projects a measurement light beam to the target lens and a light receiving sensor which receives the measurement light beam having passed through the target lens; an arithmetic part which obtains the optical characteristics of the target lens based on a received result by the light receiving snsor; mode selecting means which selects between a single focal lens measurement mode and a progressive lens measurement mode; detecting means which detects a direction and a degree of displacement of a current measurement position from a near vision portion of a progressive lens which is the target lens based on the optical characteristics obtained at a plurality of positions when the progressive lens measurement mode is selected and alignment is made to bring the measurement position into the near vision portion; a display which displays an alignment screen; and a display control part which causes the display, based on a detection result by the detection means, to display a guide mark indicatin a direction in which and an amount by which the lens must be moved to bring the measurement position into the near vision portion. | 11-27-2008 |
20080276386 | Lens dyeing method and lens dyeing apparatus - A method of dyeing a lens, comprises the steps of: (a) applying a dyeing ink containing a sublimable dye onto a base material to produce a dyeing base body; (b) placing the dyeing base body and the lens so that a dye-applied surface of the dyeing base body and a surface of the lens to be dyed face each other in noncontact relation, and heating the dyeing base body under substantially a vacuum condition to sublimate and deposit the applied dye on the lens; and (c) heating the dye deposited surface of the lens by irradiation of infrared rays from one direction to fix the deposited dye on the lens. | 11-13-2008 |
20080259278 | Visual acuity testing apparatus - A visual acuity testing apparatus capable of performing visual acuity testing under substantially uniform conditions even when a test distance and an installation distance vary has a projection optical unit including a disk whereon a chart is placed, an illumination light source, and variable projection lenses which are moved so as to change an image-forming position and an image size of an image of the chart, an input unit into which an installation distance between the screen and the visual acuity testing apparatus and a test distance between the screen and an examinee are inputted, a projection lens driving unit which moves the variable projection lenses based on the installation distance and the test distance, and a light intensity adjusting unit which adjusts light intensity based on the installation distance and the test distance so that brightness of the chart image falls within a predetermined reference range. | 10-23-2008 |
20080259277 | Optotype presenting apparatus - An optotype presenting apparatus of a display type with which a polarization red-green test with accuracy can be performed has a display, a polarization optical member including first and second optical regions changing light from the display into light having perpendicular polarizing axes, a selector, regions where optotypes for left and right eyes are to be presented, and a controller, wherein, when a polarization red-green test chart is selected with the selector, the controller controls the display to display a left-eye polarization red-green optotype in pixel regions corresponding to the first regions within the left-optotype-presenting region and display pixel regions in white corresponding to the second regions within the left-optotype-presenting region, while the controller controls to display a right-eye polarization red-green optotype in pixel regions corresponding to the second regions within the right-optotype-presenting region and display pixel regions in white corresponding to the first regions within the right-optotype-presenting region. | 10-23-2008 |
20080248722 | EYEGLASS LENS PROCESSING APPARATUS - In an eyeglass lens processing apparatus for beveling a peripheral edge of an eyeglass lens, if the high curve lens processing mode is selected by a mode selector, a computing unit acquires a high curve bevel path for locating the bevel apex on a front surface curve of the eyeglass lens or for locating the bevel apex at a position shifted by a predetermined quantity from the front surface curve toward the rear side on the basis of the edge position information acquired by the edge position detector, thereby providing high curve beveling data for the rear surface beveling grindstone, or for the front surface and rear surface beveling grindstones; and a beveling controller bevels the peripheral edge of the eyeglass lens by the rear surface beveling grindstone, or by the front surface and rear surface beveling grindstones on the basis of the high curve beveling data. | 10-09-2008 |
20080248721 | EYEGLASS LENS PROCESSING APPARATUS - An eyeglass lens processing apparatus comprising: | 10-09-2008 |
20080248720 | EYEGLASS LENS PROCESSING APPARATUS AND LENS FIXING CUP - In a two-step processing mode in which a cup for attaching a lens to a chuck axis is changed from a large diameter cup to a small diameter cup on the way of processing, a roughing path data computing unit for computing first roughing path data larger than the target lens shape data by a predetermined finishing margin, and second roughing path data having a radius vector larger by at least Δa than at least radius vector data of the large diameter cup; and a processing controller for roughing the peripheral edge of the lens based on the second roughing path data in response to a processing start signal, thereafter stopping the processing and further resuming the processing. The processing controller performs, when a processing resuming signal is inputted, processing control of either roughing and finishing, or finishing without roughing. | 10-09-2008 |
20080243108 | Ophthalmic laser treatment apparatus - An ophthalmic laser treatment apparatus comprises: a laser source that emits a laser beam for treatment of an affected part of a patient's eye; an optical fiber that transmits the laser beam emitted from the laser source; and a delivery optical system that irradiates the laser beam emitted from the optical fiber to the affected part of the patient's eye, the delivery optical system including: a plurality of diffraction optical elements each being configured to shape a beam profile of the laser beam at an emission end face of the optical fiber into a beam profile having one of a uniform intensity and a lower intensity in the center than on the periphery on the affected part and also to shape the laser beam to have a different spot size on the affected part of the patient's eye; and a changing unit which selectively disposing one of the diffraction optical elements on an optical path. | 10-02-2008 |
20080239700 | Cup attaching apparatus - A cup attaching apparatus for attaching a cup serving as a machining jig on a surface of a lens comprises: a white LED which is an illumination light source for illuminating the lens placed on a lens supporting member; a screen applied with an alignment mark, on which screen an image of the lens illuminated by illumination light from the white LED is projected; a movement device which moves the cup set in an arm toward the lens along a reference axis for cup attachment, the position of the reference axis being associated with the alignment mark; and a light intensity increasing and decreasing device which increases and decreases light intensity of the white LED in response to an operation signal from an operation member to be operated by an operator, the operation member being placed on a front of a housing of the apparatus. | 10-02-2008 |
20080239239 | Ophthalmic apparatus - An ophthalmic apparatus capable of observing an examinee's eye even during switching of measurement modes comprises a first measurement unit, a second measurement unit, an up-and-down movement mechanism, a display device, mode switching means which generates a mode switching signal for switching between a first measurement mode and a second measurement mode, and a control unit which drives and controls the up-and-down movement mechanism to change a state in which a first center axis and the eye are placed at substantially a same height into a state in which a second center axis and the eye are placed at substantially a same height by moving a main body of the apparatus, and controls to display the image outputted from a first image-pickup element and the image outputted from a second image-pickup element simultaneously on the display device during a shift from the first measurement mode to the second measurement mode. | 10-02-2008 |
20080225226 | Scanning laser ophthalmoscope - A scanning laser ophthalmoscope comprises: a laser source that emits a laser beam; an irradiation optical system that scans the laser beam over a fundus two-dimensionally; a photoreceptor optical system that receives reflection from the fundus by using a photoreceptor element; an image processor that obtains an image of the fundus based on an output signal from the photoreceptor element; a monitor; and a controller that causes the monitor to display the obtained fundus image, wherein the image processor comprises a subtractive processing circuit that performs time-subtractive processing on the output signal from the photoreceptor element in a state where the output signal is input as an analog signal, and forms the fundus image based on the signal subjected to the subtractive processing. | 09-18-2008 |
20080218690 | EYEGLASS LENS PROCESSING METHOD - An eyeglass lens processing method for processing a hole for attaching a rimless frame to an eyeglass lens, the method includes: selecting a pattern used for a processing from a plurality of hole patterns; selecting a first drilling in which an angle of the processed hole is normal at least to a lens surface of a demo lens or a second drilling in which the angle of the processed hole is normal to a lens surface of the eyeglass lens; and when the first drilling is selected, (a) inputting a surface curve of the demo lens, (b) inputting hole position data of the demo lens for the selected pattern, (c) determining an hole angle and a hole position for the eyeglass lens based on the surface curve of the demo lens and the hole position data to obtain drilling data. | 09-11-2008 |
20080212029 | Fundus camera - A fundus camera capable of preferably photographing the periphery of a fundus irrespective of the state of an eye includes a photographing optical system having a photographing optical axis for photographing the fundus, a fundus observation optical system for picking up a fundus observation image, an alignment target projection optical system for projecting an alignment target onto an anterior segment of the eye, an alignment target image detection optical system, a photographing unit housing the systems, a moving mechanism moving the unit for alignment of the axis, a fixation target presenting system for guiding a visual line direction, a target presenting position being selectable or changeable, a display unit, and a controller controlling the display unit to display the observation and target images, wherein the controller includes a program for forming and displaying a reticle mark in displaying the observation image varying the shape of the mark with the presenting position. | 09-04-2008 |