Patent application number | Description | Published |
20100302506 | OPTHALMOLOGY PHOTOGRAPHING APPARATUS - A fundus camera includes an illumination unit to illuminate an ocular fundus of a subject's eye, an autofluorescent exciter filter insertable into and retractable from an illumination optical path of the illumination unit, an observation and photographing unit to receive reflection light from the ocular fundus illuminated by the illumination unit and form an ocular fundus image, an autofluorescent barrier filter insertable into and retractable from an observation and photographing optical path, an image capturing unit to capture an ocular fundus image, and a calculation unit to calculate image data, wherein the calculation unit converts the ocular fundus image which is illuminated using the autofluorescent exciter filter and captured by a color image capturing unit as a color image, in a state that no autofluorescent barrier filter is inserted into the observation and photographing unit, into a monochromatic image from specific color data of each of the pixels. | 12-02-2010 |
20110032481 | FUNDUS CAMERA - When a bright spot image A received by an imaging unit is extracted, in step S | 02-10-2011 |
20110051084 | OPHTHALMOLOGIC PHOTOGRAPHING APPARATUS AND PHOTOGRAPHING METHOD THEREFOR - An ophthalmologic photographing apparatus includes an illumination unit configured to illuminate a subject's eye with one of infrared light and visible light, an input unit configured to input a signal to the illumination unit, a measurement unit configured to measure an input time of the signal from the input unit, a detection unit configured to detect that the input time is a predetermined time or longer, and a control unit configured to control the illumination unit according to a detection result by the detection unit to switch from the infrared light to the visible light. | 03-03-2011 |
20120038886 | OPHTHALMOLOGIC OBSERVATION AND PHOTOGRAPHING APPARATUS - An ophthalmologic observation and photographing apparatus capable of photographing a color image and a fluorescence image includes an illumination unit for illuminating a fundus of a subject's eye, an observation and photographing unit for observing and photographing a specified region of the illuminated subject's eye, a barrier filter insertably mounted to the observation and photographing unit and configured to transmit a fluorescence wavelength range and block excitation light, a color photographing unit including a tri-color separation filter and mounted in the observation and photographing unit, and an index projecting unit for projecting an index light to be photographed by superimposing on an image of the specified region of the subject's eye. The index light passes through the barrier filter, includes a wavelength range different from the fluorescence wavelength range, and can pass through a filter having a wavelength range different from a filter which transmits fluorescence through the most among the tri-color separation filter. | 02-16-2012 |
20120081664 | OPTHALMOLOGY PHOTOGRAPHING APPARATUS - A fundus camera includes an illumination unit to illuminate an ocular fundus of a subject's eye, an autofluorescent exciter filter insertable into and retractable from an illumination optical path of the illumination unit, an observation and photographing unit to receive reflection light from the ocular fundus illuminated by the illumination unit and form an ocular fundus image, an autofluorescent barrier filter insertable into and retractable from an observation and photographing optical path, an image capturing unit to capture an ocular fundus image, and a calculation unit to calculate image data, wherein the calculation unit converts the ocular fundus image which is illuminated using the autofluorescent exciter filter and captured by a color image capturing unit as a color image, in a state that no autofluorescent barrier filter is inserted into the observation and photographing unit, into a monochromatic image from specific color data of each of the pixels. | 04-05-2012 |
20120218521 | OPHTHALMIC APPARATUS - An ophthalmic apparatus in which a tilt angle of an operating rod corresponds to a position of an inspection unit adapted to inspect an eye to be examined, and a movable range of the inspection unit is wider than a tilt able range of the operating rod, the apparatus comprising: a detection unit adapted to detect the tilt angle of the operating rod by detecting an electrical signal generated by tilting the operating rod; a calculation unit adapted to calculate a position of the inspection unit which corresponds to the tilt angle; a moving unit adapted to move the inspection unit to a position calculated by the calculation unit; and a switching unit adapted to switch between interruption and resumption of calculation processing performed by the calculation unit. | 08-30-2012 |
20120327366 | FUNDUS CAMERA - An ophthalmologic apparatus including an index projection unit to project an index on a cornea of a subject's eye, an imaging unit to form an image on an imaging plane via an objective lens and capture an image of the index projected on the cornea, and a control unit to control a distance between the subject's eye and the object lens so that a size of the captured index becomes a predetermined size. | 12-27-2012 |
20130162946 | OPHTHALMOLOGIC APPARATUS, AND OPHTHALMOLOGIC METHOD AND PROGRAM - Provided is an ophthalmologic apparatus which is capable of performing offset adjustment of an alignment position while performing transillumination observation by automatic alignment. The ophthalmologic apparatus includes an automatic alignment unit for automatically performing alignment between a measuring portion and an eye to be inspected, and an alignment position changing unit capable of moving an optical axis center position of the measuring portion to an arbitrary position in the transillumination observation. | 06-27-2013 |
20130331679 | CONTACTLESS TONOMETER - In a contactless tonometer having a mechanism of puffing compressed air by moving a piston in a cylinder, puffing of unnecessary air against the eye to be inspected is suppressed. An apparatus includes a corneal shape changing unit configured to change a shape of a cornea of an eye to be inspected by compressing air in a cylinder by using a piston, and puffing the compressed air from the nozzle to the cornea, a piston control unit configured to control operation of the piston, and an intraocular pressure measurement unit configured to measure an intraocular pressure of the eye by detecting a state of a changed shape of the cornea. This apparatus includes a piston volume changing unit configured to change an initial volume when the piston compresses the air in the cylinder. | 12-12-2013 |
20140316233 | NON-CONTACT TONOMETER - In a non-contact tonometer, puffing of air unnecessary for measurement of an eye to be inspected after driving of a solenoid is stopped is suppressed. In the non-contact tonometer including a corneal shape change unit configured to change the shape of the cornea by pressurizing and supplying a gas in a cylinder by a piston, and an eye pressure measuring unit configured to measure the eye pressure from the state of the shape change of the cornea, an opening portion configured to be formed in the outer wall of the cylinder and decide the internal volume of the cylinder when pressurizing the gas, and a pressurized gas volume change unit configured to change a position where the opening portion can connect the inside of the cylinder with the outside, and change the internal volume of the cylinder when pressurizing the gas. | 10-23-2014 |
20140330104 | NON-CONTACT TONOMETER - Provided is a non-contact tonometer capable of inhibiting unnecessary air discharge against an eye to be inspected. The non-contact tonometer includes: a corneal shape deforming unit for pressurizing air in a cylinder using a piston provided in the cylinder and puffing the air through an opening in the cylinder toward a cornea of an eye to be inspected so as to deform the cornea; a piston control unit for controlling operation of the piston; and an eye pressure measurement unit for detecting a state of deformation of the cornea so as to measure an eye pressure of the eye to be inspected. The piston includes: an air ejecting portion provided on the opening side in the cylinder; and a piston drive portion connected to the piston control unit independently of the air ejecting portion. | 11-06-2014 |