| Entries |
| Document | Title | Date |
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| 20080204766 | METHOD AND MICROSCOPE DEVICE FOR OBSERVING A MOVING SPECIMEN - There is provided a microscope device comprising an objective, a light source for illuminating a specimen via an illumination beam path, an arrangement for continuously moving the specimen during observation in a direction perpendicular to the optical axis of the objective, a two-dimensional detector for detecting light coming from the specimen via an image beam path, said detector being capable of shifting charges during observation in a row-wise manner in the direction of the movement of the specimen on the detector, a beam deflection element which is adjustable for moving the illumination beam path and the image beam path during observation relative to the specimen in the direction of the movement of the specimen, and a control unit for selecting the velocity of the specimen, the adjustment velocity of the beam deflection element and the charge shift velocity in such a manner that the charge shift velocity acts to compensate the movement of a point of the specimen, which point is imaged onto the detector, on the detector. | 08-28-2008 |
| 20080246973 | Method and Device for Determining the Lateral Relative Displacement Between a Processing Head and a Workpiece - The present invention relates to a method for determining a lateral relative movement between a processing head and a workpiece during processing the workpiece as well as a device to carry it out. In the method a surface of the workpiece ( | 10-09-2008 |
| 20080252905 | CENTRIFUGAL FORCE BASED MICROFLUIDIC DEVICE, MICROFLUIDIC SYSTEM INCLUDING THE SAME, AND METHOD OF DETERMINING HOME POSITION OF THE MICROFLUIDIC DEVICE - Provided is a centrifugal force based microfluidic system including: a microfluidic device including a rotatable platform and an optical path formed to extend horizontally in a straight line from a circumference of the platform; a motor rotating so as to control the microfluidic device; a light emitting unit emitting light towards the microfluidic device; a light receiving unit detecting the light emitted from the light emitting unit; and a controller determining a home position to be the position of the microfluidic device at a point of time when the light emitted from the light emitting unit is detected by the light receiving unit, wherein the light emitted from the light emitting unit passes through the optical path to be incident on the light receiving unit only when the microfluidic device is located in a predetermined position. | 10-16-2008 |
| 20080252906 | ABSOLUTE POSITION LENGTH-MEASUREMENT TYPE ENCODER - An absolute position length-measurement type encoder includes a scale having an incremental track, an absolute track, and a reference position track. The incremental track has incremental patterns including first light and dark patterns formed at equal intervals in first periods. The absolute track has absolute patterns representing an absolute position. The reference position track has reference position patterns including second light and dark patterns formed at equal intervals in second periods longer than the first periods. A light source emits a measurement light to the scale. A photodetector receives the measurement light reflected at or transmitted through the scale. A signal processing circuit processes the received light signal of the photodetector to detect an absolute position of the scale. | 10-16-2008 |
| 20090002720 | Device for measuring positions of structures on a substrate - A device for measuring positions of structures ( | 01-01-2009 |
| 20090009775 | Reticle, apparatus for monitoring optical system, method for monitoring optical system, and method for manufacturing reticle - A reticle has a mask substrate, a test pattern established on the mask substrate having an asymmetrical diffraction grating so as to generate positive first order diffracting light and negative first order diffracting light in different diffraction efficiencies, and a device pattern adjacent to the test pattern established on the mask substrate. | 01-08-2009 |
| 20090051934 | Method and apparatus for vibration detection and vibration analysis, and lithographic apparatus equipped with such an apparatus - The invention provides a method for determining vibration-related information by projecting an aerial image at an image position in a projection plane, mapping an intensity of the aerial image into an image map, the image map arranged for comprising values of coordinates of sampling locations and of the intensity sampled at each sampling location, and measuring intensity of the aerial image received through a slot pattern. The method further includes determining from the image map a detection position of a slope portion of the image map, at the detection position of the slope portion, measuring of a temporal intensity of the aerial image and measuring of relative positions of the slot pattern and the image position, the relative positions of the slot being measured as position-related data of the slot pattern and determining from the temporal intensity of the aerial image vibration-related information for said aerial image. | 02-26-2009 |
| 20090128832 | Lithographic Method - A method includes determining relative positional relationships between applied fields on a substrate, one of the applied fields including a first field; in a lithographic apparatus, using an alignment apparatus to obtain at least one absolute positional relationship between the position of at least the first field of the substrate and a part of the lithographic apparatus; and determining an absolute positional relationship between at least one field, other than the first field, and a part of the lithographic apparatus using the relative positional relationships and the at least one obtained absolute relationship. | 05-21-2009 |
| 20090141289 | METHOD FOR DETERMINING AT LEAST THE POSITION OF A MOVABLE PART OF A DRIVE UNIT SUCH AS AN INTERNAL COMBUSTION ENGINE OR THE SIMILAR - A method for determining at least the position of a moving part of the drive assembly, in which the part is illuminated or exposed to light and thereby the passage of light between the moving part and a part which corresponds thereto is determined. The passage of light changes or can even be briefly interrupted during the movement of the part. As a result, it is possible to obtain reliable information about the instantaneous position of the respective part. The method can be used more widely than the known capacitive determination of the position of a moving part and is, in particular, independent of the material of the part. | 06-04-2009 |
| 20090161120 | HAND POSITION DETECTING DEVICE AND METHOD - A hand position detecting device stops optical detection of the respective rotational positions of seconds, center and hour hands when such detection is impossible. When it is determined that the respective positions of the hands have not been detected successively a predetermined number of times, the detection of the hand positions is stopped until a predetermined time, for example 5 minutes before 11 o'clock or 55 minutes past 10 o'clock. This prevents unnecessary repetition of detection of the hand positions and hence useless consumption of battery energy which would otherwise occur. | 06-25-2009 |
| 20090219547 | Method and Device for Position Sensing in an Imaging System - In a camera where the lens or image sensor is laterally moved in a carrier to shift the image for compensating for unwanted camera movement, a reflection surface is used to reflect light, and a photo-emitter/sensor pair is used to illuminate the reflection surface and to detect reflected light therefrom. Reflection surface is provided near the edge of one carrier section e and photo-emitter/sensor pair is disposed on another carrier section. These sections are movable relative to each other for imaging shifting purposes. The photo-emitter/sensor pair is positioned such that the light cone emitted by the photo-emitter partly hits the V reflection surface and partly falls beyond the edge. As the photo-emitter/sensor pair and the reflection surface move relative to each other, the area on the reflection surface illuminated by the photo-emitter changes causing a change in the amount of detected light. | 09-03-2009 |
| 20090219548 | Making Method of Sample for Evaluation of Laser Irradiation Position and Making Apparatus Thereof and Evaluation Method of Stability of Laser Irradiation Position and Evaluation Apparatus Thereof - A method for making a sample for evaluation of laser irradiation position and evaluating the sample, and an apparatus which is switchable between a first mode of modification of semiconductor and a second mode of making and evaluating the sample. Specifically, a sample is made by irradiating a semiconductor substrate for evaluation with a pulse laser beam while the semiconductor substrate is moved for evaluation at an evaluation speed higher than a modifying treatment speed, each relative positional information between pulse-irradiated regions in the sample is extracted, and stability of the each relative positional information between pulse-irradiated regions is evaluated. The evaluation speed is such a speed that separates the pulse-irradiated regions on the sample from each other in a moving direction. | 09-03-2009 |
| 20090231596 | LASER TRANSMITTER - A laser transmitter has a transmitter housing and a laser source in the housing. A gimbal support arrangement supports the laser source in the housing and includes a gimbal motor arrangement for moving the gimbal support arrangement and said laser source in said housing. A gimbal motor drive circuit actuates the gimbal motor arrangement to cause the gimbal support arrangement to move in said housing. A plurality of optical proximity sensors sense the orientation of said gimbal support arrangement to the interior of said housing. By this arrangement, damage to the transmitter is prevented. | 09-17-2009 |
| 20090262368 | LIGHT PIPE FOR LOW PROFILE OPTICAL NAVIGATION SYSTEMS - A light pipe for an optical navigation system. The light pipe includes a collection surface, a collimation surface, and a reflective surface. The collection surface is to accept incident light into the light pipe from a light source. The collimation surface is to collimate the light and to direct the collimated light to a navigation plane for detection by a navigation sensor. The reflective surface is between the collection surface and the collimation surface and is to reflect the light along a reflective path as the light travels within the light pipe from the collection surface to the collimation surface. The reflective surface has a curved geometry oriented substantially along the path of travel of the light through the light pipe. The curved geometry of the reflective path facilitates convergence of the light with respect to a first axis. | 10-22-2009 |
| 20090262369 | APPARATUS AND METHOD FOR MEASURING DISTANCES - An apparatus for measuring distances includes a lens module, a light sensor, and a calculation module. The lens module is used for imaging an object to be measured. The lens module has a focal plane which is non-vertical to the light axis thereof. The light sensor is used for receiving the image of the object through the lens module, and generating a corresponding signal accordingly. The calculation module is used for calculating the distance of the object based on a high frequency part of the signal. A relative method for measuring distances is provided as well. | 10-22-2009 |
| 20090310146 | SYSTEM, APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT FOR OPTICAL POSITION RECOGNITION - A system, apparatus, method, and computer program product for evaluating an object disposed on an upper surface of an object holder. At least one first frame representing a captured portion of the object is acquired, while the object holder is positioned at each of a plurality of locations. At least one second frame representing a captured portion of at least one other surface of the object holder besides the upper surface is acquired, while the object holder is positioned at each of the plurality of locations. At least one spatial characteristic associated with the captured portion of the object is determined, based on at least one of the acquired frames. A three-dimensional representation of the object can be formed based on the first frames and at least one spatial characteristic. | 12-17-2009 |
| 20100073686 | CLUSTERING PROTOCOL FOR DIRECTIONAL SENSOR NETWORKS - A method and apparatus for tracking target objects includes a network of unidirectional sensors which correspond to nodes on the network. The sensors identify the presence of a target object, determine a first criteria for the relationship of the target object to the sensors and send a message to sensors neighboring the sensor. The message includes a unique identification of the target object and the first criteria. The sensors are ranked to determine which of the sensors should head a cluster of sensors for tracking the target object. Clusters are propagated and fragmented as the target object moves through a field of sensors. | 03-25-2010 |
| 20100085581 | Optical scanning-based system for detecting position and/or orientation of objects - The optical device for determining position and orientation of an object comprising a fixed part comprises a laser beam projector with sequential scan and a projection centre (O), defining the centre of a reference frame (R) in space. | 04-08-2010 |
| 20100110449 | Device for Determining the Position of at Least One Structure on an Object, Use of an Illumination Apparatus with the Device and Use of Protective Gas with the Device - A device for determining the position of a structure ( | 05-06-2010 |
| 20100123905 | LOCALIZATION SYSTEM AND LOCALIZATION METHOD - A localization system includes: n+1 number of luminescent devices, where n is an integer greater than or equal to one; and a position measurement device moving in each direction of n number of axes, wherein the luminescent device includes a luminescent unit, the luminescent unit emitting a light for measurement having an intensity that varies at a predetermined time cycle, the luminescent unit also emitting a light for identification including an information representing a position of the luminescent device, the luminescent unit emitting the light for measurement and the light for identification in synchrony with a phase of those emitted by another luminescent device; and the position measurement device includes a light reception unit, a position obtaining unit, a phase computation unit, a standard luminescent device selection unit, a phase difference computation unit, and a position computation unit. | 05-20-2010 |
| 20100141964 | Light barrier - The invention relates to a light barrier for the detection of an object ( | 06-10-2010 |
| 20100165359 | OPTICAL ENCODER - An optical encoder includes a scale, and a detecting head which is disposed facing the scale. The scale is provided with a grating which has a predetermined optical pattern with respect to a direction of relative movement, and the detecting head is provided with a light emitting section which irradiates predetermined light to the scale, and a light detecting section which detects a movement of a pattern of light distribution formed on a light receiving surface of a photodetector, by light reflected by the grating upon being irradiated to the scale from the light emitting section. A light transmitting member is disposed on a surface of the light emitting section and the photodetector of the detecting head, toward the scale, and a light propagation controlling pattern for controlling propagation of light is disposed on a surface of the light transmitting member, facing the scale. | 07-01-2010 |
| 20100165360 | SYSTEM FOR TESTING DISTORTION OF LIQUID CRYSTAL DISPLAY DEVICE - A system for testing a distortion of a liquid crystal display (LCD) device can test the LCD device within a chamber in a state of being assembled perpendicular to the ground, whereby whether any distortion occurs in an internal component can be fast detected even in severe conditions of high temperature and high humidity and under an actual installation environment of a user. | 07-01-2010 |
| 20100201994 | SIDEWAYS DRIFT CORRECTION DEVICE - The invention relates to a sideways drift correction device for a mobile production machine comprising a removal of material and a tool for processing the removed material, having a sensor component and an evaluation component. The sensor component detects the structure of at least one part of the underground surface relative to which the production machine moves. The evaluation component determines the relative motion direction of a reference point on the production machine relative to the subsoil from the time-variable information of the underground surface, and derives steering correction information therefrom. | 08-12-2010 |
| 20100225929 | POSITIONING METHOD AND POSITIONING SYSTEM BASED ON LIGHT INTENSITY - A positioning method and a positioning system based on light intensity are provided. The positioning system comprises a lighting system, a sense feedback device and a positioning module. The lighting system comprises at least three point light sources and sequentially adjusts luminance of these point light sources to light up a target. The sense feedback device is disposed on the target and used to collect light intensity information of the light projected on the target by the lighting system. The positioning module calculates a distance between the target and each of the point light sources based on the light intensity information and calculates a positioning location of the target based on the locations of the point light sources and the distances between the target and the point light sources. | 09-09-2010 |
| 20100309485 | ARRANGEMENT AND METHOD FOR MEASURING RELATIVE MOVEMENT - The present invention relates to an arrangement for measuring relative movement. The measuring arrangement comprises a light source ( | 12-09-2010 |
| 20100328680 | OPTICAL SENSOR - An optical sensor ( | 12-30-2010 |
| 20110001986 | TILT SENSOR FOR A MEASURING INSTRUMENT - A position-determining apparatus, such as measuring or surveying instruments, is disclosed. In at least one embodiment, the present invention relates to a tilt sensor for a measuring instrument including a movable housing that is controllably rotatable around a rotational axis, wherein the rotational axis may be positioned so that it deviates from a true vertical axis being parallel with a gravitational axis. In at least one embodiment, the tilt sensor includes a gravity sensitive gradient indicating element arranged such that a surface of the element is positioned orthogonally to the true vertical axis during movements of the measuring instrument, wherein the gravity sensitive gradient indicating element is arranged in connection to the non-rotating base; and a detecting device adapted to produce at least one detecting signal and to receive at least one response signal, wherein a deviation between the rotational axis and the true vertical axis is detectable using the at least one response signal. | 01-06-2011 |
| 20110013199 | MEASURING HEAD SYSTEM FOR A COORDINATE MEASURING MACHINE AND METHOD FOR OPTICALLY MEASURING OF DISPLACEMENTS OF A PROBE ELEMENT - The invention relates to a measuring head system ( | 01-20-2011 |
| 20110019205 | Apparatus and method for implementing a touchless slider - A method for gesture recognition in an optical system using a touchless slider is shown. The touchless slider has first and second reference points positioned along an axis in an optical system. The method includes obtaining a plurality of first and second reflectance values by measuring an amplitude of light reflected from an object relative to the first and second reference points, respectively, wherein each first and second reflectance value corresponds to a different point in time. The plurality of first and second reflectance values are compared to identify a plurality of ratio values between the first and second reflectance values, wherein each of the plurality of ratio values corresponds to one of the points in time. At least one of a position and a direction of movement of the object relative to the first and second reference points is determined based on the identified plurality of ratio values. | 01-27-2011 |
| 20110043829 | SURFACE ALIGNMENT AND POSITIONING METHOD AND APPARATUS - A method and apparatus for aligning and positioning a surface such that the optical and/or cylinder axis of the surface is precisely aligned with a fixture for the purpose of assembly or further mechanical operations such as machining and polishing. According to another aspect of the invention, a lens apex is located and precisely positioned a constant distance from a reference point. In order to implement the above, a method and apparatus is disclosed for optically aligning and positioning surfaces using a precision laser displacement measurement device, an X-Y-Z micron stage, and a microprocessor (or computer) capable of performing curvature analysis. | 02-24-2011 |
| 20110043830 | OPTICAL POSITION DETECTION - Method and apparatus ( | 02-24-2011 |
| 20110069322 | LASER POINTING MECHANISM - A pointing device for use with a laser tracker or laser scanner may include a tracker or scanner control system and a tracker or scanner plant. The tracker plant may include a plurality of motors configured to apply a torque to a mechanism that steers the laser and a plurality of angular encoders configured to send feedback information on the angular position of the mechanism to the tracker control system. The tracker or scanner control system may be configured such that, when the pointing device is operating in a manual adjustment mode, the tracker or scanner control system controls the plurality of motors to provide a torque to the mechanism opposite to a direction of movement caused by the user. | 03-24-2011 |
| 20110075158 | OPTICAL CRASH SENSOR - A crash sensor is provided on a vehicle having first and second vehicle structures. The crash sensor includes a light transmitter for emitting a light signal within an opening between the first vehicle structure and the second vehicle structure, and a photo receiver for sensing irradiance in the opening between the first vehicle structure and the second vehicle structure. A change in irradiance or illuminance is indicative of a change in displacement of the first structure relative to the second structure indicative of deformity of the vehicle. The sensor further includes processing circuitry for processing the sensed irradiance and detecting a vehicle crash based on the change in sensed irradiance. | 03-31-2011 |
| 20110085181 | MEASURING HEAD FOR A CHASSIS MEASURING SYSTEM, CHASSIS MEASURING SYSTEM AND METHOD FOR DETERMINING THE POSITION PARAMETERS OF MEASURING HEADS OF A CHASSIS MEASURING SYSTEM - A chassis measuring system comprises an illumination device for producing a structured illumination ( | 04-14-2011 |
| 20110090516 | BEAM IRRADIATION DEVICE - A beam irradiation device includes a photodetector which receives servo light and outputs a detection signal depending on a light receiving position of the servo light, and a signal processing section which obtains the light receiving position based on the detection signal. In the above arrangement, the signal processing section has an A/D conversion circuit which converts the detection signal into a digital signal, and an error signal adjusting circuit which converts an error component signal to be outputted from the photodetector when the photodetector is not irradiated by the servo light, into a signal within a processable range of the A/D conversion circuit, and supplies the converted signal to the A/D conversion circuit. A first digital signal derived from the detection signal is corrected with a second digital signal derived from the error component signal. | 04-21-2011 |
| 20110170119 | SYSTEM AND METHOD OF DETECTING MOVEMENT OF AN OBJECT - The present invention relates to a detection system for detecting movements of a movable object ( | 07-14-2011 |
| 20110181893 | Apparatus and method for tracking movement of a target - The present invention discloses an apparatus and method to track the movement of a target. One embodiment tracks the movement of the patient during medical imaging scanning using optical technology. Optical systems record the position and movement of the target and provide inputs to a processor. The processor is capable of performing mathematical analysis of the movement of the target to determine the positional shift of the patient. Weighted averages, phase correlation, Fourier-Mellin algorithms, and cross-correlation of data related to X-Y translation are used to calculate movement of the target subject. Feedback related to the movement is provided to the medical imaging scanning machine which allows for adjustments in focusing coils for real time tracking of the patient's movements during the procedure. As a result, the medical image scanning procedure becomes more accurate as it is adjusted for the patient's movements. | 07-28-2011 |
| 20110194122 | CLEARANCE AND WEAR DETERMINATION APPARATUS - Apparatus is provided for determining the clearance between a member and a casing surface over and relative to which the member moves, e.g. in a gas turbine engine. The apparatus includes a main waveguide and a reference element that is provided at a position intermediate the proximal and distal ends, or at the distal end, of the waveguide. The transmitter/receiver is arranged to transmit an electromagnetic signal through the main waveguide and receive (i) a first portion of the electromagnetic signal reflected from the reference element, (ii) a second portion of the electromagnetic signal reflected from the casing surface, and (iii) a third portion of the electromagnetic signal reflected from the member, allowing the relative positioning of the reference element, the casing surface and the member to be simultaneously determined. | 08-11-2011 |
| 20110249274 | Pressure isolated fiber optic torque sensor - Fabry-Perot and Bragg grating optical measuring principles are combined with a torsional stress sensing mechanism that converts torque applied in one fluid environment to force exerted in a second environment to measure extreme environmental parameters such as pressure in a petroleum producing borehole. | 10-13-2011 |
| 20110304858 | MOVABLE BODY SYSTEM - A movable body system includes a movable body to which an image pickup apparatus is attached; an image analyzer that performs image matching between the image captured by the image pickup apparatus and an image, which is previously captured on the travel path of the movable body; a wall-surface detector that detects directions of the movable body with respect to wall surfaces, which are arranged along the travel path, and distances between the wall surfaces and the movable body; and a traveling-direction calculator that detects a shift of the movable body with respect to the travel path from an output of the image analyzer or the wall-surface detector, and calculates a traveling direction to cause the movable body to travel on the travel path. | 12-15-2011 |
| 20120033233 | OPTICAL POSITION DETECTION APPARATUS AND APPLIANCE HAVING POSITION DETECTION FUNCTION - An optical position detection apparatus detects the position of a target object in a Z-axis direction and the position of the target object in an X-axis direction based on the result of the light reception in a light receiving unit when light source units that are spaced apart in the X-axis direction are sequentially turned on and the result of the light reception in the light receiving unit when light source units that are spaced apart in the Z-axis direction are sequentially turned on among a first light source unit, a second light source unit, and a third light source unit. The emission directions of the detection lights in the first light source unit, the second light source unit, and the third light source unit are equal to one another in the Z-axis direction. | 02-09-2012 |
| 20120033234 | MAKING METHOD OF SAMPLE FOR EVALUATION OF LASER IRRADIATION POSITION AND MAKING APPARATUS THEREOF AND EVALUATION METHOD OF STABILITY OF LASER IRRADIATION POSITION AND EVALUATION APPARATUS THEREOF - A method for making a sample for evaluation of laser irradiation position and evaluating the sample, and an apparatus which is switchable between a first mode of modification of semiconductor and a second mode of making and evaluating the sample. Specifically, a sample is made by irradiating a semiconductor substrate for evaluation with a pulse laser beam while the semiconductor substrate is moved for evaluation at an evaluation speed higher than a modifying treatment speed, each relative positional information between pulse-irradiated regions in the sample is extracted, and stability of the each relative positional information between pulse-irradiated regions is evaluated. The evaluation speed is such a speed that separates the pulse-irradiated regions on the sample from each other in a moving direction. | 02-09-2012 |
| 20120099117 | Single laser beam measurment system - A single laser beam measurement system employing retro-reflective striped targets is disclosed having an error correction mechanism which compensates for errors arising from the target not being square to a laser scanning beam. | 04-26-2012 |
| 20120099118 | Optical Position-Measuring Device - An optical position-measuring device includes a light source, a measuring reflector movable in space, a detection unit and a light-beam deflection unit that can align at least one beam of rays, emitted by the light source, in the direction of the measuring reflector. The light-beam deflection unit includes a cardan system having two cardan frames. A first cardan frame is adjustable by motor about a first axis of rotation, and a second cardan frame within the first cardan frame is adjustable by motor about a second axis of rotation oriented in a direction perpendicular to the first axis of rotation. The two axes of rotation intersect in a fixed reference point, at which a reference reflector is disposed. A plurality of mirrors are disposed rigidly on the cardan frames, so that the beam of rays can be pivoted about the fixed reference point via the mirrors during alignment. | 04-26-2012 |
| 20120113436 | OPTICAL DETECTION DEVICE, ELECTRONIC APPARATUS, AND OPTICAL DETECTION METHOD - An optical detection device includes: an irradiation unit that emits irradiation light onto an area formed along a planar area; first and second light receiving units that receive reflection light of the irradiation light reflected by a target object; and a calculation unit that calculates positional information of the target object based on a light reception result of at least one of the first and second light receiving units. A distance between the second light receiving unit and the planar area is shorter than a distance between the first light receiving unit and the planar area, and the first and second light receiving units receive the reflection light that is incident in a direction along the planar area. | 05-10-2012 |
| 20120212749 | Measuring Method, Measuring Apparatus, Lithographic Apparatus and Device Manufacturing Method - An apparatus (AS) measures positions of marks ( | 08-23-2012 |
| 20120262730 | ENHANCED POSITION DETECTOR IN LASER TRACKER - A device sends a first light beam to a target which returns a portion of the first beam as a second beam. First and second motors direct the first light beam to a first direction determined by first and second angles of rotation about first and second axes. First and second angle measuring devices measure first and second angles of rotation. A distance meter measures a first distance between device and target. A second portion of the second beam passes through a diffuser and onto a position detector which produces a first signal in response. A control system sends a second signal to the first motor and a third signal to the second motor, the second and third signals based on the first signal. The control system adjusts the first direction of the first beam to the target position. A processor provides a 3D coordinate of the target. | 10-18-2012 |
| 20120281241 | TILT SENSOR - A tilt sensor includes a body, a light emitting diode (LED), a first photosensitive element, a second photosensitive element, and a moving element. The body can tilt in a plurality of tilt directions. The LED is disposed at the body for providing a light beam. The first photosensitive element is disposed at the body and at the opposite side of the LED. The second photosensitive element is disposed at the body and at another side of the LED. The moving element is disposed at the body. When the body tilts toward different tilt directions, the moving element moves toward different directions so that different light receiving situations are produced. | 11-08-2012 |
| 20130088725 | POSITIONING METHOD AND POSITIONING SYSTEM BASED ON LIGHT INTENSITY - A positioning method and a positioning system based on light intensity are provided. The positioning system comprises a lighting system, a sense feedback device and a positioning module. The lighting system comprises at least three point light sources and sequentially adjusts luminance of these point light sources to light up a target. The sense feedback device is disposed on the target and used to collect light intensity information of the light projected on the target by the lighting system. The positioning module calculates a distance between the target and each of the point light sources based on the light intensity information and calculates a positioning location of the target based on the locations of the point light sources and the distances between the target and the point light sources. | 04-11-2013 |
| 20130120763 | MEASUREMENT SYSTEM OF A LIGHT SOURCE IN SPACE - A system measures the position of a light source in space using an imager and transparent surface with a pattern on top. The pattern consists of a repetitive pattern and a distinctive element. The system achieves sub-micron precision. It also handles the measurement of several light sources simultaneously, and the measurement of the position of a retroreflector instead of the light. | 05-16-2013 |
| 20130250311 | DETECTING DEVICE AND METHOD FOR DETECTING A TRANSPARENT GRATING STRUCTURE - A detecting device includes an actuating unit for driving a transparent grating structure, a light source for emitting light to the transparent grating structure driven by the actuating unit, a light sensor for sensing the light emitted from the light source as the transparent grating structure is moved to different positions relative to the light source so as to generate a corresponding optical intensity signal, a transforming circuit coupled to the light sensor for transforming the optical intensity signal into a transforming signal, and a processing unit coupled to the transforming circuit for determining a position of the transparent grating structure according to the transforming signal transmitted from the transforming circuit. | 09-26-2013 |
| 20130308140 | METHOD FOR SPATIALLY MULTIPLEXING TWO OR MORE FRINGE PROJECTION SIGNALS ON A SINGLE DETECTOR - Fringe patterns at first and second spatial frequencies are projected onto a work piece surface and a reference surface, respectively. An image of the projected fringe patterns is obtained and a measurement signal associated with work piece displacements and a reference signal are obtained based on the first and second spatial frequencies. The image of the projected fringe patterns can exhibit substantial or complete overlap of the fringe patterns at the first and second spatial frequencies, and the overlapping patterns can be separated based on the spatial frequencies. Fringe pattern shifts at one or both of the first and second spatial frequencies can be used to adjust a pattern transfer system to permit accurate pattern transfer. | 11-21-2013 |
| 20140078518 | METHOD AND APPARATUS OF MEASURING PRECISE HIGH SPEED DISPLACEMENT - The present invention relates to a method and apparatus for measuring precise high speed displacement, and more particularly, to a method and apparatus for measuring precise high speed displacement, which measures displacement of a test specimen by using a uniform intensity laser line and by using differences in a laser transmission amount according to the deformation of the test specimen, and measures a strain rate of the test specimen such as high strength fiber or the like using a high speed tensile test. | 03-20-2014 |
| 20140092396 | Device for measuring the relative position of two objects moving in relation to each other - The invention relates to a device for measuring the relative position of two objects moving relative to each other along an axis or around a rotating axis (D), with a transmitter ( | 04-03-2014 |
| 20140111814 | PHOTOELECTRIC SENSOR - The disclosure provides a photoelectric sensor that provides useful information to set measurement conditions. The photoelectric sensor includes a light emitting unit having a light emitting element configured to emit detection light toward a detection area, a light receiving unit having a light receiving element configured to receive the detection light from the detection area and to obtain a detection value corresponding to the amount of light received, and a display unit configured to display information about the detection value in the light receiving unit. When the detection value varies across a predetermined threshold, the display unit displays a transit time that is the time from when the detection value crosses the predetermined threshold until when it crosses the predetermined threshold again, and a variation amount of the detection value in the variation. | 04-24-2014 |
| 20160123894 | Measurement Systems Having Linked Field And Pupil Signal Detection - Methods and systems for simultaneous detection and linked processing of field signals and pupil signals are presented herein. In one aspect, estimates of one or more structural or process parameter values are based on field measurement signals, pupil measurement signals, or both. In addition, the quality of the measurements of the one or more structural or process parameter values is characterized based on the field measurement signals, pupil measurement signals, or both. In some embodiments, field measurement signals are processed to estimate one or more structural or process parameter values, and pupil measurement signals are processed to characterize the field measurement conditions. In some other embodiments, pupil measurement signals are processed to estimate one or more structural or process parameter values, and field measurement signals are processed to characterize the pupil measurement conditions. | 05-05-2016 |
