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| Number | Title | Issue Date |
| 5734474 | Device for determining the location of indicators There is shown a device for determining the position of moveable indicators via drive gears (1, 2, 3) by means of a reflex light shutter (4, 12) and one through hole (8a, 8b, 8c, 8d, 11) provided at least in the drive gear (1, 3) in the beam path of the r... | 03/31/1998 |
| 5729475 | Optical system for accurate monitoring of the position and orientation of an object The invention provides an optical system for monitoring the position and orientation of an object in a frame of reference. The system includes at least four light sensors (or light sources) fixed on the object in a non-coplanar arrangement, each producing... | 03/17/1998 |
| 5724141 | Distance measuring apparatus A distance measuring apparatus has: light receiving means for receiving light which is emitted from a light emitting element unit and reflected from an obstacle having a reflecting surface, a pair of members of high reflection performance being respective... | 03/03/1998 |
| 5719677 | Dark field, photon tunneling imaging systems and methods for measuring flying height of read/write heads A dark-field imaging system and method is disclosed that employs photon tunneling to measure the height of read/write heads at full-field and in substantially real-time as the head flies over a disk-shaped recording medium. The system comprises: an analog... | 02/17/1998 |
| 5715060 | Apparatus and method for measuring linear nanometric distances using evanescent radiation An apparatus and method is disclosed for measuring the distance between a first body having a first surface separated by a medium from a second body through the use of transmitted evanescent radiation. The first body is substantially radiation transparent... | 02/03/1998 |
| 5715062 | Method of measuring sizes of mold and mold-associated components by laser measuring instrument A method of measuring precisely and highly accurately the distance between the surface at a predetermined position of a mold and a laser measuring instrument. The distance between the surface of a mold frame and the laser measuring instrument is measured ... | 02/03/1998 |
| 5715061 | Optical measuring apparatus and optical measuring method In an apparatus for optically measuring a sample by irradiating the same with a measuring beam through first and second annular reflecting mirrors, a through hole is provided in the first reflecting mirror and a lens is arranged in such through hole. An i... | 02/03/1998 |
| 5691814 | Position measuring instrument The present invention is directed to a position measuring instrument having a testing device for checking the amplitude of the analog scanner signals and for testing the operation of the trigger stages. In a first preferred embodiment the trigger threshol... | 11/25/1997 |
| 5691815 | Laser inspection tool system A laser inspection tool system (100) includes a hand-held remote tool head (108) that provides an image of a target object (116) and a measurement surface (118). The remote tool head (108) includes light sources (208) and mirrors (210) that in conjunction... | 11/25/1997 |
| 5668742 | Apparatus for determining position of moving body The first object is to correct deviation of a guided moving body by dead reckoning before and after a lap in order to precisely guide it. A second object is to facilitate determination of initial position and initial bearing of a guided moving body by dea... | 09/16/1997 |
| 5668331 | Position sensor The invention relates to a position sensor including at least two sensor units which measure in a contactless manner a position x of an element which is movably arranged relative to the sensor units. Using limited circuitry, the invention precludes source... | 09/16/1997 |
| 5631732 | Surveyor device This invention is a method for remotely obtaining roadway crown point elevation and horizontal location based on projecting a horizontal laser beam configured vertically in either a continuous or discrete manner across the roadway surface at a predetermin... | 05/20/1997 |
| 5628110 | Inspecting method of an electronic component during a mounting operation of the same onto a substrate An electronic component is inspected before it is mounted onto a substrate. The electronic component has a plurality of lead rows, each lead row including plural leads arrayed in a line along and protruding from a side face of a main body of the electroni... | 05/13/1997 |
| 5622170 | Apparatus for determining the position and orientation of an invasive portion of a probe inside a three-dimensional body System for sensing at least two points on an object for determining the position and orientation of the object relative to another object. Two light emitters mounted in spaced relation to each other on an external portion of an invasive probe remaining ou... | 04/22/1997 |
| 5612785 | Twin sensor laser probe The twin sensor laser probe and the method are for absolute depth measurement of two distinct points on an object surface. Two light beams emitted by a light source are directed toward the object surface at acute angles relative thereto, to illuminate two... | 03/18/1997 |
| 5587794 | Surface position detection apparatus A surface position detection apparatus includes a projection optical system for projecting pattern light having a predetermined pattern on a detection surface from an oblique direction to the detection surface, an imaging optical system for forming an ima... | 12/24/1996 |
| 5576831 | Wafer alignment sensor A surface height detection and positioning device for use in a surface inspection system. An incident beam of light impinges obliquely upon the surface, and a position detector is disposed to receive light reflected from the surface. The position detector... | 11/19/1996 |
| 5545160 | Computer oriented stereotactic microneurological surgery An operating microscope has extensions on which are mounted neon lasers which focus beams through the focal point on the optical axis of the operating microscope. The beams produce two spots on an object when the object is away from the focal point, and a... | 08/13/1996 |
| 5532824 | Optical motion sensor An apparatus determines the position of an object with respect to a reference coordinate system. Preferably, the apparatus includes a target attached to the object, the target moves within a defined region and has a surface with a first pattern thereon. A... | 07/02/1996 |
| 5530550 | Optical wafer positioning system The position detector has a sensitivity characteristic graded along a direction transverse to the surface, so that the output of the position detector is used to determine a height of the surface. A surface height detection and positioning device for use ... | 06/25/1996 |
| 5530548 | Calibratable optical distance sensing system and method A calibratable optical distance measuring system (100) and method of calibrating the same utilizes a plurality of electronic calibration constants stored in memory (118) to compensate the measurement output of a position sensitive detector element (18) fo... | 06/25/1996 |
| 5523844 | Displacement detection apparatus An apparatus for detecting a displacement of an object comprises a light source element for emitting a detection light beam, a reflection member for reflecting the detection light beam from the light source element, the detection light beam being irradiat... | 06/04/1996 |
| 5513005 | Method of operating a surgical microscope arrangement for computer-supported stereotactic microsurgery on a patient A defined determination of the field of view observed through a surgical microscope is made. To achieve this determination, the relative current position of the plane of the field of view to the position of an object detail of interest is detected in a si... | 04/30/1996 |
| 5506682 | Robot vision using targets Method and apparatus are disclosed for determining the position and attitude of objects, together with robotic systems employing same, and methods of targeting objects for such purposes. Particularly of interest is the application to continuous conveyors,... | 04/09/1996 |
| 5486926 | Method and a device for a highly accurate measurement of distances, which may change, if a necessary, between an object, for example a clamp workpiece, and a point of reference A method and device is disclosed wherein a subject is excited by electromagnetic radiation in a locally limited range to emit radiation that is not coherent with the exciting radiation. The radiation of atoms lying close to one another on the surface of t... | 01/23/1996 |
| 5463463 | Optical motion sensor An apparatus determines the position of an object with respect to a reference coordinate system. Preferably, the apparatus includes a target attached to the object, the target moves within a defined region and has a surface with a first pattern thereon. A... | 10/31/1995 |
| 5461478 | Method and apparatus for measuring three-dimensional position and orientation of an object using light projection A method and an apparatus capable of accurately measuring the three-dimensional position and orientation of an object in a short data processing time are provided, wherein a first slit light is projected from a first light projector for scanning an object... | 10/24/1995 |
| 5416590 | Apparatus and process for measuring gap and mismatch A hand-held apparatus and process for measuring the gap and mismatch of two adjacent surfaces. The apparatus includes two strobe lights positioned within a hand-held housing. An optical interface within the housing directs a portion of the light generated... | 05/16/1995 |
| 5414515 | Surface position detecting device A surface position detecting device including an irradiating optical system for irradiating first and second points on a surface with first and second light patterns, respectively; a light receiving optical system having an optical axis inclined with resp... | 05/09/1995 |
| 5404021 | Laser sensor for detecting the extended state of an object in continuous motion A non-contact, laser detection system for detecting the extended state of an object in continuous motion such as a drill bit. For detecting the state of sufficient or insufficient flute length of the drill bit, the drill bit is moved in relation to the la... | 04/04/1995 |
| 5392110 | Method and device for measuring height of object whose surface has irregular reflectance In a signal processing circuit, a height arithmetic circuit obtains a measured value of a height of an object by using the principle of triangulation from a second light receiving signal which is transmitted from a second photodetector of position detecti... | 02/21/1995 |
| 5379106 | Method and apparatus for monitoring and adjusting the position of an article under optical observation Planar light sources are directed at an article on either side of the optical axis so that the trace of each light beam defines a line, on either side of the optical axis, whose form is dependent on the shape of the surface of the article. To determine wh... | 01/03/1995 |
| 5359417 | Surgical microscope for conducting computer-supported stereotactic microsurgery and a method for operating the same A defined determination of the field of view observed through a surgical microscope is made. To achieve this determination, the relative current position of the plane of the field of view to the position of an object detail of interest is detected in a si... | 10/25/1994 |
| 5327082 | On line electromagnetic web thickness measuring apparatus incorporating a servomechanism with optical distance measuring Apparatus for measuring the thickness of a moving web of material in which a ferromagnetic core carrying a winding and a ferromagnetic disc are disposed on opposite sides of the web at constant distances therefrom with at least one of said distances being... | 07/05/1994 |
| 5311289 | Picture processing method in optical measuring apparatus An optical measuring apparatus for use in this method has a projector for radiating a slit light on a workpiece and an image sensing device for picturing an optically cross-sectional image drawn by the slit light radiated on the workpiece. An optical axis... | 05/10/1994 |
| 5311288 | Method and apparatus for detecting surface deviations from a reference plane A method and apparatus for detecting deviation of an examined surface from a reference plane, by: generating first and second beams of radiation, directing the first beam along a first fixed path and focussing it at a first spot on the examined surface, d... | 05/10/1994 |
| 5298976 | Method and apparatus for measuring surface distances from a reference plane A method of measuring the distance of an examined surface from a reference plane, by: (a) directing a parallel beam of radiation along a first optical path in which the parallel beam is focussed as a spot on the examined surface and reflected therefrom; (... | 03/29/1994 |
| 5280542 | XYZ coordinates measuring system XYZ coordinates of an object are measured by projecting pulse slit light onto the object, imaging the slit line formed on the surface of the object by a TV camera, and processing the video signal from the camera according to the scanning signals from the ... | 01/18/1994 |
| 5198877 | Method and apparatus for three-dimensional non-contact shape sensing This method and apparatus optically samples numerous points on the surface of an object to remotely sense its shape utilizing two stages. The first stage employs a moveable non-contact scanner, which in normal operation sweeps a narrow beam of light acros... | 03/30/1993 |
| 5107449 | Distance measuring device A distance measuring device determines the distance to an object. A position detector detects the position of a signal reflected off an object. The position detector has a plurality of outputs wherein the ratio between the outputs vary in accordance with ... | 04/21/1992 |
