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Browse by Category: Main > Optical & Optics
Class Information
Number: 356/395
Name: Optics: measuring and testing > By configuration comparison > With relatively movable optical grids
Description: Subject matter comprising plural optical grids which are relatively movable.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8508710 Display panel Aug. 13, 2013
8466966 Video calibration device Jun. 18, 2013
7660447 Detection of fingerprint distortion by deformation of elastic film or displacement of transparent board Feb. 9, 2010
7365862 Methods and apparatus for inspecting an object Apr. 29, 2008
6750899 Solder paste inspection system Jun. 15, 2004
6403950 Method of producing a carrier frequency modulated signal Jun. 11, 2002
6396942 Method and apparatus for locating ball grid array packages from two-dimensional image data May. 28, 2002
6271022 Device for incubating and monitoring multiwell assays Aug. 7, 2001
6151406 Method and apparatus for locating ball grid array packages from two-dimensional image data Nov. 21, 2000
6043500 Exposure apparatus and its control method Mar. 28, 2000
5995232 Method of and device for inspecting a PCB Nov. 30, 1999
5969342 Multiplexable optical fiber displacement, strain acceleration and pressure sensors and method of operating the same Oct. 19, 1999
5959295 Timing device and method for positioning non-linear machine parts Sep. 28, 1999
5867250 Apparatus and method for optically mapping front and back surface topographies of an object Feb. 2, 1999
5623142 Optical encoding detecting coarse and fine position Apr. 22, 1997
5616917 Device for measuring an angle between pivotally-connected members Apr. 1, 1997
5498867 Wavelength-division multiplex digital optical position sensor Mar. 12, 1996
5384000 Semiconductor chip mounting method and apparatus Jan. 24, 1995
5324381 Semiconductor chip mounting method and apparatus Jun. 28, 1994
5099583 Incremental measuring system Mar. 31, 1992
5065017 Zero mark for optical encoder using stator mask patterns and rotor patterns Nov. 12, 1991
4928169 Mensuration frame grabbing apparatus May. 22, 1990
4924505 Method of mensuration of an image on an object May. 8, 1990
4878247 Method for the photogrammetrical pick up of an object with the aid of at least one opto-electric solid-state surface sensor Oct. 31, 1989
4808807 Optical focus sensor system Feb. 28, 1989
4776669 Optical path sensor including a filter Oct. 11, 1988
4766310 Photoelectric position measuring instrument with grids Aug. 23, 1988
4717824 Photoelectric displacement detecting apparatus Jan. 5, 1988
4700063 Encoder output error detecting circuit Oct. 13, 1987
4667096 Position measuring system comprising at least two scanning units May. 19, 1987
4652746 Synchronizing device for electrically actuated coupling Mar. 24, 1987
4586760 Measuring scale casing and mounting spar May. 6, 1986
4554450 Device for angle of rotation determination Nov. 19, 1985
4499374 Photoelectrical encoder employing an optical grating Feb. 12, 1985
4429219 Apparatus for determining and indicating the position of a movable member Jan. 31, 1984
4427883 Optical sensing system for extensible tape rules Jan. 24, 1984
4423958 Test apparatus for digital photoelectric length or angle measuring instrument Jan. 3, 1984
4406946 Pulse signal generating device for tape recorder Sep. 27, 1983
4330212 Triaxis laser alignment system and method May. 18, 1982
4302109 Position encoders Nov. 24, 1981
4299165 Color separation orientation gauge and method Nov. 10, 1981
4293188 Fiber optic small displacement sensor Oct. 6, 1981
4272196 Optical sizing mask and process Jun. 9, 1981
4250381 Linear scale type measuring device Feb. 10, 1981
4222633 Optical arrangement for geometrically separating the light fluxes in imaging systems Sep. 16, 1980
4218615 Incremental digital shaft encoder Aug. 19, 1980
4195909 Scanning grating for a focus detector Apr. 1, 1980
4184827 Apparatus for monitoring and controlling the operation of a dual platen press Jan. 22, 1980
4180704 Detection circuit for a bi-directional, self-imaging grating detector Dec. 25, 1979
4176276 Photoelectric incident light distance measuring device Nov. 27, 1979

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