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Class Information
Number: 250/201.8
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controls its own optical systems > Automatic focus control > Based on image shift
Description: Subject matter in which the focusing is based on coincidence of two images of the same object moved in the same plane or of the displacement or distance between different images of the same object in the same plane, e.g., the photodetector plane.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8639105 Imaging apparatus having autofocus function, and control method for the imaging apparatus Jan. 28, 2014
8634711 Image capture apparatus and method Jan. 21, 2014
8415599 Device for measuring the defects of an imaging instrument with two opto-electronic sensors Apr. 9, 2013
8412035 Imaging apparatus having autofocus function, and control method for the imaging apparatus Apr. 2, 2013
8358337 Pupil detection device and pupil detection method Jan. 22, 2013
8315514 Image capture apparatus and method Nov. 20, 2012
8248457 Optical device Aug. 21, 2012
8059954 Single lens reflex camera comprising a focus detecting apparatus and method of photographing Nov. 15, 2011
7995910 Imaging device and focal point detector Aug. 9, 2011
7863550 Focus detection device and focus detection method based upon center position of gravity information of a pair of light fluxes Jan. 4, 2011
7864413 Examination apparatus with multiple image acquisition devices Jan. 4, 2011
7826067 Method and apparatus for quantitative 3-D imaging Nov. 2, 2010
7800844 Focus detection optical system and imaging apparatus incorporating the same Sep. 21, 2010
7781710 Image pickup apparatus, control method, and program with autofocus selection Aug. 24, 2010
7745772 Image forming state detection device Jun. 29, 2010
7718940 Compound-eye imaging apparatus May. 18, 2010
7711260 Digital camera and camera system May. 4, 2010
7702229 Lens array assisted focus detection Apr. 20, 2010
7634188 Method and apparatus for calculating a focus metric Dec. 15, 2009
7620312 Focus detection apparatus and signal processing method for focus detection Nov. 17, 2009
7615729 Apparatus and method for resonant lens focusing Nov. 10, 2009
7586072 Correlation operation method, correlation operation device, focus detection device and imaging device Sep. 8, 2009
7582854 Focus detection apparatus for detecting a relative positional relationship between a pair of object images Sep. 1, 2009
7528354 Method and device for position sensing of an optical component in an imaging system May. 5, 2009
7412159 Image pickup apparatus and defocus amount correction value calculation method Aug. 12, 2008
7405762 Camera having AF function Jul. 29, 2008
7365310 Increased depth of field for high resolution imaging for a matrix-based ion source Apr. 29, 2008
7266248 Method and apparatus for generating data representative of an image Sep. 4, 2007
7224498 Image reading apparatus May. 29, 2007
7216081 Interactive process and system for screening cytological specimens May. 8, 2007
7193196 Methods and systems for evaluating optical systems Mar. 20, 2007
7132634 Distance measuring apparatus using passive AF sensor Nov. 7, 2006
6930297 Image sensing device and distance measuring device using the image sensing device Aug. 16, 2005
6927376 Autofocusing method for telescopes pertaining to surveying equipment Aug. 9, 2005
6909554 Wafer integration of micro-optics Jun. 21, 2005
6884980 Method and apparatus for automatic focusing of an optical device Apr. 26, 2005
6818875 Auto-focusing apparatus Nov. 16, 2004
6812479 Sample positioning method for surface optical diagnostics using video imaging Nov. 2, 2004
6798988 Rangefinder apparatus and camera equipped therewith Sep. 28, 2004
6768540 Phase difference detection method, phase difference detection apparatus, range finding apparatus and imaging apparatus Jul. 27, 2004
6621060 Autofocus feedback positioning system for laser processing Sep. 16, 2003
6567571 Image sensing device capable of outputting image signals by blocks and processing circuit which processes image signals by blocks May. 20, 2003
6477327 Camera having image pick-up device Nov. 5, 2002
6449065 Method for capturing a document image, a scanner using the method and a document image management system using the scanner Sep. 10, 2002
6442345 Distance-measuring device and distance-measuring method Aug. 27, 2002
6438324 Multi-autofocus distance-measuring system with a wide distance-measuring area Aug. 20, 2002
6430370 Distance-measuring apparatus and method for camera Aug. 6, 2002
6396873 Optical device May. 28, 2002
6370333 Multipoint focus detecting apparatus Apr. 9, 2002
6350976 Distance measuring apparatus Feb. 26, 2002

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