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Class Information
Number: 250/578.1
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Plural light sources or optical paths
Description: Subject matter in which the optical or pre-photocell system includes more than one light source or more than one optical path from one or more light sources to the photocell(s).

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8658995 Remote control systems that can distinguish stray light sources Feb. 25, 2014
8629413 Microscopy with adaptive optics Jan. 14, 2014
8598559 Systems and methods for beam splitting for imaging Dec. 3, 2013
8575582 Method for the optical monitoring of a monitored zone and light sensor Nov. 5, 2013
8289178 Electro/optical smoke analyzer Oct. 16, 2012
8217378 Luminescent image reading device and image forming apparatus Jul. 10, 2012
8094312 Apparatus and methods for analyzing samples Jan. 10, 2012
7983817 Method and arrangement for obtaining information about vehicle occupants Jul. 19, 2011
7943889 Apparatus for improving detection efficiency of multiphoton microscopy systems by focus compensation, pupil image division, and parallel pupil rearrangement May. 17, 2011
7746239 Light scattering type smoke detector Jun. 29, 2010
7728317 Optical heterodyne sampling device having probe and pump beams Jun. 1, 2010
7693358 Fiber optic distributed sensor apparatus Apr. 6, 2010
7655937 Remote control systems that can distinguish stray light sources Feb. 2, 2010
7502538 System to monitor a structure within an outer casing of a gas turbine engine Mar. 10, 2009
7479625 Sensing photons from object in channels Jan. 20, 2009
7402743 Free-space human interface for interactive music, full-body musical instrument, and immersive media controller Jul. 22, 2008
7358476 Sensing photons from objects in channels Apr. 15, 2008
7326948 Beam modifying device, lithographic projection apparatus, method of treating a beam, and device manufacturing method Feb. 5, 2008
7323680 Optical deflection probe and optical deflection probe device Jan. 29, 2008
7315039 Confocal microspectroscope Jan. 1, 2008
7291824 Photosensing throughout energy range and in subranges Nov. 6, 2007
7276720 Apparatus and methods for analyzing samples Oct. 2, 2007
7221288 Method and apparatus for using optical signal time-of-flight information to facilitate obstacle detection May. 22, 2007
7197381 Navigational system and method utilizing sources of pulsed celestial radiation Mar. 27, 2007
7080940 In situ optical surface temperature measuring techniques and devices Jul. 25, 2006
6946650 Sensor Sep. 20, 2005
6891180 Camera system for editing documents May. 10, 2005
6862090 Coaxial illumination system Mar. 1, 2005
6858832 Photoelectric sensor having time changing means Feb. 22, 2005
6809661 Keypad device Oct. 26, 2004
6737635 Apparatus for combining light and confocal scanning microscope May. 18, 2004
6572265 In situ optical surface temperature measuring techniques and devices Jun. 3, 2003
6556317 Image reading apparatus and image reading system Apr. 29, 2003
6417953 Laser optical system Jul. 9, 2002
6369918 Apparatus, method, and computer program to reduce distortion of scanner restarts Apr. 9, 2002
6307648 Line source unit and image input apparatus Oct. 23, 2001
6239860 Adjustment of vertical regist shift between pages, colors or lines in a multiple beam recording system May. 29, 2001
6195083 Active joystick with optical positions sensor Feb. 27, 2001
6055095 Microscope with infrared imaging Apr. 25, 2000
6055072 Image reading apparatus and image reading system Apr. 25, 2000
6017148 Device for optically measuring a cryogenic temperature Jan. 25, 2000
6011256 Light beam scanning device and control method therefor Jan. 4, 2000
5861992 Microlensing for multiple emitter laser diodes Jan. 19, 1999
5859422 Apparatus and method for flexible gripping of objects Jan. 12, 1999
5834759 Tracking device having emitter groups with different emitting directions Nov. 10, 1998
5825552 Beamsplitter/staggerer for multi-beam laser printers Oct. 20, 1998
5768027 Coma aberration correcting method and apparatus in optical pickup Jun. 16, 1998
5753906 Color separation using multiple point narrow band illumination from N-colors of light sources May. 19, 1998
5747822 Method and apparatus for optically digitizing a three-dimensional object May. 5, 1998
5742058 Device and a method of digitalization for photosensitive detectors and a method of reading a matrix of photonic detectors Apr. 21, 1998

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