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Browse by Category: Main > Electrical & Energy
Class Information
Number: 250/208.4
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controlled circuit > Plural photosensitive nonimage detecting elements > Used to switch an electrical circuit or device on or off
Description: Subject matter in which plural photocells are, by disclosure, used to generate signals which are used to switch all or just part of an electrical circuit on or off.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8692178 Photosensitive control system, and method of operating thereof Apr. 8, 2014
8655125 High voltage photo switch package module Feb. 18, 2014
8581169 System and method for data transmission between an intelligent electronic device and a remote device Nov. 12, 2013
8569709 Radiographic imaging apparatus and methods including stable power down Oct. 29, 2013
8481911 System and method for connecting electrical devices using fiber optic serial communication Jul. 9, 2013
8435823 Solid-state imaging device and method of manufacturing the same May. 7, 2013
8111433 Image reading device capably scanning an image formed on a document in consideration of deterioration of the reference member Feb. 7, 2012
8058605 Optoelectronic sensor for safeguarding a hazardous area Nov. 15, 2011
8004725 Device and method for scanning a document Aug. 23, 2011
7973273 Light barrier with feedback control Jul. 5, 2011
7897905 System and method for connecting electrical devices using fiber optic serial communication Mar. 1, 2011
7732747 Tool with contactless switch Jun. 8, 2010
7564020 System and method for laser detector with marker Jul. 21, 2009
7479624 Laser light actuation system Jan. 20, 2009
7415338 Apparatus for controlling auxiliary equipment of vehicle Aug. 19, 2008
7388189 System and method for connecting electrical devices using fiber optic serial communication Jun. 17, 2008
7335871 Low power switching for antenna reconfiguration Feb. 26, 2008
7214922 Semiconductor photosensor device and information apparatus with sensitivity region for wide dynamic range May. 8, 2007
7164110 Diode-based light sensors and methods Jan. 16, 2007
7138903 Lock module using colored light rays to identify the application of an accurate key Nov. 21, 2006
7116459 Field diode detection of excess light conditions for spatial light modulator Oct. 3, 2006
7079189 Image sensing apparatus Jul. 18, 2006
6927924 Imaging optical instrument Aug. 9, 2005
6816647 Compact fiber pigtailed terahertz modules Nov. 9, 2004
6774396 Thin film transistor type optical sensor Aug. 10, 2004
6614013 Illumination management system Sep. 2, 2003
6366365 Waveguide array-based image sensor for document scanner scan head Apr. 2, 2002
6118115 Photoelectric conversion apparatus Sep. 12, 2000
6114684 Laser listening device detector Sep. 5, 2000
5998779 Photoelectric conversion apparatus Dec. 7, 1999
5963135 Proximity detecting device Oct. 5, 1999
5914664 Optically sensing auxiliary switch Jun. 22, 1999
5894175 Photo-control apparatus and circuit Apr. 13, 1999
5793906 Switching using optical tunnels Aug. 11, 1998
5646596 Interactive window display Jul. 8, 1997
5563406 Optical sensor and a method of operating an optical sensor having an electronic switching circuit Oct. 8, 1996
5555136 Interior rearview mirror for motorized vehicles Sep. 10, 1996
5522167 Switch apparatus Jun. 4, 1996
5401953 Optically-switched submillimeter-wave oscillator and radiator having a switch-to-switch propagation delay Mar. 28, 1995
5382791 Dual mode switch for handicapped Jan. 17, 1995
5347418 Fuse blowout detector circuit Sep. 13, 1994
5341133 Keyboard having touch sensor keys for conveying information electronically Aug. 23, 1994
5313056 Electronically controlled frequency agile impulse device May. 17, 1994
5281808 Device for the non-contact control of a sanitary fitting Jan. 25, 1994
5256913 Low power optoelectronic device and method Oct. 26, 1993
5223728 Optical switch integrated circuit Jun. 29, 1993
5214275 Optically controlled microwave switch and signal switching system May. 25, 1993
5189296 Optical receiver having a low capacitance integrated photodetector Feb. 23, 1993
5179269 Bar code reader having an automatically actuated visible light laser beam Jan. 12, 1993
5164768 Method and apparatus for converting a conventional copier into an electronic printer Nov. 17, 1992

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