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Class Information
Number: 250/200
Name: Radiant energy > Photocells; circuits and apparatus
Description: Subject matter which includes a photocell.










Sub-classes under this class:

Class Number Class Name Patents
250/215 Combined with diverse-type device 130
250/554 Flame light source 149
250/239 Housings (in addition to cell casing) 1,206
250/550 Interference pattern analysis (e.g., spatial filtering or holography) 139
250/216 Optical or pre-photocell system 1,511
250/206 Photocell controlled circuit 185
250/201.1 Photocell controls its own optical systems 306
250/551 Signal isolator 732
250/552 Solid state light source 130
250/238 Temperature control of photocell 139
250/559.01 With circuit for evaluating a web, strand, strip, or sheet 176


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8711125 Coordinate locating method and apparatus Apr. 29, 2014
8692198 Photosensitive imaging devices and associated methods Apr. 8, 2014
8687099 Imaging device, imaging method, and electronic device Apr. 1, 2014
8680391 Solar concentrator configuration with improved manufacturability and efficiency Mar. 25, 2014
8648947 Image-pickup system and method of controlling same Feb. 11, 2014
8643592 Light sensing circuit, backlight control apparatus having the same, and liquid crystal display device having the same Feb. 4, 2014
8643574 Imaging device Feb. 4, 2014
8592672 Foldable solar energy collector Nov. 26, 2013
8587709 High-speed charge-transfer photodiode, a lock-in pixel, and a solid-state imaging device Nov. 19, 2013
8581209 Fluorescent monitoring of microcapsule oxidation Nov. 12, 2013
8581572 Photovoltaic test apparatus Nov. 12, 2013
8575877 Solar-powered window covering automation system Nov. 5, 2013
8563930 System and method of modulating electrical signals using photoconductive wide bandgap semiconductors as variable resistors Oct. 22, 2013
8558103 Switchable solar cell devices Oct. 15, 2013
8558152 Lens concentrator system for semi-active laser target designation Oct. 15, 2013
8558205 Light detection device and sheet processing apparatus including the same Oct. 15, 2013
8519325 Optical radiation concentrator Aug. 27, 2013
8482646 Image sensing device and camera Jul. 9, 2013
8482524 Input device for an electronic device Jul. 9, 2013
8463143 Amplifier with offset compensator and optical receiver implemented with the same Jun. 11, 2013
8455755 Concentrated photovoltaic and thermal solar energy collector Jun. 4, 2013
8434359 Sensor arrangement for detecting ambient conditions May. 7, 2013
8424764 Photoelectric conversion device, method for driving photoelectric conversion device, radiation imaging device, and method for driving radiation imaging device Apr. 23, 2013
8411183 Solid-state imaging device and driving method as well as electronic appartus Apr. 2, 2013
8401307 Determining celestial coordinates for an image Mar. 19, 2013
8389291 System and method for the measurement of multiple fluorescence emissions in a flow cytometry system Mar. 5, 2013
8378661 Solar simulator Feb. 19, 2013
8363042 Photon transfer curve test time reduction Jan. 29, 2013
8301409 Photon imaging system for detecting defects in photovoltaic devices, and method thereof Oct. 30, 2012
8228182 Self-testing notification appliance Jul. 24, 2012
8212141 Organic semiconductor radiation/light sensor and radiation/light detector Jul. 3, 2012
8207481 Projectile guidance system including a compact semi-active laser seeker Jun. 26, 2012
8174281 Method and circuit for tracking maximum power of a photo-voltaic array May. 8, 2012
8164037 Co-boresighted dual-mode SAL/IR seeker including a SAL spreader Apr. 24, 2012
8158398 Microelectronic sensor device Apr. 17, 2012
8139281 Tunable optical filter apparatus and method Mar. 20, 2012
8138782 Photovoltaic cell solar simulator Mar. 20, 2012
8009245 Backlight, backlight assembly, liquid crystal display having the same and method thereof Aug. 30, 2011
7982662 Scanning array for obstacle detection and collision avoidance Jul. 19, 2011
7961181 Light sensing circuit, backlight control apparatus having the same, and liquid crystal display device having the same Jun. 14, 2011
7936427 Optical sensor for detecting peripheral light and liquid crystal display device using the same May. 3, 2011
7920751 Adaptive gradient weighting technique for detector bad cell correction Apr. 5, 2011
7893916 Luminance compensation device and method thereof for backlight module Feb. 22, 2011
7873490 Solar access measurement device Jan. 18, 2011
7676342 Sensor assembly, digital serial bus and protocol, sensor network, and lithographic apparatus and system Mar. 9, 2010
7675099 Image sensor and method of forming the same Mar. 9, 2010
7592760 Lithographic apparatus and device manufacturing method Sep. 22, 2009
7560674 CMOS image sensor and method for manufacturing the same Jul. 14, 2009
7557365 Structures and methods for coupling energy from an electromagnetic wave Jul. 7, 2009
7557384 Semiconductor light emitting device and semiconductor light emitting unit Jul. 7, 2009

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