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Class Information
Number: 250/201.1
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controls its own optical systems
Description: Subject matter in which the photocell automatically controls the illumination which falls on the photocell by altering optical means located between a source of illumination and the photocell or by altering the illumination source.










Sub-classes under this class:

Class Number Class Name Patents
250/204 Adjusting optical system to balance brightness in plural paths 323
250/201.2 Automatic focus control 513
250/549 Cathode-ray tube 14
250/205 Controlling light source intensity 1,209
250/548 Controlling web, strand, strip, or sheet 857
250/202 Following a pattern (e.g., line or edge) 260
250/203.1 Following a target (e.g., a star or instrument pointer or other object) other than a pattern 241
250/201.9 Light beam wavefront phase adaptation 318


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8680428 Slit width adjusting device and microscope laser processing apparatus Mar. 25, 2014
8680391 Solar concentrator configuration with improved manufacturability and efficiency Mar. 25, 2014
8669507 Laser scanning device Mar. 11, 2014
8670170 Optical scanning projection system Mar. 11, 2014
8641933 Composite crystal colloidal array with photochromic member Feb. 4, 2014
8628858 Silicone rubber composition for optical sheet, and optical sheet Jan. 14, 2014
8552379 Radiation sensor Oct. 8, 2013
8552286 Method of adaptive solar tracking using variable step size Oct. 8, 2013
8536503 Faceted retro-mirror for line-of-sight jitter sensing Sep. 17, 2013
8515291 Light receiving device and light receiving method Aug. 20, 2013
8493516 Light-emitting module, illumination device, display device, and television receiver Jul. 23, 2013
8455804 Apparatus for adjusting optical mirrors Jun. 4, 2013
8447372 Monitoring a vital parameter of a patient with "in-situ" modulation scheme to avoid interference May. 21, 2013
8445824 Lighting device May. 21, 2013
8422007 Optical measurement device with reduced contact area Apr. 16, 2013
8399824 Beam power with multipoint broadcast Mar. 19, 2013
8338695 Iterative adaptive solar tracking having variable step size Dec. 25, 2012
8331001 Welding filter device and control method thereof Dec. 11, 2012
8330134 Optical fault monitoring Dec. 11, 2012
8330087 Spectral imaging system with dynamic optical correction Dec. 11, 2012
8254010 Imaging of a plurality of types of images based on light of a plurality of wavelength bands Aug. 28, 2012
8238968 Camera sensor usage as luminance meter for power saving in mobile portable devices Aug. 7, 2012
8181270 Anti-glare protection device May. 22, 2012
8168930 Beam power for local receivers May. 1, 2012
8164040 Saturation optics Apr. 24, 2012
8164037 Co-boresighted dual-mode SAL/IR seeker including a SAL spreader Apr. 24, 2012
8158918 Imaging apparatus, control method thereof, and computer-readable storage medium storing program Apr. 17, 2012
8158916 Color controlled light source and a method for controlling color generation in a light source Apr. 17, 2012
8143561 MEMS scan controller generating clock frequency and control method thereof Mar. 27, 2012
8139281 Tunable optical filter apparatus and method Mar. 20, 2012
8119974 Microprocessor based automatically dimmable eye protection device with interruption prevention Feb. 21, 2012
8101895 Measurement method, measurement apparatus, and method of manufacturing optical system Jan. 24, 2012
8093540 Method of focus and automatic focusing apparatus and detecting module thereof Jan. 10, 2012
8058608 Device for imaging scenes with very large ranges of intensity Nov. 15, 2011
8058609 Beam power with multipoint broadcast Nov. 15, 2011
8049151 Digital type anti-glare device using touch and method of controlling the same Nov. 1, 2011
8026466 Beam power with receiver impingement detection Sep. 27, 2011
7994467 Optical cavity emitter arrangements with spectral alignment and methods therefor Aug. 9, 2011
7982662 Scanning array for obstacle detection and collision avoidance Jul. 19, 2011
7973838 Active mask for electronic imaging system Jul. 5, 2011
7964832 Evaluation device of optical writing device and evaluation method thereof Jun. 21, 2011
7956311 Spectroscopic device Jun. 7, 2011
7952056 Extended dynamic range light detection systems and methods May. 31, 2011
7916204 Multiple microlens system for image sensors or display Mar. 29, 2011
7880888 Photoelectric sensor for sensing a target Feb. 1, 2011
7872740 Motion-compensated light-emitting apparatus Jan. 18, 2011
7868278 Eye-protection device having dual high voltage switching Jan. 11, 2011
7845556 Optical encoder with contamination detection Dec. 7, 2010
7847225 Optical neural network Dec. 7, 2010
7834302 Eye safety protection from high power laser light Nov. 16, 2010

1 2 3 4 5 6 7










 
 
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