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Class Information
Number: 250/237R
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Hoods, grating, baffles, diaphragms, masks

Sub-classes under this class:

Class Number Class Name Patents
250/237G Gratings (moire fringes) 1,046

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

Patent Number Title Of Patent Date Issued
8530826 Automated shutter for dark acclimating samples Sep. 10, 2013
8519325 Optical radiation concentrator Aug. 27, 2013
8507841 Optical element and method for producing the same Aug. 13, 2013
8507862 Low profile light collimator micro baffle and method Aug. 13, 2013
8466407 Stray light baffles for a conformal dome with arch corrector optics Jun. 18, 2013
8384009 Optical member with high refractive index layers, solid-state imaging device having an optical member with high refractive index layers, and manufacturing method thereof Feb. 26, 2013
8368004 Reflection plate for optical encoder and manufacturing method thereof, and optical encoder Feb. 5, 2013
8309903 Optical device, method for producing master for use in producing optical device, and photoelectric conversion apparatus Nov. 13, 2012
8243345 Scan unit having EMI noise blocking unit and image forming apparatus having the scan unit Aug. 14, 2012
8164046 Illumination system for illuminating a mask in a microlithographic projection exposure apparatus Apr. 24, 2012
8158398 Microelectronic sensor device Apr. 17, 2012
8027073 Image forming apparatus with laser scanning device and method of aligning the laser scanning device Sep. 27, 2011
8027039 Subwavelength resolution optical microscopy Sep. 27, 2011
8008614 Device for detecting emission light of micro-object having means for suppressing reflected and scattered excitation light Aug. 30, 2011
7999217 Image-capturing element including photoelectric conversion cells that pupil-divide object light and output a ranging signal Aug. 16, 2011
7977619 Detector array for use in a laser imaging apparatus Jul. 12, 2011
7965936 4D light field cameras Jun. 21, 2011
7923675 Projection system having avirtual mask Apr. 12, 2011
7868285 Array-type light receiving device and light collection method Jan. 11, 2011
7792423 4D light field cameras Sep. 7, 2010
7652246 Optical pickup device and optical disk device Jan. 26, 2010
7633045 Optical device, method for producing master for use in producing optical device, and photoelectric conversion apparatus Dec. 15, 2009
7609439 Mask overlay for infrared target assembly Oct. 27, 2009
7586086 Scanning imaging device for image-substraction confocal microscopy Sep. 8, 2009
7569801 Optical head, optical reproducing apparatus, and optical recording and reproducing apparatus Aug. 4, 2009
7526230 Mark sensing device, turnable body driving device and image forming apparatus Apr. 28, 2009
7504648 Method and apparatus for determining focus of a scanning system Mar. 17, 2009
7491959 Defect inspection apparatus Feb. 17, 2009
7482575 Rotary optical encoder employing multiple subencoders with common reticle substrate Jan. 27, 2009
7476863 Device limiting the appearance of decoding artefacts for a gamma camera with a coded mask Jan. 13, 2009
7471454 Dynamic optical tag communicator and system using corner cube modulating retroreflector Dec. 30, 2008
7435945 Optical configuration for imaging-type optical encoders Oct. 14, 2008
7432497 Absolute linear encoder Oct. 7, 2008
7420156 Metal nanowire based bandpass filter arrays in the optical frequency range Sep. 2, 2008
7417748 Method and apparatus for measuring dimensional changes in transparent substrates Aug. 26, 2008
7405392 Optical rotary encoder Jul. 29, 2008
7402828 Position detector that prevents erroneous detection of a scale and liquid ejecting apparatus incorporating the same Jul. 22, 2008
7345273 Integrated optical encoder Mar. 18, 2008
7329858 Optical encoder and electronic equipment having same Feb. 12, 2008
7312435 Determination of a physical state of an optical device Dec. 25, 2007
7297971 Alignment systems and methods for lithographic systems Nov. 20, 2007
7265338 Photoelectric encoder using an incoherent semiconductor light source Sep. 4, 2007
7193204 Multi-track optical encoder employing beam divider Mar. 20, 2007
7186969 Optical configuration for imaging-type optical encoders Mar. 6, 2007
7176440 Method and apparatus for detecting objects using structured light patterns Feb. 13, 2007
7126696 Interferometric miniature grating encoder readhead using fiber optic receiver channels Oct. 24, 2006
7115848 Methods, systems and computer program products for calibration of microscopy imaging devices Oct. 3, 2006
7091475 Miniature 2-dimensional encoder readhead using fiber optic receiver channels Aug. 15, 2006
7053362 Absolute position miniature grating encoder readhead using fiber optic receiver channels May. 30, 2006
7034948 Displacement pickup Apr. 25, 2006

1 2 3 4 5 6 7

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