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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
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 7026602 |
Electromagnetic radiation detectors having a microelectromechanical shutter device |
Apr. 11, 2006 |
| 6974498 |
High-reflectance paint for high-intensity optical applications |
Dec. 13, 2005 |
| 6972403 |
Position encoder |
Dec. 6, 2005 |
| 6965437 |
Scanning unit for an optical position measuring device |
Nov. 15, 2005 |
| 6963063 |
Use of non-interdigitated commutation sensors on Opto-ASICS to achieve low CPR non-standard encoder resolutions |
Nov. 8, 2005 |
| 6927924 |
Imaging optical instrument |
Aug. 9, 2005 |
| 6906315 |
High accuracy miniature grating encoder readhead using fiber optic receiver channels |
Jun. 14, 2005 |
| 6891150 |
Optical scale formed from mold having fixed and movable platens |
May. 10, 2005 |
| 6891147 |
Wavelength-selective diffraction element and an optical head device |
May. 10, 2005 |
| 6888126 |
Coded disc for an optoelectronic displacement or angle measuring device |
May. 3, 2005 |
| 6784409 |
Electronic device with encapsulant of photo-set resin and production process of same |
Aug. 31, 2004 |
| 6750998 |
Electro-mechanical grating device having a continuously controllable diffraction efficiency |
Jun. 15, 2004 |
| 6747607 |
Radiation power limiter |
Jun. 8, 2004 |
| 6737652 |
Coded aperture imaging |
May. 18, 2004 |
| 6717662 |
Arrangement for determining the position of a light source |
Apr. 6, 2004 |
| 6713756 |
Optical encoder and optical rotary encoder |
Mar. 30, 2004 |
| 6703602 |
Optical encoder with at least one lenticular sheet |
Mar. 9, 2004 |
| 6690002 |
Photodetector array and optical communication monitor module using the same |
Feb. 10, 2004 |
| 6683678 |
Optic flow sensor with negative iris photoreceptor array |
Jan. 27, 2004 |
| 6639206 |
Rotary angle sensor for a rotary member |
Oct. 28, 2003 |
| 6635863 |
Optical encoder |
Oct. 21, 2003 |
| 6630623 |
Electrically-conductive grid shield for semiconductors |
Oct. 7, 2003 |
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