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Class Information
Number: 250/226
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Color (e.g., filter or spectroscope)
Description: Subject matter having optical means for acting unequally upon different frequencies of radiation in the optical path of light from a light source to the photocell.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5543920 |
System and method for sensing color and preventing use of unauthorized color formulation software |
Aug. 6, 1996 |
| 5538142 |
Sorting apparatus |
Jul. 23, 1996 |
| 5536936 |
Spectroscopic ellipsometer modulated by an external excitation |
Jul. 16, 1996 |
| 5537212 |
Method and apparatus for sensing the color of an object |
Jul. 16, 1996 |
| 5528295 |
Color television camera using tunable optical filters |
Jun. 18, 1996 |
| 5519205 |
Color electronic camera including photosensor array having binary diffractive lens elements |
May. 21, 1996 |
| 5519210 |
Apparatus and a process for recording photometric data that is positioned in succession or in adjacent fashion on a page-like or strip-like print |
May. 21, 1996 |
| 5519208 |
Infrared aided method and apparatus for venous examination |
May. 21, 1996 |
| 5515169 |
Spectral wavelength discrimination system and method for using |
May. 7, 1996 |
| 5514875 |
Linear bidirectional optocoupler |
May. 7, 1996 |
| 5510611 |
Particle component analyzing apparatus, and equivalent particle diameter measuring method using same |
Apr. 23, 1996 |
| 5508512 |
Sorting machine using dual frequency optical detectors |
Apr. 16, 1996 |
| 5504608 |
Adjustable filter for tuning multimode optical signals |
Apr. 2, 1996 |
| 5502299 |
Current ratio circuit for multi-color imaging |
Mar. 26, 1996 |
| 5498879 |
Apparatus for the optical recognition of documents by photoelectric elements having vision angles with different length and width |
Mar. 12, 1996 |
| 5498867 |
Wavelength-division multiplex digital optical position sensor |
Mar. 12, 1996 |
| 5495101 |
Enhancement for broadband optical limiter with holographic grating |
Feb. 27, 1996 |
| 5493404 |
Method and apparatus for sensing color of articles |
Feb. 20, 1996 |
| 5487472 |
Color sorter for sorting out moldy pulse |
Jan. 30, 1996 |
| 5486693 |
Detection of turbid contaminants in containers by detecting scattered radiant energy |
Jan. 23, 1996 |
| 5483057 |
Glass color sensor unit |
Jan. 9, 1996 |
| 5483053 |
Variable resolution color image scanner having an exposure delay between successive linear photosensors detecting different colors |
Jan. 9, 1996 |
| 5481383 |
Color image reader |
Jan. 2, 1996 |
| 5477326 |
Spectrophotometer arrangement with multi-detector readhead |
Dec. 19, 1995 |
| 5475212 |
Apparatus for imaging multiple radiation beams |
Dec. 12, 1995 |
| 5471311 |
Information system for monitoring products in sorting apparatus |
Nov. 28, 1995 |
| 5471052 |
Color sensor system using a secondary light receiver |
Nov. 28, 1995 |
| 5469265 |
Method and apparatus for an optoelectronic smart structure interface with wavelength demodulation of laser sensors |
Nov. 21, 1995 |
| 5455422 |
Multiple coat measurement and control apparatus and method |
Oct. 3, 1995 |
| 5450207 |
Method and apparatus for calibrating a laser wavelength control mechanism |
Sep. 12, 1995 |
| 5449413 |
UV/IR reflecting solar cell cover |
Sep. 12, 1995 |
| 5444236 |
Multicolor radiation detector method and apparatus |
Aug. 22, 1995 |
| 5440141 |
Method of measuring a thickness of a multilayered sample using ultraviolet light and light with wavelengths longer than ultraviolet |
Aug. 8, 1995 |
| 5432334 |
Method and apparatus for imaging multiple radiation beams |
Jul. 11, 1995 |
| 5432545 |
Color detection and separation method |
Jul. 11, 1995 |
| 5428697 |
Device for the optical processing of electrical signals |
Jun. 27, 1995 |
| 5426290 |
Color linear image sensing device |
Jun. 20, 1995 |
| 5426297 |
Multiplexed Bragg grating sensors |
Jun. 20, 1995 |
| 5426294 |
Glare sensor for a vehicle |
Jun. 20, 1995 |
| 5422474 |
Methods for document illumination |
Jun. 6, 1995 |
| 5416318 |
Combined headlamp and climate control sensor having a light diffuser and a light modulator |
May. 16, 1995 |
| 5408085 |
Document imaging system with human-eye response photoptic filter means |
Apr. 18, 1995 |
| 5406067 |
Electrically adjusted mosaic filter for use as an optical sensor in an optical measurement instrument |
Apr. 11, 1995 |
| 5406066 |
Method and apparatus for correcting color registration error |
Apr. 11, 1995 |
| 5404005 |
Solid state imaging device and method of manufacturing same |
Apr. 4, 1995 |
| 5401958 |
Optical temperature compensation of spectral modulation sensors by spectrographic interrogation having a dispersive element |
Mar. 28, 1995 |
| 5401959 |
Optical temperature compensation of spectral modulation sensors by ratiometric interrogation having dichroic filters |
Mar. 28, 1995 |
| 5401954 |
Product ripeness discrimination system and method therefor with area measurement |
Mar. 28, 1995 |
| 5402001 |
Method of checking for foreign matter on a substrate with light of maximum reflectivity for that substrate |
Mar. 28, 1995 |
| 5389781 |
Structure and method usable for differentiating a plant from soil in a field |
Feb. 14, 1995 |
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