Color sensor system using a secondary light receiver

Details Color sensor system using a secondary light receiver Color sensor system using a secondary light receiver

1993-10-25

1995-11-28

Sikes, William L.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250214C, 25022711, 25022725, H01J 516, H01J 4014

Patent

active

054710529

ABSTRACT:
A system for photoelectrically sensing the color of an object includes two or more light sources having different characteristic ranges of chromaticity and one primary photosensitive element which receives light from the light sources after it has reflected off of the target object and a secondary photosensitive element which receives light from the light sources prior to reflection off of the target. A divider element divides the output of the primary photosensitive element by the output of the secondary photosensitive element to automatically align the signal representative of the color of the object for variation in the light power output of the light sources. In an alternate embodiment, the output of the secondary photosensitive receiver is used as a closed loop feedback signal to regulate the light power output of the light sources.

REFERENCES:
patent: 4783591 (1988-11-01), Sullivan
patent: 4810873 (1989-03-01), Ammann et al.
patent: 4917500 (1990-04-01), Lugos
patent: 4937441 (1990-06-01), Ishizawa et al.
patent: 4940889 (1990-07-01), Ono et al.
patent: 4987298 (1991-01-01), Inagaki
patent: 5008525 (1991-04-01), Petronio
patent: 5015839 (1991-05-01), Tanikoshi
patent: 5019704 (1991-05-01), Zimmermann et al.
patent: 5021645 (1991-06-01), Satula et al.
patent: 5029277 (1991-07-01), Kane
patent: 5039191 (1991-08-01), Myszka
patent: 5150174 (1992-09-01), Ryczek et al.
patent: 5233408 (1993-08-01), Satula
patent: 5336900 (1994-08-01), Peters et al.

Affiliated with

Also associated with

Rating

Color sensor system using a secondary light receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color sensor system using a secondary light receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color sensor system using a secondary light receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2015191