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AssigneeXerox Corporation
InventorsJagdish C. Tandon, Lingappa K. Mestha, Fred F. Hubble, III
Estimating the term…
A color spectrophotometer incorporating a low cost commercial imaging chip, which normally forms part of a document imaging bar used for imaging documents in scanners, etc., having multiple photo-sites with three different rows of color filters. Each chip is mounted on the optical axis of an imaging lens system, in the image plane of that lens system, to image the reflected illumination from an illuminated color test target area on the chip. The optical axis of the imaging lens system is oriented at 45° to the illuminated color test patches, and the photodetector chip is physically mounted perpendicular to the plane of the illuminated color test patches. Respective photo-sensor chips and associated 1:1 optics may be mounted on opposing sides of the spectrophotometer physically oriented at 90° to the test target area plane receiving the reflected light from the test target optically oriented at 45° to the illuminated test target.
A low cost broad color spectrum spectrophotometer including an illumination source mounted to illuminate a color test target area, an imaging lens system having an optical axis and an image plane, and at least one low cost photodetector chip arranged to receive at least a portion of the light reflected from said illuminated color test target area through said imaging lens system along said optical axis thereof, said photodetector chip being mounted in said image plane of said imaging lens system, said photodetector chip being a component for a commercial colored documents imaging bar, said photodetector chip having at least three rows of small and closely spaced multiple photo-sites with three different respective color filters and electrical outputs, of which at least a portion of each of said three rows of multiple photo-sites are simultaneously exposed to said reflected light from said illuminated color test target area by said imaging lens system so that said photodetector chip can provide at least three different spectral responses with at least three different electrical output signals:
A low cost broad color spectrum spectrophotometer including an illumination source mounted to illuminate a color test target area, an imaging lens system having an optical axis and an image plane, and at least one low cost photodetector chip arranged to receive at least a portion of the light reflected from said illuminated color test target area through said imaging lens system along said optical axis thereof, said photodetector chip being mounted in said image plane of said imaging lens system, said photodetector chip being a component for a commercial colored documents imaging bar, said photodetector chip having at least three rows of small and closely spaced multiple photo-sites with three different respective color filters and electrical outputs, of which at least a portion of each of said three rows of multiple photo-sites are simultaneously exposed to said reflected light from said illuminated color test target area by said imaging lens system so that said photodetector chip can provide at least three different spectral responses with at least three different electrical output signals;
A low cost broad color spectrum spectrophotometer including an illumination source mounted to illuminate a color test target area, an imaging lens system having an optical axis and an image plane, and at least one low cost photodetector chip arranged to receive at least a portion of the light reflected from said illuminated color test target area through said imaging lens system along said optical axis thereof, said photodetector chip being mounted in said image plane of said imaging lens system, said photodetector chip being a component for a commercial colored documents imaging bar, said photodetector chip having at least three rows of small and closely spaced multiple photo-sites with three different respective color filters and electrical outputs, of which at least a portion of each of said three rows of multiple photo-sites are simultaneously exposed to said reflected light from said illuminated color test target area by said imaging lens system so that said photodetector chip can provide at least three different spectral responses with at least three different electrical output signals;
Dependencies are inferred from the claim text.