Tristimulus colorimeter having integral dye filters
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United States of America Patent
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Sep 22, 2009
Grant Date -
Jun 8, 2006
app pub date -
Nov 16, 2005
filing date -
Nov 17, 2004
priority date (Note) -
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Abstract
A tristimulus colorimeter on a single semiconductor chip having at least three detectors, each detector being coated by colorant filters, each filter having at least one layer and at least one filter having a double layer is provided. The colorimeter determines CIE tristimulus values of an incident light from inputs to the filters and detectors. Colorimeters having integral dye filters may be constructed on a single silicon chip embodying all the detectors and electronics, coated over each detector by a deposited filter layer. Colorants may be directly deposited on the detectors, rather than using a plastic substrate for a filter.
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