Patent · US Expired

Tristimulus colorimeter having integral dye filters

US7593105B2 · kind B2 · utility

0Cited by
46References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 16, 2005
Grant dateSep 22, 2009
Priority date—
Expiry dateMay 12, 2026

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01J2003/1213
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.