Method and apparatus for optical detector with special discrimination

CAFC
  • US 6,596,981 B1
  • Filed: 01/14/2002
  • Issued: 07/22/2003
  • Est. Priority Date: 01/14/2002
  • Status: Active Grant
First Claim
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1. A monolithic optical detector comprising:

  • a first well in a substrate, said first well configured to be exposed to incident light and for generating a first photocurrent as a function of the incident light;

    a second well in the substrate, proximate said first well, said second well configured to be shielded from the incident light and for generating a second photocurrent as a function of the incident light; and

    means, responsive to the first and second photocurrents, for determining an indication of spectral content of the incident light.

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