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Systems and methods that detect changes in incident optical radiation

  • US 8,174,253 B2
  • Filed: 02/22/2011
  • Issued: 05/08/2012
  • Est. Priority Date: 10/23/2002
  • Status: Active Grant
First Claim
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1. A detector for detecting changes in incident optical radiation, comprising:

  • an insulating substrate having a first surface;

    an array of photoconductive active areas formed on the first surface of the insulating substrate, for detecting the incident optical radiation, each active area formed of a group IV semiconductor and having a first surface; and

    for each active area, a pair of electrical contacts mounted on the first surface of the active area and electrically coupled to opposing ends of said each active area, for providing electrical interface to the active area;

    wherein electrical contacts on first ends of the active areas are independent of electrical contacts on second ends of the active areas.

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