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Multi-wavelength band infrared detector

  • US 4,948,976 A
  • Filed: 02/09/1989
  • Issued: 08/14/1990
  • Est. Priority Date: 02/09/1989
  • Status: Expired due to Fees
First Claim
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1. An infrared detector comprising a first thin film detector layer of PbSe responsive to infrared radiation in a first wavelength band, a second thin film detector layer of PbS overlying said first detector layer and responsive to infrared radiation in a second wavelength band and transparent to infrared radiation in said first wavelength band and contacts connected to each of said detector layers.

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