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Infrared detection

  • US 4,591,717 A
  • Filed: 04/27/1984
  • Issued: 05/27/1986
  • Est. Priority Date: 05/03/1983
  • Status: Expired due to Fees
First Claim
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1. Infrared detector including a vacuum tube containing an infrared sensitive layer comprising:

  • a plurality of densely packaged, metallic, electrically conductive needles; and

    a substrate for supporting said needles so that said needles extend perpendicularly to the substrate, the diameter and the distance of the needles being smaller by about one order of magnitude or more than the wave length of the radiation to be detected.

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