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Infrared video camera system with uncooled focal plane array and radiation shield

  • US 6,144,031 A
  • Filed: 04/21/1997
  • Issued: 11/07/2000
  • Est. Priority Date: 04/21/1997
  • Status: Expired due to Term
First Claim
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1. An uncooled infrared sensor assembly comprising:

  • (a) an uncooled infrared sensor having an active surface for providing an analog video signal in response to infrared radiation falling thereon;

    (b) a radiation shielding chamber formed to surround the uncooled infrared sensor for shielding radiation from said active surface, the chamber providing continuous walls for shielding the sensor and a shield aperture for defining a field of view of said active surface thereby limiting the radiation entering the chamber to a prescribed solid cone angle defined by the shield aperture; and

    ,(c) wherein the chamber walls provide a substantially uniform non-varying infrared radiation scene to the active surface for all angles not included in the prescribed solid cone angle.

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