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Infrared detection system

  • US 4,225,786 A
  • Filed: 09/15/1978
  • Issued: 09/30/1980
  • Est. Priority Date: 09/15/1978
  • Status: Expired due to Term
First Claim
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1. In an infrared radiation-sensitive detector comprising:

  • (a) a plurality of infrared radiation-sensitive elements arranged to form an elongated array, each of said elements comprising first and second spaced electrodes between which a pyroelectric material is positioned, said elements being operative to produce a voltage proportional to the rate of change of infrared radiation incident thereon; and

    (b) means connecting said elements electrically in parallel;

    the improvement whereinsaid pyroelectric material of each element is polarized to a polarity opposite that to which the pyroelectric material of adjacent elements in said array is polarized, whereby the voltages produced by adjacent elements which are subjected to the same change in incident radiation are substantially equal in amplitude and opposite in polarity.

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