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Passive-type infrared detector with elongated detection areas

  • US 6,414,314 B1
  • Filed: 01/25/2000
  • Issued: 07/02/2002
  • Est. Priority Date: 01/26/1999
  • Status: Expired due to Term
First Claim
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1. A passive-type infrared detector which comprises:

  • an infrared sensor;

    a pair of optical element for defining detection areas opposed substantially 180°

    to each other for the infrared sensor;

    a pair of flat mirrors for directing infrared rays of light from the detection areas towards the infrared sensor.

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