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Thermal detector with bolometric effect amplification

  • US 6,316,770 B1
  • Filed: 06/28/1999
  • Issued: 11/13/2001
  • Est. Priority Date: 07/06/1998
  • Status: Expired due to Term
First Claim
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1. Thermal detector for measuring heat from a scene, characterized in that it comprises:

  • a resistive heat amplifying element (4;

    22, 24) able to undergo a heating from said scene and provided with electrical biasing means (6, 8;

    26, 28) for causing the element to amplify said heating, a thermometer (12;

    34, 36;

    40, 42, 44, 46;

    51, 52, 54;

    60, 62) thermally coupled to the resistive heat amplifying element and able to convert a temperature variation undergone by said thermometer into an electric signal, said thermometer receiving and measuring amplified heat from said scene via said resistive heat amplifying element, said heat amplifying element amplifying heat input to said thermometer proportionately to heat from the scene, and means (18) for reading said electric signal.

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