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Probe assembly of infrared thermometer

  • US 7,275,867 B2
  • Filed: 12/01/2005
  • Issued: 10/02/2007
  • Est. Priority Date: 12/01/2005
  • Status: Expired due to Fees
First Claim
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1. A probe assembly of an infrared thermometer detecting infrared rays emitted by a thermal radiation source so as to measure a surface temperature of the thermal radiation source, comprising:

  • a taper plastic tube including a radiation collection end toward the thermal radiation source and allowing the infrared rays to go through;

    a conductive shell placed in the plastic tube and including a first open end adjacent to the radiation collection end;

    an infrared radiation sensor placed in the first open end of the conductive shell and including a hot junction facing the thermal radiation source and a cold junction facing a side opposite to the radiation collection end;

    a first adiabatic ring placed between the plastic tube and the conductive shell and preventing heat of the plastic tube from being directly conducted to the conductive shell;

    a second adiabatic ring placed between the conductive shell and the infrared radiation sensor; and

    an adiabatic supporter placed in the conductive shell and including a first end against the surface of the infrared radiation sensor adjacent to the cold junction, wherein the first end of the adiabatic supporter shows a cross shape and several leads go through diagonal gaps of the cross shape.

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