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Infrared clinical thermometer

  • US 4,895,164 A
  • Filed: 09/15/1988
  • Issued: 01/23/1990
  • Est. Priority Date: 09/15/1988
  • Status: Expired due to Fees
First Claim
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1. An apparatus for measuring a temperature of an infrared radiation emissive target comprising:

  • a housing having at least one infrared radiation receiving port;

    an infrared radiation sensor means enclosed in said housing and further comprising a wave guide means having one end accessible to infrared radiation, an infrared radiation detector means positioned to receive infrared radiation from said target as directed by said wave guide means, and further to generate a signal corresponding to a quantity of infrared radiation detected, a detector temperature sensor means positioned to measure a temperature of said infrared radiation detector means and further to generate a signal corresponding to said temperature of the infrared radiation detector means, said wave guide, and an isothermic block means, wherein said infrared radiation detector means and said detector temperature sensor means are held at or about an ambient temperature by said isothermic block means, a signal processing means for receiving said infrared radiation detector means signal and said detector temperature sensor means signal, and generating an output signal corresponding to the temperature of said infrared radiation emissive target.

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