Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1980-12-08
1984-03-20
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
250340, 356 44, 374159, 374131, G01J 500, G01J 900, G01K 1120
Patent
active
044377720
ABSTRACT:
A thermometry system utilizes the thermally sensitive time dependent emission properties of luminescent materials. In one embodiment the system includes a probe constructed with an optic fiber bundle for conducting light both toward and away from the temperature sensitive luminescent element located at one end of the optic fiber bundle, a source for transient and/or modulated excitation of the temperature sensitive element, and a light responsive detection element located at the output end of the optic fiber bundle for detecting the transient and/or modulated light emissions by the luminescent temperature sensitive element. The emission signal received by the light responsive detector can be analyzed in a well defined manner to determine the temperature of the luminescent element and of any materials in thermal equilibrium with the luminescent material. The temperature sensitive probe can be constructed of non-metallic materials, utilized physical phenomenon which are not affected by electromagnetic (EM) fields over a wide range of field strengths and frequencies and thus has application in special circumstances, eq. temperature measurement in biological materials while such tissue is being irradiated with microwaves.
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