Spectral optic temperature sensor

Details Spectral optic temperature sensor Spectral optic temperature sensor

1987-01-20

1988-10-18

McGraw, Vincent P.

Optics: measuring and testing

Optical pyrometers

356 45, 356136, 374161, G01J 508, G01J 558, G01K 1112

Patent

active

047782706

ABSTRACT:
The invention is a temperature sensor which uses the variation in the critical angle between two optically transparent media, at least one of which has an index of refraction variable as a function of temperature, to variably refract and reflect portions of a spectrum incident on the junction of the media at angles less than and greater than the critical angle to produce an optical signal variable as a function of temperature.

REFERENCES:
patent: 4223216 (1980-09-01), Quick et al.
patent: 4334152 (1982-06-01), Dakin et al.
patent: 4660974 (1987-04-01), Machler et al.
patent: 4666304 (1987-05-01), Davies
Patent Abstracts of Japan, vol. 9, No. 33 (P-334) (1756), Feb. 13, 1985.
Patent Abstracts of Japan, vol. 9, No. 6 (P-326) (1729), Jan. 11, 1985.
Patent Abstracts of Japan, vol. 11, No. 72 (P-554) (2519), Mar. 5, 1987.

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