Temperature detection using the refractive indices of light guid

Details Temperature detection using the refractive indices of light guid Temperature detection using the refractive indices of light guid

1980-08-14

1982-02-23

Swisher, S. Clement

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01K 1112

Patent

active

043163882

ABSTRACT:
A temperature detection apparatus is provided which comprises at least one light source, light guide and light detector. The light guide is placed in thermal communication with target areas whose temperatures are of interest, particularly for application in electromechanical apparatus where the target area whose temperature is of interest is relatively inaccessible and/or an electrical temperature probe would encounter interference. The light guide itself indicates temperature changes since it only transmits light when the temperature-dependent refractive index of its core exceeds that of its cladding.

REFERENCES:
patent: 3609731 (1968-08-01), Evans
patent: 3960017 (1976-06-01), Romanowski
patent: 4117460 (1978-09-01), Walworth
patent: 4136566 (1979-01-01), Christensen
patent: 4151747 (1979-05-01), Gottleib et al.

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