Optical pyrometer including fiber optic and silicon microstructu

Details Optical pyrometer including fiber optic and silicon microstructu Optical pyrometer including fiber optic and silicon microstructu

1990-08-06

1991-08-27

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25022721, 250351, H01J 516

Patent

active

050435728

ABSTRACT:
A pyrometer or other optical system has a silicon microstructure with a beam that is vibrated by optical radiation from an alternating source. The beam alternately blocks and passes radiation supplied to a photodiode from an optically emissive region. A sample and hold circuit receives the output of the photodiode and provides two simultaneous signals representative of the output of the photodiode when radiation is passed to the photodiode and blocked from the photodiode respectively. A processor measures the difference between the two signals and provides an output representative of the temperature of the optically emissive region.

REFERENCES:
patent: 4743752 (1988-05-01), Olsen et al.
patent: 4955979 (1990-09-01), Denayrolles et al.
patent: 4972076 (1990-11-01), Willson

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