Detector for use in infrared gas analyzer

Details Detector for use in infrared gas analyzer Detector for use in infrared gas analyzer

1978-03-20

1980-03-18

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250352, G01J 100

Patent

active

041941187

ABSTRACT:
A metallic block has a conical measuring-light inlet port and a conical reference-light inlet port formed therein. The ports intersect at a light sensor. The inlet ports are closed by respective multilayer interference filters. Temperature control means, which may be responsive to the light sensor output, maintains the metallic block, and thus the filters and sensor, at a fixed temperature.

REFERENCES:
patent: 2844729 (1958-07-01), Winterling et al.
patent: 3539804 (1970-11-01), Billetdeaux et al.
patent: 3860344 (1975-01-01), Garfunkel
patent: 4041314 (1977-08-01), Oppelt

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