Infrared ray sensing device

Details Infrared ray sensing device Infrared ray sensing device

1987-03-02

1988-12-13

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250339, 250341, G01J 300

Patent

active

047912995

ABSTRACT:
A thermally insulating casing accommodates an infrared ray sensing element. The casing has a window which conducts infrared ray to the sensing element. The window is covered with heat absorption gas. An infrared ray emitting element may be accommodated within the casing. The casing may have a second window which passes infrared ray generated by the emitting element. The second window may be covered with the heat absorption gas.

REFERENCES:
patent: 3614431 (1971-10-01), Low
patent: 3781910 (1973-12-01), Herrmann
patent: 4215273 (1980-07-01), Stokes et al.

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