Infrared detecting apparatus

Details Infrared detecting apparatus Infrared detecting apparatus

1989-12-01

1991-10-08

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2503383, 250349, G01J 510

Patent

active

050556851

ABSTRACT:
An infrared detecting apparatus which includes an infrared filter which intercepts visible light and transmits infrared rays having at least two infrared detecting elements for receiving infrared rays transmitted through the filter and converting the received infrared rays into an electric signal and an electronic circuit which amplifies the difference signal supplied from the infrared detecting elements so that the relative positional relationship between the infrared detecting elements and the infrared filter which allows for the solid angle extending from an arbitrary point on the infrared filter to the peripheral edge of the infrared detecting element's receiving surface to be not greater or less than a specific range.

REFERENCES:
patent: 3875408 (1975-04-01), Posch
patent: 4307388 (1981-12-01), Doenges et al.
patent: 4682030 (1987-07-01), Rose et al.

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