Method and apparatus for far infrared detection

Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive

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250351, G01J 100

Patent

active

043639674

ABSTRACT:
A modified thermal viewer and method of operating same for detecting and tially analyzing a cloud for the presence of certain chemical compounds, whereby the cloud is viewed through two or more band-pass filters independently and consecutively with each filter responsive to a different band of spectral radiation characteristic of the particular chemical agent of concern.

REFERENCES:
patent: 3780293 (1973-12-01), Flint
patent: 3860818 (1975-01-01), Stalder et al.
patent: 4230400 (1980-10-01), Wick et al.
patent: 4280050 (1981-07-01), Callender et al.

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