Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1976-09-24
1977-08-30
Willis, Davis L.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
73355R, 250353, G01J 100
Patent
active
040456706
ABSTRACT:
The radiometer disclosed herein is battery operated and employs null balance electronics to obtain high precision in a hand-held instrument. A beam splitting optical system combines an image of the target with an image of an illuminated visual meter registering the temperature measured by the instrument, thereby permitting a target to be readily scanned for temperature variations.
REFERENCES:
patent: 4005605 (1977-02-01), Michael
Anderson Alan S.
Cardarelli John J.
Williamson Corporation
Willis Davis L.
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