Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1978-03-30
1979-09-04
Willis, Davis L.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250349, G01J 100
Patent
active
041669550
ABSTRACT:
A radiation detector having at least one radiation sensitive element with more than two electrical contacts. The effects of noise occurring between pairs of contacts are substantially eliminated by multiplying at least two partial signals appearing between two of the contacts. The detector is particularly suitable for use as a passive infrared detector and as a flame detector.
REFERENCES:
patent: 3848129 (1974-11-01), Figler et al.
patent: 3931515 (1976-01-01), Parkin
Cerberus AG
Fields Carolyn E.
Kleeman Werner W.
Willis Davis L.
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