Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1991-04-16
1992-10-06
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250352, 250238, G01N 2161
Patent
active
051534363
ABSTRACT:
A detector unit which is capable of outputting electrical signals proportional in magnitude to the intensity of that energy in a beam thereof which lies in two different wavelength bands. A beam splitter directs energy in those bands from the entire compass of the beam to a data detector and a reference detector, and bandpass filters and optical traps in front of those detectors ensure that only energy in the selected bands and from the beam reach them. The detectors are mounted in precisely aligned relationship with each other and the beam splitter on, and are electrically isolated from, a monolithic, conductive, isothermal support which allows them to be maintained at the same, selected temperature by a system including data and reference detector heaters and a temperature responsive controller.
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Apperson Jerry R.
Bang Gary M.
Knodle Daniel W.
Labuda Lawrence L.
Russell James T.
Fields Carolyn E.
NTC Technology Inc.
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