Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1994-12-02
1997-02-04
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250332, 2503381, 2503384, H04N 533, G01J 530
Patent
active
056001436
ABSTRACT:
An infrared sensor includes a linear array of plural photoconductive sensor elements, and a similarly linear multiplexing circuit arranged in side-by-side relation with the linear array of sensor elements. The multiplexing circuit includes a matching plurality of signal input ports, and a wirebond of plural conductors substantially in parallel conducts signals from the plural sensor elements of the array to the respective signal input ports of the multiplexer circuit. The multiplexer circuit includes a matching plurality of adaptation circuits or cells interposed between the respective sensor elements of the array and the input ports of the multiplexing circuit. Each adaptation cell includes a multi-position switch which by its position varies the transfer function of a feed back circuit of the adaptation cell. Plural modes of signal processing for each individual sensor element of the array are provided according to the positions of the multi-position switches of the plural adaptation cells. The sensor includes a microprocessor which allows each sensor element of the array to be operated in a selected one of the plural modes of operation according to the position of the multi-position switch commanded by the microprocessor.
REFERENCES:
patent: 5144133 (1992-09-01), Dudley et al.
patent: 5262871 (1993-11-01), Wilder et al.
Roberts Peter C. T.
Walmsley Charles F.
Fields Carolyn E.
Litton Systems Inc.
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