Electronic chopping

Details Electronic chopping Electronic chopping

1996-07-19

2000-02-22

Westin, Edward P.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2503384, G01J 524

Patent

active

060283122

ABSTRACT:
A sensor with radiation detectors with two or more photoconductor elements and bias polarity switching of one element to emulate mechanical chopping of input radiation. This electronic chopping permits higher chopping frequencies than mechanical chopping for bolometers because the scene settling time does not limit electronic chopping. The detectors may be within a single vacuum integrated circuit package with separate narrow passband filters for chemical spectral analysis.

REFERENCES:
patent: 3995174 (1976-11-01), Zrudsky
patent: 4697081 (1987-09-01), Baker
patent: 5502307 (1996-03-01), Baliga et al.

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