Thermal imager incorporating electronics module having focal pla

Details Thermal imager incorporating electronics module having focal pla Thermal imager incorporating electronics module having focal pla

1987-03-09

1989-02-21

Fields, Carolyn E.

Radiant energy

Infrared-to-visible imaging

Including detector array

250334, 250352, H01L 3104

Patent

active

048067610

ABSTRACT:
A thermal imaging system is disclosed in which infrared radiation from the viewed scene is transmitted to a two-dimensional detector array carried on the focal plane of an optical/electronics module which has embedded in it amplifying, filtering and multiplexing circuitry utilizing MOSFET transistors. The module is located inside the cooling device. Cooling requirements depend on the alternatives (a) of using detectors responsive to wavelengths in the 3.0 to 5.0 micron range, which require less cooling, or (b) of using detectors responsive to wavelengths in the 8.0 to 12.0 micron range, which require liquid nitrogen cooling. The two-dimensional detector array may be combined with a limited scanning, called "nutation", which causes each detector to view a plurality of pixels in the incoming infrared radiation.

REFERENCES:
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patent: 3941923 (1976-03-01), Wheeler
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patent: 4403148 (1983-09-01), Coon et al.
patent: 4551629 (1985-11-01), Carson et al.
patent: 4555623 (1985-11-01), Bridgewater et al.
Carlson et al., "Devel. of a Storing Mosaic Module", SPIE vol. 197 (1974), pp. 2-8.

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