Thermal image dynamic range expander

Details Thermal image dynamic range expander Thermal image dynamic range expander

1985-05-06

1987-01-06

Fields, Carolyn E.

Radiant energy

Infrared-to-visible imaging

Including detector array

250350, 250351, 250330, G01J 538, G01J 562

Patent

active

046348700

ABSTRACT:
A gas cell array absorbs infrared energy radiated by a viewed scene. A la interferometer has its resultant intensity changed by the cell's changing length. This is monitored by a vidicon tube that feeds the signal to a digitizer and onto a video display. The incident infrared radiation is chopped into quantized amounts of energy and memory units receive the digitized output of the vidicon tube. Subtractors receive vidicon tube signals simultaneously with quiescent reference levels data. The subtractors form a difference signal by subtracting the quiescent reference level signal from the immediate signal being passed to control threshold detectors. An extended dynamic range of 1,000:1 is accomplished for the preferred embodiment.

REFERENCES:
patent: 2766653 (1956-10-01), Martin et al.
patent: 4063093 (1977-12-01), Astheimer et al.
patent: 4072863 (1978-02-01), Roundy
patent: 4107529 (1978-08-01), Chicklis et al.
patent: 4306150 (1981-12-01), Dietz

Affiliated with

Also associated with

Rating

Thermal image dynamic range expander does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermal image dynamic range expander, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal image dynamic range expander will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-685596