Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1997-12-09
2000-03-07
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250351, 250233, 378160, G01J 508
Patent
active
060343710
ABSTRACT:
Thermal imaging chopper (22) having a frame (42) with an open window (47) and a covered window (48). The covered window (48) is preferably covered with a material that partially blocks a selected amount of thermal radiation from a scene and randomly scatters the remaining thermal radiation from the scene that is transmitted through the covered window. The open window (47) allows unrestricted transmission of thermal radiation from the scene.
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Raguin, et al., "Sublength Structured Surfaces and Their Applications", Critical Reviews of Optical Science and Technology vol. CR49, pp. 234-261 (1993).
U.S. Patent Application, "Infrared Chopper Using Binary Diffractive Optics", U.S. Serial No. 08/159,879, filed Nov. 30, 1993. (Attorney Ref. 004578.0525).
Hanson Charles M.
Kormos Alex L.
Hannaher Constantine
Israel Andrew
Raytheon Company
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