Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1990-09-28
1995-01-03
Buczinski, Stephen C.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250353, 25037015, G01J 100
Patent
active
053788923
ABSTRACT:
An angle filter for restricting the range of light received by a detector functions as a "cold shield" in an infrared optical system. The angle filter either utilizes fiber optics or a thin film technology and reduces the size of an optical system operating in the infrared region while maintaining high system performance. The cold shield/exit pupil configuration of a traditional optical system is replaced by the angle filter.
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Levy Alvin J.
Lyon Allan J.
Buczinski Stephen C.
Martin Marietta Corporation
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