Other
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985nasa.reptq....l&link_type=abstract
Patent National Aeronautics and Space Administration. Ames Research Center, Moffett Field, CA.
Other
Baffles, Infrared Telescopes, Reflectors, Arrays, Concavity, Patents, Reflected Waves
Scientific paper
This invention relates to an optical system incorporating a plurality of reflective baffles which return incoming off-axis rays from the optical system. The baffles in an infrared telescope would extend circumferentially around the telescope tube. Each of the baffles has a concave, rearwardly facing curved surface and a frontwardly facing planar surface. Baffles extend from the interior wall of tube in an acute angle with the optical axis of the telescope, relative to front end of the tube. This acute angle becomes greater for the baffles toward rear end of the telescope. Incoming off axis rays are reflected by the planar surface of the baffles against the curved surface of a forward adjacent baffle and are reflected back and forth between adjacent surfaces a number of times before being reflected back as rays out of the front end of the telescope. Other off axis rays are directly reflected as rays by the planar surfaces of the baffles.
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