Optical: systems and elements – Having significant infrared or ultraviolet property – Having folded optical path
Patent
1996-04-09
2000-01-18
Shafer, Ricky D.
Optical: systems and elements
Having significant infrared or ultraviolet property
Having folded optical path
359355, 359365, 359366, 359729, 359731, 359859, 359861, G02B 510, G02B 1314, G02B 1706
Patent
active
060162201
ABSTRACT:
A corrector mirror folds the optical path between the objective and relay portions of a three-mirror anastigmat. The corrector mirror is a non-powered mirror having a nominally flat but higher order aspheric surface. By placing the corrector mirror between the objective portion and an intermediate image formed by the objective portion, the field offset of the anastigmat can be significantly increased. A large field offset makes the off-axis anastigmat ideal for use with an on-axis dewar for infrared imaging applications.
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Alkov Leonard A.
Lenzen, Jr. Glenn H.
Raufer Colin M.
Raytheon Company
Shafer Ricky D.
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