1980-11-07
1983-10-25
Corbin, John K.
350412, 350443, 350445, G02B 1708
Patent
active
044114990
ABSTRACT:
An improved, compact optical system comprising a concave primary mirror and a convex secondary mirror. The primary mirror converges radiation to the secondary mirror. The secondary mirror comprises a lens having a first and a second surface. The second surface is coated with reflective material. The radiation received by the lens is refracted at the first surface, reflected back from the second surface, and then refracted once again by the first surface. The first and second surfaces have a shape for providing control of field curvature.
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Philip J. Rogers, Chief Optical Engr., "A Comparison Between Optimised Spheric and Aspheric Optical Systems for the Thermal Infrared", SPIE Computer-Aided Optical Design, vol. 147, pp. 141-148, (1978).
Abel Irving R.
Hatch Marcus R.
Corbin John K.
Dzierzynski P. M.
Honeywell Inc.
Sumner John P.
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