Wide field reflective optical apparatus

Details Wide field reflective optical apparatus Wide field reflective optical apparatus

1974-01-17

1976-06-15

Corbin, John K.

350 55, 350200, G02B 1706

Patent

active

039633284

ABSTRACT:
The disclosure describes a wide field reflective optical system comprising an afocal fore telescope and an imaging system. The afocal telescope comprises first and second confocal paraboloidal reflectors, an aperture stop located in front of the first reflector at a distance equal to its focal length, and a field stop located at the common focal point of the reflectors. The imaging system is an improvement of the Schmidt principle and comprises an aspheric corrector reflector that reflects radiation from the second paraboloidal reflector onto a plane reflector. The plane reflector is located in front of a spherical reflector that focuses radiation at its focal plane through an aperture in the plane reflector.

REFERENCES:
patent: 2454144 (1948-11-01), Epstein
patent: 3062101 (1962-11-01), McCarthy

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