Single mirror projection optical system

Details Single mirror projection optical system Single mirror projection optical system

1984-12-21

1988-10-25

Corbin, John K.

350 12, 350463, G02B 1700, G02B 0000

Patent

active

047799668

ABSTRACT:
A well corrected ring field catadioptric optical system utilizing refractive elements of the same glass type. A virtual relay corrected for axial and lateral primary color incorporates an air-surface doublet and two field lenses to correct for field aberrations to provide a well corrected ring field virtual image. A spherical mirror is used to make the virtual image accessible.

REFERENCES:
patent: 3602578 (1971-08-01), Tibbetts et al.
patent: 3748015 (1973-07-01), Offner
patent: 4171871 (1979-10-01), Dill et al.
patent: 4226501 (1980-10-01), Shafer
patent: 4293186 (1981-10-01), Offner

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