Catadioptric wide-angle lens system for reproduction

Details Catadioptric wide-angle lens system for reproduction Catadioptric wide-angle lens system for reproduction

1976-11-05

1978-08-01

Clark, Conrad J.

G02B 1708

Patent

active

041039904

ABSTRACT:
A catadioptric wide-angle lens is disclosed, in which a convex surface of a positive meniscus lens, a convex surface of a negative meniscus lens and a concave surface of a spherical mirror face an object and an image. These elements are arranged in order along the optical axis. The positive meniscus lens is dense crown glass or phosphate dense crown glass. The negative meniscus lens is dense flint glass.

REFERENCES:
patent: 2949820 (1960-08-01), Becker et al.
patent: 3119892 (1964-01-01), Shenker

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