Reflecting-lens objective

Details Reflecting-lens objective Reflecting-lens objective

1975-07-09

1977-04-05

Corbin, John K.

G02B 1708

Patent

active

040158969

ABSTRACT:
An objective particularly designed for copying machines consists of a biconvex lens air-spaced from a negative-meniscus lens with silvered convex surface, known as a Mangin mirror.

REFERENCES:
patent: 2141884 (1938-12-01), Sonnefeld

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