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. 1967 May 1;6(5):973-6.
doi: 10.1364/AO.6.000973.

A 50.83-cm focal length, f/1 catadioptric objective

P R Yoder Jr  1 , W H Scidmore
Affiliations

A 50.83-cm focal length, f/1 catadioptric objective

P R Yoder Jr et al. Appl Opt. .

Abstract

A catadioptric objective system of the Flügge type has been developed for experimental use by the U.S. Army. Major features of this objective are its large aperture and EFL [both 50.8 cm (20 in.)], its compact package configuration in spite of these dimensions, and the high image quality achieved with a simple three component system over a 2.8 degrees field of view. In this paper, the optical and mechanical designs of the objective are described, and some results of laboratory tests of a prototype lens are presented.

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