Wide band color correcting infrared lens system

Details Wide band color correcting infrared lens system Wide band color correcting infrared lens system

1988-10-19

1991-03-12

Arnold, Bruce Y.

350474, G02B 300, G02B 912

Patent

active

049990055

ABSTRACT:
An infrared refractive lens triplet having color correcting properties for radiation within the 3 to 13 micrometer spectral band. In certain embodiments of the invention the triplet is capable of simultaneously focusing radiation in the 3-5 micrometer and the 8-12 micrometer atmospheric windows for imaging about a single focal plane. In these embodiments one lens comprises germanium and another is formed of materials selected from the group consisting of sulfides and selenides of zinc and combinations thereof. A third lens is a glass characterized by chromic properties corresponding approximately to

REFERENCES:
patent: 3778133 (1973-12-01), Tatian
patent: 4397520 (1983-08-01), Neil
patent: 4679891 (1987-07-01), Roberts
patent: 4714307 (1987-12-01), Palmer
patent: 4871219 (1989-10-01), Cooper
Jamieson, "Ultra-Wide Waveband Optics", Proceedings of SPIE, vol. 430, 1983, pp. 163-171.

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