Afocal lens system

Details Afocal lens system Afocal lens system

1992-03-31

1994-01-25

Arnold, Bruce Y.

Optical: systems and elements

Having significant infrared or ultraviolet property

Lens, lens system or component

359755, G02B 1314, G02B 964

Patent

active

052820831

ABSTRACT:
An afocal lens assembly which includes a first and second lens group used r testing an infrared detector assembly. The first lens group includes three lens elements and the second lens group includes four lens elements. The output of the lens assembly includes up to a 60 degree collimated field-of-view. The lens elements are infrared transmissive.

REFERENCES:
patent: 3947084 (1976-03-01), Noyes
patent: 4397520 (1983-08-01), Neil
patent: 4427259 (1984-01-01), Fjeldsted
patent: 4542954 (1985-09-01), Stoltzmann
patent: 4558222 (1985-12-01), Neil
patent: 4802717 (1989-02-01), Kebo
J. M. Lloyd; "Thermal Imaging Systems"; May 1975; pp. 430-439.

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