Achromatic and athermalized reimager

Details Achromatic and athermalized reimager Achromatic and athermalized reimager

1997-01-08

1999-06-01

Spyrou, Cassandra

Optical: systems and elements

Having significant infrared or ultraviolet property

Lens, lens system or component

359356, 359362, 359434, 250330, G02B 1314

Patent

active

059093080

ABSTRACT:
An achrathermalized reimager includes a front objective defining an optical axis and a relay optic arranged on the optical axis downstream of the front objective. The front objective is both achromatic and athermalized and includes precisely one negative lens made of a material selected from the group consisting of ZnSe and ZnS and one positive lens made of chalcogenide glass.

REFERENCES:
patent: 4679891 (1987-07-01), Roberts
patent: 5021657 (1991-06-01), Kettlewell et al.
patent: 5044706 (1991-09-01), Chen
patent: 5504628 (1996-04-01), Borchard
"Achromatic doublets for simultaneous imaging of IR (10.6-.mu.m) and visible (0.6328-.mu.m) radiation" by A. C. Walker, Applied Optics, vol. 20 (1981), No. 24, New York.

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