1988-06-23
1990-05-01
Arnold, Bruce Y.
350481, 350482, G02B 1102, G02B 910, G02B 100
Patent
active
049213180
ABSTRACT:
A lens system for imaging infra-red radiation comprises two elements, one of Zinc Selenide and the other of either Zinc Sulfide or Cesium Bromide (5). Lens configurations are shown which allow imaging at a common image plane over at least both the 3-5 .mu.m and 8-12 .mu.m optical wavebands.
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patent: 4697866 (1987-10-01), Howard
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"Ultrawide Waveband Optics", Optical Engineering, Mar./Apr. 84, vol. 23, No. 2, pp. 111-116, Jamieson et al.
"Guide to Ir--Transmissive Materials", Laser Focus, Dec. 76, Lussier, pp. 47-50.
Applied Optices, Letters to the Editor, vol. 20, No. 24, Dec. 15, 1981.
Arnold Bruce Y.
Callaghan Terry S.
GEC--Marconi Limited
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