Extreme wide angle, very large aperture, compact, UV imaging len

Details Extreme wide angle, very large aperture, compact, UV imaging len Extreme wide angle, very large aperture, compact, UV imaging len

1994-06-20

1996-04-02

Lerner, Martin

Optical: systems and elements

Having significant infrared or ultraviolet property

Lens, lens system or component

359350, 359361, 359722, 359723, 359783, G02B 1314, G02B 300

Patent

active

055046185

ABSTRACT:
An extreme wide angle, very large aperture, very compact, solar blind, UV imaging lens system. The lens system has a fused silica polyvinyl alcohol glass color filter, a lens made of fused silica, a lens made of nickel sulfate, a layer of coupling fluid and another lens made of fused silica. Alternatively, sapphire can be used after the color filter instead of the fused silica. An alternative lens is composed of two layers of fused silica, a layer of nickel sulfate, another layer of fused silica, coupling fluid followed by polyvinyl alcohol, a color glass filter and coupling fluid followed by fused silica. In a fourth embodiment, the two layers of fused silica are followed by polyvinyl alcohol, a layer of colored glass filter, fused silica, nickel sulfate, coupling fluid, and fused silica.

REFERENCES:
patent: 3802765 (1974-04-01), Vuijk
patent: 3884556 (1975-05-01), Nakagawa
patent: 4145116 (1979-03-01), Ikeda
patent: 4394073 (1983-07-01), Wakamiya
patent: 4554447 (1985-11-01), Howard et al.
patent: 5168351 (1992-12-01), Bradley et al.
patent: 5249076 (1993-09-01), Fujiwara et al.

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