Infrared lens systems

Optical: systems and elements – Having significant infrared or ultraviolet property – Lens – lens system or component

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359358, 359665, G02B 1314, G02B 508, G02B 106

Patent

active

054915830

ABSTRACT:
Lens systems (68, 78, 88, 98, 108, 118) with first and second rigid lens elements (70,71;80,81;90,91;100,101;110,111;120,121) and a liquid lens element (76, 86, 96, 106, 116, 126) therebetween are provided. The first and second rigid lens elements and the liquid lens elements co-act with each other to cause the lens system to have substantially diffraction limited performance over a continuous infrared wavelength band, wherein the first and second rigid lens elements and the liquid lens element are configured and positioned with respect to each other according to a selection of particular designs and design forms.

REFERENCES:
patent: 4958919 (1990-09-01), Sigler
patent: 5020889 (1991-06-01), Mercado et al.
patent: 5033831 (1991-07-01), Sigler
"Selection of optical glasses" by Paul N. Robb: 1985 International Lens Design Conference, Jun. 10-23, 1985, a Reprint from the SPIE PROCEEDINGS, vol. 554, pp. 60-75.
"Refractive indices of liquids in the ultraviolet and infrared" by Paul Robb, SPIE PROCEEDINGS REPRINT from Passive Materials for Optical Elements II, Jul. 14-15, 1993, vol. 2018, pp. 200-205.

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