Dual liquid crystal light valve based visible-to-infrared dynami

Details Dual liquid crystal light valve based visible-to-infrared dynami Dual liquid crystal light valve based visible-to-infrared dynami

1985-12-06

1988-02-02

Fields, Carolyn E.

Radiant energy

Radiant energy generation and sources

With radiation modifying member

2502521, 2504451, 350347F, G02F 1137

Patent

active

047230770

ABSTRACT:
A visible-to-infrared image converter system (10) utilizes a source of infrared light (15), a polarizing beam splitter (19) for separating the infrared light into two polarized beams having their polarity at ninety degrees to one another, and first and second image converters (12, 13) positioned at right angles to one another, each to receive one of the two polarized beams. A source of identical visible information (21) furnishes information to each of the image converters (12, 13) which modulate the infrared beams and reflect them for recombination by the polarizing beam splitter (19).

REFERENCES:
patent: 3694053 (1972-09-01), Kahn
patent: 3824002 (1974-07-01), Beard
patent: 4019807 (1977-04-01), Boswell et al.
patent: 4114991 (1978-09-01), Bleha
patent: 4124278 (1978-11-01), Grinberg et al.
patent: 4228449 (1980-10-01), Braatz
patent: 4378955 (1983-04-01), Bleha
U. Efron et al, "The Silicon Liquid Crystal Light Valve", Journal of Applied Physics 57, No. 4, Feb. 15, 1985, pp. 1356 to 1368.
S. T. Wu et al, "Infrared Liquid Crystal Light Valve", presented at SPIE Annual Technical Symposium, San Diego, CA, Aug. 1985.
U. Efron et al, "Liquid Crystal-Based Visible to IR Dynamic Image Converter", SPIE Proceedings, vol. 465, 1984, pp. 181-191.
J. Grinberg et al, "A New Real-Time Non-Coherent to Coherent Light Image Converter", Optical Engineering, vol. 14, Jun. 1975, pp. 217-225.

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