Liquid-crystal-based optical power limiter

Details Liquid-crystal-based optical power limiter Liquid-crystal-based optical power limiter

1986-01-21

1988-09-06

Heyman, John S.

350330, G02F 1133

Patent

active

047688645

ABSTRACT:
A broad-band optical light detector having a detector cell, a system for focusing light on the cell, and a liquid crystal positioned in the light path, the liquid crystal being prepared so that it passes light along the light path in the normal operating range of the detector cell and directs light away from the light path when a threshold intensity of light is reached.

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D. Maker et al "Intensity Dependent Changes in Refractive Index of Liquids", pp. 507-509-Physical Review Letters-vol. 12, No. 18-May 1964.
Azarov et al "Liquid Crystal Device for Optical Radiation", pp. 489-491-Inserum and Expo Tech (U.S.A.) vol. 24, No. 2, Oct. 1981.
Durbin et al-"Optical-Field-Induced . . . in a Nematic Liquid Crystal", pp. 1411-1414-Physical Review Letters-vol. 47, No. 19, 1981.
S. D. Durbin-"Optical-Field-Induced . . . Nematic Liquid Crystal", Nov. 9, 1981, pp. 1411-1414-The American Physical Society-vol. 47, No. 19, Nov. 1981.
A. D. Azarov-"Liquid Crystal Device for Optical Radiation Control", Inserum & Expo. Tech. (U.S.A.) pp. 489-491-vol. 24, No. 2-Apr. 1981.

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