Optical power limiters and materials therein

Details Optical power limiters and materials therein Optical power limiters and materials therein

1984-12-17

1994-09-20

Wu, Shean

Compositions

Light transmission modifying compositions

2522991, 359 96, F21V 900, G02F 113, C09K 1906

Patent

active

053486889

ABSTRACT:
A liquid crystal modified by the addition of an organic dye is used as a non-linear optical material in two devices which limit the optical radiations to sensitive photodetectors. One device uses the self-focusing induced in the crystal to disperse high-intensity optical radiation, the other uses the change of index of refraction of the crystal to effect total reflection of high-intensity radiation from a liquid crystal-linear optical material inter-face

REFERENCES:
patent: 3614211 (1971-10-01), Letter
patent: 3623797 (1971-11-01), Daw
patent: 3999144 (1976-12-01), Bret
patent: 4515429 (1985-05-01), Smith et al.
Cox, Robert J., Liquid Crystal Guest-Host Systems, Mol. Cryst. LIQ, Crm., 79, vol. 55, pp. 1-32.

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