Antiferroelectric liquid crystal light modulation device

Details Antiferroelectric liquid crystal light modulation device Antiferroelectric liquid crystal light modulation device

1994-05-03

1996-12-31

Sikes, William L.

Liquid crystal cells, elements and systems

Liquid crystal optical element

Passive liquid crystal polarizer

349196, 349117, 349 96, G02F 1141, G02F 11347

Patent

active

055899668

ABSTRACT:
The liquid crystal light modulation device of the present invention comprising a liquid crystal element consisting of one of plural liquid crystal cells and a voltage signal input means electrically connected with the liquid crystal element, wherein each liquid crystal cell contains a chiral smectic liquid crystal material layer and when a voltage signal is input to the liquid crystal element, the polarization direction of a light transmitted by the liquid crystal element is changed by approx. 90.degree. as compared with the state where the voltage signal is not input to the liquid crystal element enables a change of a light path and an open-close (on-off) operation of a light path at a high speed (optical switching time: not longer than 1 msec).

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