Liquid crystal devices

Details Liquid crystal devices Liquid crystal devices

1989-05-23

1992-02-18

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

428 1, 359 51, G02F 113

Patent

active

050888072

ABSTRACT:
A liquid crystal device comprises a layer of fibers or filaments (15) permeated with liquid crystal material, the layer (15) being located between electrodes (13, 14) by means of which an electric field can be applied across the layer to vary the transmissivity of the liquid crystal/fiber composite. The diameters of the fibers/filaments are selected so that the light transmissivity of the composite has reduced sensitivity with respect to mismatch of the refractive indices of the liquid crystal and the fibers/filaments.

REFERENCES:
patent: 4673255 (1987-06-01), West et al.
patent: 4688900 (1987-08-01), Doane et al.
patent: 4890902 (1990-01-01), Doane et al.

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