Active light control device

Details Active light control device Active light control device

1976-05-03

1978-11-14

Sikes, William L.

G02F 128

Patent

active

041253191

ABSTRACT:
A light control device comprises a plurality of minute particles, having dipolar and light control characteristics, which are supported in an elastic solid matrix. The particles have a length to width ratio greater than two and are supported in a common orientation across the elastomeric matrix to block (or transmit) incident light. Under application of an electric field across the layer the particles reorient to provide a reverse light control effect. Upon removal of the field the particles quickly return to their original orientation. Image display embodiments utilizing a photoconductor or other imagewise field providing structures are disclosed.

REFERENCES:
patent: 3485621 (1969-12-01), Kazan
patent: 3813265 (1974-05-01), Marks

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