Electro-optical light control element

Details Electro-optical light control element Electro-optical light control element

1976-05-21

1978-05-09

Sikes, William L.

G02F 128

Patent

active

040883949

ABSTRACT:
An electro-optical light control element comprises a pair of transparent electrodes disposed in a predetermined spaced apart relationship, a layer of electro-optical substance disposed between the transparent electrodes and having a light transmission factor variable in accordance with a voltage applied thereto, and a substrate supporting thereon the transparent electrodes and the layer of electro-optical substance. The transparent electrodes and the layer of electro-optical substance together form a control area for controlling the quantity of light passing the transparent electrodes and the layer of electro-optical substance. Conductor electrodes are provided around the control area at a plurality of locations on one of the transparent electrodes and at least one location on the other transparent electrode so that the distribution of the light transmission factor within the control area may be made to substantially conform to a predetermined distribution characteristic.

REFERENCES:
patent: 3688166 (1972-08-01), Desvignes
patent: 3825777 (1974-07-01), Braun
patent: 3953108 (1976-04-01), Schmidt et al.
patent: 3954323 (1976-05-01), Andrews et al.

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