High performance light valve having double layer photoconductor

Details High performance light valve having double layer photoconductor High performance light valve having double layer photoconductor

1991-11-22

1992-10-06

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 71, 359 79, 359294, 359246, G02F 1135, G02F 1137

Patent

active

051537613

ABSTRACT:
A high performance light valve for optimizing the switching of a liquid crystal on an area basis. The light valve uses a transparent charge separation layer to allow for the accumulation of photo-generated charges. The light valve concentrates the light absorption in a narrow charge generation region where high electric fields are present from the junction of dissimilar semiconductor materials. The light valve has a switching characteristic dominated by the light and dark carrier densities in a narrow reversed biased region.

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