Spatial light modulator with a photoconductor having uneven cond

Details Spatial light modulator with a photoconductor having uneven cond Spatial light modulator with a photoconductor having uneven cond

1995-05-18

1997-01-14

Sikes, William L.

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Optical excitation

359252, 349 29, 349187, G02F 1135, G02F 103, G02F 113

Patent

active

055945678

ABSTRACT:
A spatial light modulator having a photoconductor, a matrix of reflectors and a modulating layer is disclosed. The portions of the photoconductor in between the reflectors have a smaller photoconductivity than those portions under the reflectors. The reduced photoconductivity can be made, for example, by doping the photoconductor while using the reflectors as a mask or by illuminating the photoconductor with a light of 360 joules/cm.sup.2. The photoconductor in between the reflectors may be grooved, The photoconductor can be a superlattice photoconductor.

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