3-D volume visualization display

Details 3-D volume visualization display 3-D volume visualization display

1995-06-26

1998-06-09

Gross, Anita Pellman

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

349 1, 349 74, 349 86, G02F 113, G02F 11335, G02F 11347, G02F 11333

Patent

active

057643172

ABSTRACT:
A volumetric multi-layer screen including a plurality of electrically switchable layers that are stacked and coextensive, each of the plurality of electrically switchable layers including: a first transparent dielectric substrate having a first side and a second side; a first transparent electrode coated on the first side of the first transparent substrate; and an electrically switchable polymer dispersed liquid-crystal film coated on the first transparent electrode. The electrically switchable polymer dispersed liquid-crystal film includes a) a host polymer having an index of refraction and b) a nematic liquid crystal having i) an ordinary index of refraction that substantially matches the index of refraction of the host polymer when an electric field is applied across the electrically switchable polymer dispersed liquid-crystal film from the first transparent electrode, and ii) an extraordinary index of refraction that causes visible light to be scattered at a host polymer
ematic liquid crystal interface when the electric field is not applied across the electrically switchable polymer dispersed liquid-crystal film by the first transparent electrode.

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