Color sequential illumination system for a liquid crystal light

Details Color sequential illumination system for a liquid crystal light Color sequential illumination system for a liquid crystal light

1987-02-11

1988-11-22

Miller, Stanley D.

Optics: image projectors

Plural projection paths with single light source

350173, 350337, 350339F, 353 20, G02F 113, G02B 2714, G03B 2114

Patent

active

047861460

ABSTRACT:
A color sequential illumination system for a liquid crystal light valve is disclosed. The invention operates with no moving parts and provides for the sequential illumination of a light valve with at least two beams of different colors. The rate is fast enough that the colors fuse together and the viewer sees a composite color image. The system includes a prepolarizer and dichroics for providing a first beam along a first optical path having a first color and a first polarization state and a second beam along a second optical path having a second color and said first polarization state. An optical switch is provided for selectively transmitting the first and second beams by sequentially changing the polarization state of each. Associated optical components are provided for directing the first and second beams onto the liquid crystal light valve.

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Bennet et al "Eavesdrop-Detecting Quantum Communications Channel" IBM Technical Disclosure vol. 26, No. 8, Jan. 1984.

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