COLOR SEQUENTIAL ILLUMINATING SYSTEM FOR A LIQUID CRYSTAL LIGHT VALVE

摘要

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.