Full Color Projector With Liquid Crystal Photoconductor Light Valves And Cholesteric Mirrors.

Command Icontrol applications require bright large size images and liquid crystal light valve ( LCLV ) projectors seem to be the best choice. Several types of light valve technologies have been developed to realize high efficiency, high resolution, and high brightness TV- and data-projectors Ill. Both three-light-valve- and single-light-valvesystems with transmissive and reflective light valves addressing in different ways were investigated. At present, the transmissive aclive matrix TN LCD technology is the mainstream technology but improvement of the effective aperture ratio ( AR ) is still a problem to solve. Reflective light valves have the advantage of higher AR and are remaining a subject of constant interest.