(57) ABSTRACT An image projector (8, 68) includes a light Source (14) that illuminates a
three-path reflective LCD assembly (25, 74) that produces images for projection by a …

BACKGROUND OF THE INVENTION The invention relates to liquid crystal light valve
projectors adapted to provide full color imagery. The liquid crystal light valve is frequently …

Projection systems having o-plate compensation elements are described. The
compensation elements may be negative, positive or biaxial anisotropic element and may …

An improved optical apparatus for an LCD projector capable of more effectively focussing a
light on an LCD panel of a high vision or a Wide vision, and achieving a desired Wave …

In a liquid crystal light valve projector, a quarter-wave compensator plate is disposed
between a polarization plate and a liquid crystal light valve to compensate for polariza tion …

(57) ABSTRACT A cooling device of liquid crystal projector is utilized to cool a liquid crystal
panel and polarizer of an optical System in a liquid crystal projector; when the optical …

In response to these needs, the present invention uses a waveguide System to perform the
polarization recovery function in an LCD projection System. In particular, the present …

Projection lenses and projection lens systems are telecentric between an illumination
subsystem and a set of imagers. The lenses and systems can exhibit color fringing …

BACKGROUND OF THE INVENTION At the present time optical projector systems are
Widely used in business, educational and consumer applications. For example, slide and …

A projection system comprises a light source, a dichroic mirror for separating white light into
blue, green and red color light beams, a halfwave plate for converting the direction of …