Patent ID: 6997559

Claim:
A reflective liquid crystal projector comprising: three reflective liquid crystal elements illuminated by three color illumination light bundles of three primary colors respectively, to modulate said three color illumination light bundles into three color optical images of three primary colors; a rectangular recombination prism having incident surfaces for receiving said three color optical images, a combining surface for combining said three color optical images into a full-color optical image, and an exit surface for letting said full-color optical image out of said recombination prism; a projection lens for projecting said full-color optical image onto a screen; a prism base plate to which said recombination prism is fixed at its bottom surface; and at least two polarizing beam splitters of a rectangular prism shape, said polarizing beam splitters being placed individually between said liquid crystal elements and said incident surfaces of said recombination prism, for directing said three color illumination light bundles to said liquid crystal elements and for directing said three color optical images to said combining surface of said recombination prism, wherein said polarizing beam splitters are fixed merely at their bottom surfaces to said prism base plate and the top surfaces of said polarizing beam splitters are not fixed to a support.