Projektionsgerät mit Mitteln zur Farbtrennung/-synthese

摘要

A small-sized and light-weight projector apparatus is capable of projecting images of high picture quality. A color separation/synthesis section of a projector apparatus comprises: a glass block body composed of a plurality of glass blocks combined together in such a manner that the corresponding sides are in close contact with each other; and a plurality of dielectric multilayer films for separating corresponding component rays of white light included in incident light and for synthesizing emitted rays from a plurality of corresponding spatial modulators. Shapes of individual glass blocks are respectively chosen in so that unnecessary rays generated by the reflection or transmission of reflected rays from respective spatial modulators at the corresponding dielectric multilayer films to be transmitted through or reflected from do not travel toward the reflective surface of any of spatial modulators and moreover after the reflection or transmission at the corresponding dielectric multilayer film, the unnecessary rays first enter the surface of the glass block with an incidence less than 30 DEG .