Patent ID: 7128425
Filing Date: 2006-10-31
Classification: G03B,H04N

Abstract:
1. A projector comprising: a light source configured to emit light; an optical system for illumination configured to condense the light emitted from the light source and emit the light; a reflective light modulating device comprising a reflective surface having a plurality of reflective elements arranged in matrix form to be selectively illuminated by the light emitted from the optical system for illumination; and an optical system for projection configured to project the illumination light reflected by the reflective light modulating device; and a case configured to house at least the optical system for illumination and the reflective light modulating device, the optical system for projection including a reflective surface configured to bend a given projection chief ray reflected at the center of the reflective light modulating device among projection chief rays in the optical system for projection, and the given projection chief ray having a predetermined angle to a ray which strikes the center of the reflective light modulating device after being emitted from the optical system for illumination, the reflective surface including a P shaft which is parallel to one of an X axis and a Y axis along which the plurality of reflective elements is arranged, and the case including a case surface which is substantially perpendicular to a plane having the X and the Y axis thereon, wherein the case surface intersects both the X and the Y axis at an angle of substantially 45 degrees.