Patent ID: 6371617
Filing Date: 2002-04-16
Classification: G03B

Abstract:
A projector that projects and displays an image, comprising:an optical modulation device that controls a direction of emission of illumination light applied to a substantially rectangular light application surface, including a plurality of pixels, for each pixel according to image information to thereby emit image light representing an image; an illuminating optical system that emits the illumination light so that the central axis of the illumination light applied to the light application surface enters the light application surface at a predetermined angle; and a projection optical system that projects the image light emitted from the optical modulation device; the illuminating optical system comprising: a light source that emits light; and a light-transmitting rod through which the light emitted from the light source passes, at least a part of the light passing while being repeatedly reflected by an inner surface of the light-transmitting rod, wherein at least an outline shape of an emitting surface of the light-transmitting rod is a quadrilateral having first and second diagonal lines of different lengths.