Patent ID: 6799852
Filing Date: 2004-10-05
Classification: G03B

Abstract:
An image display projector comprising:a lamp light source; a lens element for focusing a light beam emitted from the lamp light source; a reflecting mirror for reflecting a light beam emitted from the lens element; an elliptical mirror having a reflecting face with an elliptical shape for reflecting a light beam reflected by the reflecting mirror; a light valve for modulating a light beam reflected by the elliptical mirror to thereby form image light; and a projection lens for projecting the image light onto a screen; wherein a light focusing point, where the light beam emitted from the lens element is focused is symmetric to one of the two focal points of the elliptical mirror with respect to the reflecting mirror, and the center of an entry pupil of the projection lens is symmetric to the second focal point of the elliptical mirror with respect to the light valve.