Patent ID: 7182466
Filing Date: 2007-02-27
Classification: G02B,H04N

Abstract:
1. An image projection apparatus comprising: an optical modulation unit for modulating light and emitting the modulated light; a projection optical system for projecting an image of the optical modulation unit onto a projected plane, the projection optical system including a plurality of curved reflecting surfaces, wherein the plurality of curved reflecting surfaces includes two concave reflecting surfaces; and an optical scanning unit for scanning the projected plane with the light modulated by the optical modulation unit, the optical scanning unit disposed between the optical modulation unit, wherein the optical scanning unit is driven to rotate or swing; wherein the image projection apparatus scans the projected plane with the modulated light by the optical scanning unit, thereby forms a two-dimensional image on the projected plane; wherein the projection optical system forms an intermediate image of the optical modulation unit between two curved reflecting surfaces among the plurality of curved reflecting surface and forms the intermediate image on the projected plane again; and wherein an optical path of a ray connecting a center of said two-dimensional image and a center of a pupil of said projection optical system is inclined with respect to said projected plane.