Patent ID: 7445344
Filing Date: 2008-11-04
Classification: G02B,G03B,H04N

Abstract:
1. A projection apparatus for projecting an image onto a projection screen comprising an imaging device for representing the image at a reduced scale, an illumination unit with a lamp and a condenser system and/or a lamp reflector, preferably a focusing lamp reflector, for illuminating the imaging device, a projection assembly comprising a projection lens and provided for imaging the image represented by the imaging device enlarged on the projection screen, and a spatial light mixing system for compensating local differences in the brightness distribution, characterized in that it comprises an adjustable alignment deflecting mirror that is arranged in the illumination path of the imaging device and is provided for adjusting the illumination of the imaging device, wherein the position of said alignment deflecting mirror that is defined by tilt angles can be adjusted by means of setting elements which change particularly the polar and azimuthal angles of the beam reflected, wherein the alignment reflecting mirror is arranged in the light path between the lamp and the light mixing system.