Patent ID: 8100536

Claim:
A digital light processing projector comprising: a light source configured for generating white light beams; a color wheel configured for separating the white light beams into three colored light beams; an integration rod configured for rendering the colored light beams uniform in intensity; a projection lens; a digital micro mirror device configured for modulating the light beams from the integration rod into visual images, wherein when a light beam on a first path is used for helping to constitute a visual image, one of micro mirrors of the digital micro mirror device reflects the light beam on the first path to follow a second path towards the projection lens; and when the light beam on a first path is not used for helping to constitute a visual image, the micro mirror reflects the light beam on the first path to follow a third, a fourth and a fifth path away from the projection lens; a light-shade positioned in a light path of the light beam on the third, the fourth and the fifth path between the digital micro mirror device and the projection lens, and configured for blocking the light beam on the third, the fourth and the fifth path, the light-shade comprising an approximately bow-shaped body, a first platform, and a second platform, the body comprising a plane surface and two inclined surfaces respectively extending from two opposite ends of the plane surface, respectively, and the first and second platforms extending from distal ends of the two inclined surfaces with a direction parallel to the plane surface; and a light-absorbing member positioned under the light-shade and between the projection lens and the digital micro mirror device, and configured for absorbing the light beam on the fifth path, and the light beam on a sixth path and a seventh path reflected by the light-shade from the light beam on the third path and the fourth path, respectively.