Patent ID: 7460185
Filing Date: 2008-12-02
Classification: H04N

Abstract:
1. An apparatus for projecting an image, comprising: a projector operable to receive a signal representative of an image and to generate light representative of the image; a lens assembly for receiving from the projector the generated light representative of the image and projecting said generated light; a display screen onto which the generated light is projected so that the image is visible to a viewer; an image alignment arrangement for adjusting a relative position of the image on the display screen, said image alignment arrangement being operable to project a test image from the projector onto the display screen and including: at least one sensor located on the display screen for detecting the test image and generating an alignment signal representative of an amount of misalignment of the test image on the display screen; and a mechanical actuator for adjusting a relative position of the projector in response to said alignment signal so that the test image is properly aligned on the display screen.