Texas Instruments Corporation

James Vorgert

Scott D Heimbuch

An image display system (,) having an auto-focus system (,). An image sensor (,) such as a CCD camera, senses the sharpness of pixels (,) comprising a portion of the image at a screen (,), preferably a magnified portion of the image. A sensor data processor (,) processes the pixel data from the sensor (,), and instructs the auto focus system (,) to adjust an optical parameter such as the focal length of a projector lens (,) as a function of the sensor (,) output. A DMD-type SLM is preferably utilized due to the uniform geometric features of the pixel mirrors, but other SLM's can be used. The sharpness or contrast between an &ldquo;on&rdquo; and an &ldquo;off&rdquo; pixel is sensed, and preferably a 10&times;10 array of pixels arranged in a checker board pattern is sensed.

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Plano, TX, United States of America

James Vorgert