Patent ID: 6079833
Filing Date: 2000-06-27
Classification: H04N

Abstract:
An image projection system for generating an energy efficient output image, comprising:a light source;a spatial light modulator;a light source positioning device for directing the light from said light source onto said spatial light modulator;a light source position controller for controlling said light source positioning device; andan image source for providing a desired image, said image source providing image information to said spatial light modulator and also to said light source positioning controller, such that the light from said light source impinges substantially only an area of said spatial light modulator which contains the desired image;a light shaping device positioned in the path of said light source for transiently shaping the light from said light source, said light source position controller coordinating said light shaping device and said light source positioning device with respect to the desired image, and said light source position controller generating a first light path, having a light beam with a first diameter, for outlining the desired image, and a second light path, having a light beam with a second diameter, for filing in an outline of the desired image.