An illumination system for a color projection display. In one embodiment a broad spectrum light source illuminates a multilevel optical phase element which disperses the broad spectrum light from the light source by diffraction. A display having a number of pixel elements, each capable of transmitting...http://www.google.fr/patents/US6417967?utm_source=gb-gplus-shareBrevet US6417967 - System and method for efficient illumination in color projection displays
System and method for efficient illumination in color projection displays
