A digital micromirror device "DMD") is used to alter the shape of light that is projected onto a stage. The DMD selectively reflects some light, thereby shaping the light that is projected onto the stage. The control for the alteration is controlled by an image. That image can be processed, thereby carrying...http://www.google.de/patents/US6421165?utm_source=gb-gplus-sharePatent US6421165 - Programmable light beam shape altering device using programmable micromirrors
