Described herein are display devices that provide projection-type video output and use redundant sets of lasers to generate light. The laser set produces a desired amount of light, e.g., for a primary color. A redundant laser set includes more lasers than that needed to produce the desired amount of...http://www.google.de/patents/US7510284?utm_source=gb-gplus-sharePatent US7510284 - Projection-type display devices including redundant laser sets
