The invention provides a compact, thin, and lightweight lighting system and projector. A lighting system included in a projector according to the present invention is provided with an LED array having LEDs and a reflective plate at the rear side of the LEDs in the light emitting direction, retardation...http://www.google.de/patents/US20030231497?utm_source=gb-gplus-sharePatent US20030231497 - Lighting system and projector
