The addition of DMD illumination modulator(s) 702 in series with projection SLM(s) 706/709 to produce high-performance projection displays with improved optical efficiency, reliability, and lower maintenance requirements. This approach eliminates the vibration, audible noise, and safety problems associated...http://www.google.es/patents/US7961399?utm_source=gb-gplus-sharePatente US7961399 - SLM projection display with series DMD illuminator
SLM projection display with series DMD illuminator
