An illuminating device comprises a first light source in which LED chips are arranged in an array shape and a second light source in which LED chips are arranged in an array shape. The two light sources of each illuminating device are arranged such that the main light-emission optical axes of the light...http://www.google.es/patents/US20060023172?utm_source=gb-gplus-sharePatente US20060023172 - Illuminating device and projection type video display
Illuminating device and projection type video display
