Patent ID: 7156522

Claim:
A projection-type display device, comprising: a first diode laser set, each diode laser in the first diode laser set including a) a lasing medium in a lasing chamber for producing first light including a first wavelength between about 400 nanometers and about 700 nanometers, b) an output lens for emitting the first light, and c)a photosensor that detects the first light and outputs a signal indicative of the first light; a second diode laser set, each diode laser in the second diode laser set including a) a lasing medium in a lasing chamber for producing second light including a second wavelength between about 400 nanometers and about 700 nanometers, and b) an output lens for emitting the second light; at least one optical modulation device configured to selectively transmit the first light and the second light according to video data included in a video signal provided to the at least one optical modulation device; an optics system arranged to receive the first light and the second light before receipt by the at least one optical modulation device and configured to increase flux area for the first light and the second light before receipt by the at least one optical modulation device; and a projection lens system configured to project light transmitted by the at least one optical modulation device along a projection path.