White light enhanced color field sequential projection

Details White light enhanced color field sequential projection White light enhanced color field sequential projection

H - Electricity

04

N

H04N 5/74 (2006.01) G03B 33/04 (2006.01) H04N 1/46 (2006.01) H04N 5/72 (2006.01) H04N 9/31 (2006.01)

Patent

CA 2084948

A method for increasing the brightness of a scene in a color projection system is disclosed. The brightness can be increased in both temporal and spatial filtering systems. In a temporal system, a portion of the total illumination time is allocated to white light to raise the overall brightness. In a spatial system, part (26) of the illuminated area (18) is allocated to white light. The parts (20, 22, 24, 26) could be allocated as regions on a spatial lights modulator (1.8), or a spatial light modulator could be dedicated to that area to use white light.

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