A projector with camcorder defeat

Details A projector with camcorder defeat A projector with camcorder defeat

H - Electricity

04

N

H04N 5/74 (2006.01) G03B 21/00 (2006.01) H04N 5/913 (2006.01)

Patent

CA 2448846

A copy protection illumination system (1) comprises a polychromatic light source (20); uniformizing optics (22) for homogenizing light from the polychromatic light source to provide a uniform illumination field; condenser relay optics; dichroic optics; illumination relay optics (82); a spatial light modulator (30); and a modulation element located at a plane in an optical path located between the polychromatic light source and the spatial light modulator.

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