A projector with enhanced security camcorder defeat

Details A projector with enhanced security camcorder defeat A projector with enhanced security camcorder defeat

G - Physics

03

B

G03B 21/00 (2006.01) H04N 5/74 (2006.01) H04N 9/31 (2006.01)

Patent

CA 2457272

A projector (10) with enhanced security camcorder defeat including a copy protection illumination system (1) for illuminating a spatial light modulator (30) comprises: a polychromatic light source (20); uniformizing optics (22) for homogenizing light from the polychromatic light source to provide a uniform illumination field; relay optics; dichroic optics; an interference modulation element (5) located at a plane in an optical path located between the polychromatic light source and the spatial light modulator; and a detection means for determining the absence of the interference modulation element.

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