Rear-projection screen

Details Rear-projection screen Rear-projection screen

G - Physics

03

B

88/93

G03B 21/62 (2006.01)

Patent

CA 1324906

ABSTRACT A transparent rear-projection screen (4) having a rear side to which red, green and blue pictures are projected from projectors (1, 2, 3). The rear side has Fresnel lenses (15) for paralleling the light beams received from the projectors. The front ide of the screen (4) has upright ridge-shaped lenses (14) and convex lenses (12, 13) located on both sides of the ridge-shaped lenses (14). For eliminating the BO- called "color shadow" problem, the ridge-shaped lenses (14) have on its flanks light diffusing means which is a half-reflecting layer of lacquer (22) or a matted surface (22A) having irregularities in shape.

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