Front projection screen

Details Front projection screen Front projection screen

G - Physics

03

B

88/90

G03B 21/60 (2006.01)

Patent

CA 1051237

ABSTRACT A front projection screen is disclosed which is made from a transparent material. Prism-like elements are formed on the backside thereof so that light incident upon the screen from a preferred direction will be totally reflected by the screen while light incident upon the screen from other directions will pass therethrough. Sides of the prism-like elements are curved for dispersion in the horizontal plane while the front surface of the projection screen has segments of cylindrical columns formed thereon perpendicular to the prism-like elements to provide an angular spread in the vertical plane. The thickness of the screen is between 30% and 70% of the focal length of the cylindrical columns to allow the screen to be tilted in the vertical plane. Such a screen substantially reduces unwanted relections.

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