Sheeting useful as a projection screen

Details Sheeting useful as a projection screen Sheeting useful as a projection screen

G - Physics

03

B

88/90

G03B 21/60 (2006.01)

Patent

CA 1138233

Sheeting Useful as a Projection Screen Abstract Sheeting useful as a projection screen, especially for projection television, comprises a transparent film that is configured on its back surface with a random pattern of generally parallel elongated microscopic recesses and projections, is reflectively coated on that surface, and is configured on its front surface with lenticular light-refracting recesses and projections that spread light entering and leaving that surface. At least the recesses and projections on the back surface are convex or concave in both their longitudinal and transverse directions. The screen is generally oriented during use so that the elongated recesses and projections in the back surface are arranged vertically. Light projected at the screen enters and is refracted at the front surface, is reflected by the back surface, and is refracted again at the front surface to provide bright images visible with good uniformity to a widely distributed audience.

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