Rear projection screen

Details Rear projection screen Rear projection screen

G - Physics

03

B

88/93

G03B 21/56 (2006.01) G03B 21/62 (2006.01)

Patent

CA 1167298

ABSTRACT A single-sheet (i.e. two-surface) rear projection screen for television applications is described, in which the front or viewer-facing surface is formed with vertically running lenticules for horizontal image light distribution and the rear or projector-facing surface is formed with horizontally running lenticules for vertical image light distribution. There is no need for a diffuser. The lenticule profiles on both surfaces vary as a function of distance from the projection axis in a manner calculated to accomplish several optical objectives: collimation, cosine power fall-off compensation, and rearward reflection gradient compensation. Computer programs for calculating the profiles are disclosed.

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