Polymer sheet for projection screen

Optical: systems and elements – Projection screen – Embedded particles

Reexamination Certificate

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C359S454000, C359S460000

Reexamination Certificate

active

07417794

ABSTRACT:
A polymer sheet for use in a projection screen comprises polyorgano silsesquioxane microspheres that enhance light diffusing characteristics. Also disclosed is a projection screen comprising at least two glass plates and the polymer sheet disposed therebetween. Also disclosed is a method of manufacturing a polymer sheet by incorporating the microspheres with the polymer.

REFERENCES:
patent: 7253953 (2007-08-01), Browning
patent: 2004/0190144 (2004-09-01), Hannington

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