Optical: systems and elements – Projection screen – Embedded particles
Reexamination Certificate
2007-08-06
2008-08-26
Lee, Diane I. (Department: 2851)
Optical: systems and elements
Projection screen
Embedded particles
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
Cruz Magda
Hasse Donald E.
Hasse & Nesbitt LLC
Lee Diane I.
Stewart Filmscreen Corporation
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