Optical: systems and elements – Projection screen – Unitary sheet comprising plural reflecting areas
Reexamination Certificate
2007-01-25
2009-08-04
Mahoney, Christopher (Department: 2862)
Optical: systems and elements
Projection screen
Unitary sheet comprising plural reflecting areas
Reexamination Certificate
active
07570423
ABSTRACT:
A projection screen (10) includes a plurality of asperities (14) extending from a substrate, the asperities having faces oriented in a plurality of directions. A photosensitive material is disposed preferentially on the faces so that a differing amount of photosensitive material is present on faces oriented generally toward a projector direction (16) relative to faces oriented generally away from the projector direction (18).
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Hewlett--Packard Development Company, L.P.
Mahoney Christopher
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