Projection screen

Optical: systems and elements – Projection screen – Unitary sheet comprising plural reflecting areas

Reexamination Certificate

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Reexamination Certificate

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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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patent: 2005-241920 (2005-09-01), None

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