Projection screen having elongated structures
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United States of America Patent
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Nov 16, 2004
Grant Date -
Nov 7, 2002
app pub date -
Jan 17, 2001
filing date -
Jan 17, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A light managing screen may provide a rear projection screen, front projection screen or component thereof. The screen may comprise a polymeric composition including a first polymeric material, and a second polymeric material disposed as a plurality of elongated structures within the first polymeric material. Each elongated structure has a major axis and the major axes are substantially aligned. The first polymeric material has an index of refraction that differs by at least 0.01 from an index of refraction of the second polymeric material. In some instances, a pressure sensitive adhesive material is selected as the first polymeric material. The orientation of the elongated structures and the difference in indices of refraction results in the polymeric composition scattering light asymmetrically.
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