Brightness enhancement film using an array of light concentrators
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United States of America Patent
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Sep 1, 2009
Grant Date -
Nov 9, 2006
app pub date -
Jul 10, 2006
filing date -
Jun 3, 2004
priority date (Note) -
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Abstract
A brightness enhancement article and illumination system provides light from a two-dimensional surface. The brightness enhancement article has a plurality of light collecting structures wherein each light collecting structure is longitudinally extended in a length direction along the surface. The structures may have various lengthwise shapes such as being curved, concentric, radial, or of varying thickness.
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