High efficiency optical devices
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United States of America Patent
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Dec 12, 2006
Issued Date -
N/A
app pub date -
Jul 11, 2005
filing date -
Jun 26, 1995
priority date (Note) -
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Abstract
Optical devices such as backlight assemblies, according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer. The multilayer optical film exhibits low absorptivity and can reflect light approaching at shallow angles as well as normal to the film.
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