Directional backlight
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United States of America Patent
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Jul 18, 2017
Grant Date -
Dec 5, 2013
app pub date -
May 17, 2013
filing date -
May 18, 2012
priority date (Note) -
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Abstract
Disclosed is an optical inline light guiding apparatus which may include a substantially parallel planar light expansion section and a light extraction section comprising a stepped structure, in which the steps may be extraction features and guiding features. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays with wide viewing freedom, high efficiency and low cross talk and other directional display uses.
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