Optical constructions incorporating a light guide and low refractive index films
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United States of America Patent
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Nov 1, 2016
Grant Date -
Apr 28, 2016
app pub date -
Jan 4, 2016
filing date -
Dec 8, 2009
priority date (Note) -
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Abstract
Optical constructions use a low index of refraction layer disposed between a low absorption layer and a high absorption layer to increase confinement of light to the low absorption region of the optical constructions. Low index layers can be used in optical constructions that have multi-tiered light confinement. In these constructions, a first tier of reflection is provided when light is reflected at the surface of a low index optical film which is disposed directly or indirectly on a light guide. A second tier of reflection occurs at the surface of a light redirecting film having appropriately oriented refractive structures.
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