TRANSMISSIVE OPTICAL MICROSTRUCTURE SUBSTRATES THAT PRODUCE VISIBLE PATTERNS
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United States of America Patent
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Issued Date -
Apr 14, 2011
app pub date -
Oct 11, 2010
filing date -
Oct 13, 2009
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Abandoned
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Abstract
A light transmissive structure such as a light diffuser includes a substrate having optical microstructures. The optical microstructures include at least one feature that varies across the substrate, so as to produce a visible indicia relative to a viewer of the light transmissive structure. Related diffusers and methods of fabrication are also described.
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