Optical diffusers with spatial variations
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United States of America Patent
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Mar 10, 2015
Grant Date -
Feb 18, 2010
app pub date -
Jul 21, 2009
filing date -
Jul 22, 2008
priority date (Note) -
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Abstract
A diffuser is configured to diffuse radiation from multiple light sources. The diffuser includes a substrate having optical structures that exhibit both microvariations and macrovariations along the substrate. For example, an array of microlenses may be provided that include at least one feature that varies as a function of the spacing between the light sources. Lighting systems using these diffusers may also be provided.
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