Light management films for displays
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United States of America Patent
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Oct 5, 2010
Grant Date -
Mar 23, 2006
app pub date -
Feb 9, 2005
filing date -
Feb 12, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Microlens arrays include a substrate, an array of microlenses on a first side of the substrate and an aperture mask on a second side of the substrate. The aperture mask includes an array of apertures at optical axes of the lenses. A second array of apertures may be included in the aperture mask at randomized positions therein. The randomized apertures may be provided in the aperture mask by providing a diffusive layer between the aperture mask and the substrate, and directing coherent radiation through the lens array, the diffusive layer and aperture mask.
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