Annulus scattering diffuser for display with reflective surface
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United States of America Patent
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Sep 22, 2015
Grant Date -
Aug 28, 2014
app pub date -
May 5, 2014
filing date -
Jul 3, 2012
priority date (Note) -
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Abstract
This disclosure provides systems, methods and apparatus for enhancing the brightness and/or contrast ratio of display devices. In one aspect, the display devices can include an annular diffuser that is configured to scatter light into a ring shaped region. The annular diffuser can include a plurality of axicon lenses or holographic features. The reflective display can include an annular diffuser to shift the direction along which most of the modulated light is scattered away from the direction along which light is specularly reflected by the display devices to reduce specular glare and enhance brightness and/or contrast ratio.
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