Display device with diffractive optics
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United States of America Patent
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Feb 5, 2013
Grant Date -
Oct 8, 2009
app pub date -
Apr 6, 2009
filing date -
Oct 10, 2006
priority date (Note) -
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Abstract
Light modulator displays may be illuminated using a light guide comprising diffractive optics that directs light onto the light modulators. The light guide may comprise, for example, a holographic light turning element that turns light propagating within the light guide onto the array of light modulators. In some embodiments, the holographic element has multiple holographic functions. For example, the holographic element may additionally collimate ambient light or diffuse light reflected form the light modulators.
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