Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Reexamination Certificate
2008-03-03
2011-11-22
Font, Frank G (Department: 2872)
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
C359S028000, C359S292000, C359S599000
Reexamination Certificate
active
08064114
ABSTRACT:
An illumination device for uniformly illuminating an image generating micro-display that includes a coherent light source, a beam shaping and speckle reduction device located on an optical path between said coherent light source and said image generating micro-display, wherein the beam shaping and speckle reduction device includes a dynamic diffractive optical element, and a processor which is configured to control said dynamic diffractive optical element so that a sequence of different hologram patterns is generated on said dynamic diffractive optical element, the different hologram patterns being uncorrelated to each other.
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Font Frank G
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
SONY Deutschland GmbH
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