Beam divergence and various collimators for holographic or stereoscopic displays
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United States of America Patent
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Jul 19, 2016
Grant Date -
Jul 4, 2013
app pub date -
Apr 11, 2011
filing date -
Jul 6, 2010
priority date (Note) -
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Abstract
A holographic display with an illumination device, an enlarging unit and a light modulator. The illumination device includes at least one light source and a light collimation unit, the light collimation unit collimates the light of the at least one light source and generates a light wave field of the light that is emitted by the light source with a specifiable angular spectrum of plane waves, the enlarging unit is disposed downstream of the light collimation unit, seen in the direction of light propagation, where the enlarging unit comprises includes a transmissive volume hologram realizing an anamorphic broadening of the light wave field due to a transmissive interaction of the light wave field with the volume hologram, and the light modulator is disposed upstream or downstream of the anamorphic enlarging unit, seen in the direction of light propagation.
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