Spatial light modulator using electrowetting cells
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United States of America Patent
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Jul 30, 2013
Grant Date -
Sep 16, 2010
app pub date -
Oct 17, 2008
filing date -
Oct 19, 2007
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Abstract
A spatial light modulator for modulating light field amplitude comprises a surface relief grating adapted to act as a diffractive lens, where a material is used to fill at least one groove of a surface grating structure, such that a controllable refractive index birefringence of the material inside the surface relief grating is controlled by an electric field, which leads to a controllable intensity at a fixed focal point.
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