LIGHT MODULATION METHOD, LIGHT MODULATION PROGRAM, LIGHT MODULATION DEVICE, AND ILLUMINATION DEVICE
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United States of America Patent
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Jul 2, 2015
app pub date -
Jul 9, 2013
filing date -
Jul 26, 2012
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Abstract
A light modulation device includes a phase-modulation type spatial light modulator having a plurality of two-dimensionally arrayed pixels and modulating a phase of input light for each pixel with a modulation pattern, a modulation pattern setting unit setting a target modulation pattern for modulating the phase of the light, a correction coefficient setting unit setting a correction coefficient α of α≧1 according to pixel structure characteristics of the spatial light modulator and pattern characteristics of the target modulation pattern, and a modulation pattern correction unit determining a corrected modulation pattern to be presented on the plurality of pixels of the spatial light modulator by multiplying the target modulation pattern by the correction coefficient α.
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