Light control apparatus
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United States of America Patent
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Oct 14, 2014
Grant Date -
Sep 12, 2013
app pub date -
Apr 26, 2013
filing date -
Oct 26, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An optical control apparatus includes: an optical input/output port to which light is input from outside or from which light is output outside; a spatial optical modulator that emits light having entered from the optical input/output port towards the optical input/output port and has polarization dependence; a condensing element that is disposed between the optical input/output port and the spatial optical modulator and optically couples the optical input/output port and the spatial optical modulator; and a polarization control element that is disposed between the condensing element and the spatial optical modulator, controls a polarization state of input light to cause the input light to have only a single polarization direction, and outputs the input light controlled.
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