Light diffraction element and optical low pass filter
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United States of America Patent
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Oct 13, 2015
Grant Date -
Jan 16, 2014
app pub date -
Sep 20, 2013
filing date -
Mar 25, 2011
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Abstract
A light diffraction element comprising a transparent substrate and a first orientation layer that is formed on one surface of the substrate and includes anisotropic polymers and a first pattern of an orientation direction arranged periodically in a first direction along the primary plane of the substrate. The first pattern includes three or more small regions that are arranged in the first direction and in which the orientation direction of the polymers included in the first orientation layer are different from each other, and generates diffracted light as a result of interference between light passed respectively through the three or more small regions.
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