Optical filter and imaging device comprising same
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United States of America Patent
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Jul 28, 2020
Grant Date -
Mar 15, 2018
app pub date -
Mar 17, 2016
filing date -
Mar 17, 2015
priority date (Note) -
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Abstract
An optical filter includes a binder resin matrix, and a light absorbent dispersed in the binder resin matrix. The binder resin matrix in which the light absorbent is dispersed is composed of a single layer, and the binder resin matrix includes n zones (where n is an integer ranging from 3 to 7) equally divided in a thickness direction of the matrix. The binder resin matrix has one or more zones in which 40% or more of the total amount of the light absorbent is dispersed, and has one or more zones in which 10% or less of the total amount of the light absorbent is dispersed.
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