Optical element, manufacturing method of optical element, optical device and display apparatus
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United States of America Patent
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Jan 23, 2018
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May 5, 2016
app pub date -
Nov 2, 2015
filing date -
Nov 5, 2014
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Abstract
A light-transmissive layer and a partially reflective layer are mutually laminated in a luminous flux diameter enlargement element. When manufacturing the luminous flux diameter enlargement element, a light-transmissive first substrate, on which a first reflective layer is formed on a first surface, a light-transmissive second substrate, on which a first partially reflective layer is formed on a first surface, and which is formed so as to have equivalent thickness to the first substrate, and a third substrate, on which a second reflective layer is formed on a first surface, are laminated toward the same direction as a lamination direction of the respective first surfaces.
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