Electromagnetic wave reflecting member

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United States of America Patent

PATENT NO 10890777
APP PUB NO 20180356644A1
SERIAL NO

16108554

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Abstract

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Disclosed is a selectively reflective member which can uniformly reflect only a desired wavelength with high efficiency even in a large area and, at the same time, is highly cost effective. Specifically, there is provided an electromagnetic wave reflecting member that reflects electromagnetic waves with a specific wavelength, the electromagnetic wave reflecting member comprising a first selectively reflective layer that reflects only a clockwise or counterclockwise circularly polarized light component with wavelength λ in incident electromagnetic waves, a phase difference layer, and a second selectively reflective layer that reflects only a clockwise or counterclockwise circularly polarized light component with wavelength λ, provided in that order, the phase difference layer having a retardation satisfying the following equation:

description='In-line Formulae' end='lead'Re={(2n+1)/2±0.2}×λdescription='In-line Formulae' end='tail'

wherein Re represents average retardation; λ represents wavelength; and n is an integer of 1 or more.

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Patent Owner(s)

Patent OwnerAddress
DAI NIPPON PRINTING CO LTDTOKYO 162-8001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamada, Satoru Abiko, JP 39 187
Kashima, Keiji Tokorozawa, JP 98 1401
Kuroda, Takashi Moriya, JP 114 989

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