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公开(公告)号：US20220010422A1
公开(公告)日：2022-01-13
申请号：US17312925
申请日：2019-10-31
Applicant: Konica Minolta, Inc.
Inventor： Jinichi KASUYA , Kazunari TADA
Abstract: A dielectric film is provided on a transparent substrate. The dielectric film has at least one low refractive index layer. An uppermost layer of the dielectric film contains SiO2 and has a film density of 92% or more. The uppermost layer contains an element having an electronegativity smaller than Si.
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