公开(公告)号：US20230039431A1

公开(公告)日：2023-02-09

申请号：US17873335

申请日：2022-07-26

Applicant: AGC Inc. ,  Optical Coatings Japan

Inventor： Hideaki TAKAHOSHI ,  Kazuya TAKEMOTO ,  Keisuke KAWAI ,  Masaaki MIYAKE

IPC: G02B5/20 ,  G02B5/28

Abstract: An optical filter including: a substrate; and a dielectric multilayer film laid on or above at least one major surface of the substrate as an outermost layer, in which: the dielectric multilayer film is a laminate including a low refractive index film and a plurality of high refractive index films laid on each other; the dielectric multilayer film comprises four or more high refractive index films that are 15 nm or smaller in thickness; the high refractive index films have a minimum thickness of 1.5 to 5 nm; the high refractive index films have a minimum thickness of 100 nm or smaller; the high refractive index films satisfy the following spectral characteristics (i-1) and (i-2); and the optical filter satisfies all of the following spectral characteristics (ii-1) to (ii-4).

公开(公告)号：US20250028084A1

公开(公告)日：2025-01-23

申请号：US18908125

申请日：2024-10-07

Applicant: AGC Inc.

Inventor： Kazuya TAKEMOTO ,  Keisuke KAWAI ,  Teruo FUJIWARA ,  Hideaki TAKAHOSHI

IPC: G02B1/115 ,  G02B5/02

Abstract: An anti-reflective film-attached transparent substrate includes: a transparent substrate comprising two main surfaces; and a diffusion layer and an anti-reflective film in this order from a transparent substrate side on one main surface of the transparent substrate. When reflection on the other main surface of the transparent substrate is eliminated and a light source is incident on the one main surface at an incident angle of 45°, a* and b* of diffusely reflected lights at angles of −15°, 15°, 25°, 45°, 75°, and 110° with respect to a specularly reflected light under a D65 light source satisfy formulas (1) −6≤a*≤2, (2) −1≤b*≤12 (3) b*≤−2a*+4, and (4) b*≥−2a*−5.

公开(公告)号：US20230408731A1

公开(公告)日：2023-12-21

申请号：US18454885

申请日：2023-08-24

Applicant: AGC Inc.

Inventor： Keisuke KAWAI ,  Kaname SETO ,  Katsumi SUZUKI ,  Tomoyuki ARAE ,  Kazuya TAKEMOTO

IPC: G02B1/115 ,  C03C17/34

CPC classification number: G02B1/115 ,  C03C17/3417

Abstract: The present invention relates to a transparent substrate with a multilayer film including: a transparent substrate having two main surfaces; and a multilayer film obtained by laminating at least two or more layers having refractive indices different from each other, and disposed on or above at least one main surface of the transparent substrate, in which the multilayer film includes one or more silicon oxide layers, and at least one layer of the one or more silicon oxide layers has a refractive index of 1.460≤n

公开(公告)号：US20230229037A1

公开(公告)日：2023-07-20

申请号：US18155997

申请日：2023-01-18

Applicant: AGC Inc.

Inventor： Kazuya TAKEMOTO ,  Keisuke KAWAI ,  Teruo FUJIWARA ,  Hideaki TAKAHOSHI

IPC: G02F1/1335 ,  G02F1/1333 ,  G02B1/111 ,  C08J5/18

CPC classification number: G02F1/133502 ,  G02F1/133331 ,  G02B1/111 ,  C08J5/18 ,  G02B1/18

Abstract: An anti-reflective film-attached transparent substrate includes: a transparent substrate including two major surfaces; and a diffusion layer and an anti-reflective film on one major surface of the transparent substrate, which are provided in this order. (A) A luminous reflectance SCI Y of an outermost surface of the anti-reflective film-attached transparent substrate is 1% or lower. (B) The anti-reflective film has a lamination structure in which at least two dielectric layers having different refractive indices are laminated. (C) A ratio (SCE Y)/(SCI Y) of a diffuse reflectance SCE Y of the outermost surface of the anti-reflective film-attached transparent substrate to the luminous reflectance SCI Y of the outermost surface of the anti-reflective film-attached transparent substrate is 0.15 or higher.