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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
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).
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Patent Agency Ranking
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
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.
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公开(公告)号：US20250028083A1
公开(公告)日：2025-01-23
申请号：US18908069
申请日：2024-10-07
Applicant: AGC Inc.
Inventor： Hideaki TAKAHOSHI , Yasuhisa NISHIKAWA
Abstract: An anti-reflective film-attached transparent substrate includes a transparent substrate and an anti-reflective film. The anti-reflective film has a laminated structure in which at least two layers having different refractive indices are laminated, at least one layer is mainly formed of a Si oxide, at least another layer is a mixed oxide layer mainly formed of a mixed oxide containing Mo and Nb, the mixed oxide layer contains an oxide of at least one high hardness metal element selected from the group consisting of W, Cr, Mn, Ni, Zr, Ta, and Be, a proportion of Mo to a total of Mo and Nb in the mixed oxide layer is 60 at % or less, and a proportion of a total of the high hardness metal element to a total of metal elements in the mixed oxide layer is 12 at % or more.
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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.
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公开(公告)号：US20250138223A1
公开(公告)日：2025-05-01
申请号：US18925710
申请日：2024-10-24
Applicant: AGC Inc.
Inventor： Kazuma YOSHIDA , Hideaki TAKAHOSHI , Kazuya TAKEMOTO , Kaname SETO
IPC: G02B1/11
Abstract: An anti-reflective laminate includes: a substrate; and an anti-reflective layer having a four-layer structure including a first refractive index layer, a second refractive index layer, a third refractive index layer, and a fourth refractive index layer. The first refractive index layer has a refractive index of 1.25 to 1.50, the second refractive index layer has a refractive index of 1.50 to 2.40, the third refractive index layer has a refractive index of 2.25 to 2.45, and the fourth refractive index layer has a refractive index of 1.25 to 1.50. The first refractive index layer has a thickness of 40 to 105 nm, the second refractive index layer has a thickness of 60 to 90 nm, the third refractive index layer has a thickness of 80 to 110 nm, and the fourth refractive index layer has a thickness of 70 to 100 nm.
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公开(公告)号：US20220206201A1
公开(公告)日：2022-06-30
申请号：US17645786
申请日：2021-12-23
Applicant: AGC Inc. , Optical Coatings Japan
Inventor： Yosuke SUGIHARA , Yasuyuki TAKIMOTO , Takahiro MASHIMO , Atsushi KOYANAGI , Naoto TATSUOKA , Masaaki MIYAKE , Hideaki TAKAHOSHI
Abstract: An optical filter includes a substrate and a dielectric multilayer film laid as an outermost layer on at least one major surface of the substrate. The dielectric multilayer film includes a low-refractive index film and a high-refractive index film provided alternately. At least one film selected from the group consisting of the low-refractive index film and the high-refractive index film satisfies the following optical characteristics (i-1) and (i-2A): (i-1) an extinction coefficient k600 at a wavelength of 600 nm is 0.12 or larger; and (i-2A) a minimum extinction coefficient k1530-1570MIN in a wavelength range of 1530 to 1570 nm is 0.01 or smaller; and the optical filter satisfies the following optical characteristic (ii-1A): (ii-1A) light in a wavelength range of 400 to 680 nm is blocked and light in the wavelength range of 1530 to 1570 nm is transmitted.
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