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Patent Agency Ranking
公开(公告)号：US20240287312A1
公开(公告)日：2024-08-29
申请号：US18636316
申请日：2024-04-16
Applicant: AGC Inc.
Inventor： Shoko SUZUKI , Kazuhiko SHIONO , Sayuri YAMADA , Hiroki HOTAKA
CPC classification number: C09B67/0063 , C09B23/166 , G02B5/208 , H04N25/11
Abstract: An optical filter, including a first absorption layer containing a near-infrared absorbing dye and a transparent resin. The optical filter also includes a reflection layer. The first absorption layer has a thickness of 0.3 μm to 10 μm. The optical filter satisfies conditions described in the disclosure. An imaging apparatus including the optical filter.
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公开(公告)号：US20230296818A1
公开(公告)日：2023-09-21
申请号：US18323010
申请日：2023-05-24
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Nanako NISHIMOTO , Sayuri YAMADA , Hiroki HOTAKA , Satoshi OKADA , Keigo MATSUURA
CPC classification number: G02B5/282 , C09B23/083 , G02B5/208 , C09K3/00
Abstract: An optical filter includes: an absorption layer including a first near-infrared absorbing dye (D1), a second near-infrared absorbing dye (D2), and a transparent resin; and a reflection layer including a dielectric multilayer film. The dye (D1) and the dye (D2) are squarylium compounds satisfying following (1) to (3). (1) The dye (D1) has a maximum absorption wavelength λmax(D1) within a range of 680 to 730 nm, and the difference between a wavelength at which a transmittance is 80% on the shorter wavelength side than λmax(D1) when the concentration is adjusted such that a transmittance at λmax(D1) is 10%, and λmax(D1) is 100 nm or less. (2) The dye (D2) has a maximum absorption wavelength λmax(D2) within a range of 720 to 770 nm. (3) A value obtained by subtracting λmax(D1) from λmax(D2) is 30 nm or more and 85 nm or less.
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公开(公告)号：US20220011484A1
公开(公告)日：2022-01-13
申请号：US17448562
申请日：2021-09-23
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Motoshi NAKAYAMA , Sayuri YAMADA , Takuro SHIMADA , Masumi MIYAZAKI , Aya ITO , Tatsuo YOKOTE
Abstract: An optical filter includes: a resin substrate including a resin (P) which has a glass transition temperature of 200° C. or higher and which has specific transmittance properties; an external resin layer; and dielectric multilayer films. In a case where the external resin layer includes the polyimide resin, the optical filter includes an intermediate resin layer including a cycloolefin resin. At least one of the dielectric multilayer films is a near-infrared reflection layer. At least one of the external resin layer and the intermediate resin layer contains a near-infrared absorbing dye (A). The near-infrared absorbing dye (A) has a maximum absorption wavelength within a wavelength range of 800 nm to 1,200 nm. The proportion of a total thickness of members including a resin having a glass transition temperature of 200° C. or higher to a total thickness of the resin-including members is 85% or higher.
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公开(公告)号：US20250051579A1
公开(公告)日：2025-02-13
申请号：US18927277
申请日：2024-10-25
Applicant: AGC Inc.
Inventor： Sayuri YAMADA , Kazuhiko SHIONO , Hiroki HOTAKA
Abstract: The present invention relates to an optical filter containing: an absorption layer containing a near-infrared absorbing dye (A) having a maximum absorption wavelength in dichloromethane being in a wavelength range of 850 to 1,100 nm and a transparent resin; and a reflection layer formed of a dielectric multilayer film, in which the near-infrared absorbing dye (A) satisfies the following Formulae (1) to (4). AB S 400 ( A ) DCM / AB S λ max ( A ) DCM
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公开(公告)号：US20220179141A1
公开(公告)日：2022-06-09
申请号：US17651911
申请日：2022-02-22
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Sayuri YAMADA , Yayoi YAMAMORI
Abstract: The present invention relates to an optical filter including an absorption layer containing a near-infrared absorbing dye and a resin, in which the near-infrared absorbing dye contains a squarylium dye having a maximum absorption wavelength in 650 to 780 nm and a thermal decomposition temperature of 265° C. or higher and satisfying IR20−IR80
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