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公开(公告)号：US20250044489A1
公开(公告)日：2025-02-06
申请号：US18922613
申请日：2024-10-22
Applicant: AGC Inc.
Inventor： Motoshi NAKAYAMA , Takahiro SAKAGAMI , Takashi NAGATA , Kazuhiko SHIONO
Abstract: The present invention pertains to an optical filter including: a light-absorbing material Y900-1000 having a maximum absorption wavelength in a wavelength region of 900 nm to 1,000 nm, and a dielectric multilayer film, in which the optical filter satisfies all of spectral characteristics (i-1) to (i-6), and the optical filter may satisfy spectral characteristic (i-7).
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公开(公告)号：US20240427068A1
公开(公告)日：2024-12-26
申请号：US18815960
申请日：2024-08-27
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Kiyokazu ENDO , Takashi NAGATA
IPC: G02B5/22 , H01L27/146
Abstract: An optical filter includes: a substrate; a dielectric multilayer film (I) laid on or above one main surface of the substrate; and a dielectric multilayer film (II) laid on or above the other main surface of the substrate, in which the substrate includes a near-infrared ray absorbing glass and a resin film, the resin film includes a resin and a dye (NIR1), and the optical filter satisfies specific spectral characteristics.
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公开(公告)号：US20240345291A1
公开(公告)日：2024-10-17
申请号：US18751442
申请日：2024-06-24
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Motoshi NAKAYAMA , Takashi NAGATA
Abstract: An optical filter includes: a substrate; and a dielectric multilayer film (A) laid on or above at least one main surface of the substrate as an outermost layer, the dielectric multilayer film (A) being configured to reflect a light in a wavelength region of 900 nm or more, in which the substrate includes a resin film including a resin and a dye (I) having a maximum absorption wavelength of 700 nm to 800 nm in the resin, the optical filter transmits a visible light and a light in at least a partial wavelength region of 750 nm to 1000 nm, and the optical filter satisfies all of spectral characteristics (i-1) to (i-9).
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公开(公告)号：US20220291433A1
公开(公告)日：2022-09-15
申请号：US17804007
申请日：2022-05-25
Applicant: AGC Inc.
Inventor： Motoshi NAKAYAMA , Kazuhiko SHIONO , Ryo HIRANO
Abstract: The present invention relates to an optical filter including a resin base material including an infrared-absorbing pigment layer, and a pair of inorganic dielectric layers which are respectively disposed on or above both main surfaces of the resin base material as outermost layers, in which at least one of the pair of inorganic dielectric layers satisfies at least one of a condition in which a film thickness is 4 μm or greater, and a condition in which the number of layers is 30 or greater, and a ratio of a total film thickness of the pair of inorganic dielectric layers to a film thickness of the resin base material is greater than 8%.
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公开(公告)号：US20190227208A1
公开(公告)日：2019-07-25
申请号：US16369653
申请日：2019-03-29
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Asana YOSHIOKA , Shoko SUZUKI , Hiroki HOTAKA
Abstract: To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol·cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm: In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, R1 is a monovalent hydrocarbon group which may have a substituent, or the like, R2 to R5 are a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.
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Patent Agency Ranking
公开(公告)号：US20190161629A1
公开(公告)日：2019-05-30
申请号：US16263825
申请日：2019-01-31
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Keigo MATSUURA , Hiroki HOTAKA
IPC: C09D5/32 , C09D7/41 , G02B5/22 , H04N5/335 , G02B1/113 , C09B67/22 , C09B23/10 , C09B57/00 , C09D145/00 , H01L27/146 , G02B5/20 , G02B1/115 , C09D201/00 , C09D169/00 , C09D167/00 , G02B5/28
Abstract: An optical filter includes an absorption layer containing a near-infrared absorbing dye with an absorption characteristic in dichloromethane satisfying (i-1) to (i-3). (i-1) In an absorption spectrum of a wavelength of 400 to 800 nm, there is a maximum absorption wavelength λmax in 670 to 730 nm. (i-2) Between a maximum absorption coefficient εA of light with a wavelength of 430 to 550 nm and a maximum absorption coefficient εB of light with a wavelength of 670 to 730 nm, the following relational expression: εB/εA≥65 is established. (i-3) In a spectral transmittance curve, the difference between a wavelength λ80 with which the transmittance becomes 80% on a shorter wavelength side than the maximum absorption wavelength with the transmittance at the maximum absorption wavelength λmax set to 10% and the maximum absorption wavelength λmax is 65 nm or less.
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公开(公告)号：US20240192413A1
公开(公告)日：2024-06-13
申请号：US18401808
申请日：2024-01-02
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Takuro SHIMADA , Yuichiro ORITA , Kiyokazu ENDO , Takashi NAGATA
Abstract: An optical filter, includes: a substrate, a dielectric multilayer film 1 laid on or above one major surface of the substrate, and a dielectric multilayer film 2 laid on or above the other major surface of the substrate, in which the substrate includes a near infrared ray absorbing glass and a resin film, the resin film includes a resin and a pigment (NIR1), and the optical filter satisfies all of spectral characteristics (i-1) to (i-7).
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公开(公告)号：US20240176054A1
公开(公告)日：2024-05-30
申请号：US18418416
申请日：2024-01-22
Applicant: AGC Inc.
Inventor： Motoshi NAKAYAMA , Takashi NAGATA , Kazuhiko SHIONO , Takeru WAKABAYASHI
IPC: G02B5/20
CPC classification number: G02B5/208
Abstract: An optical filter, includes: a near infrared ray absorbing glass, dielectric multilayer films laid on or above both major surfaces of the near infrared ray absorbing glass, and an absorption layer laid on or above a surface of at least one of the dielectric multilayer films and having a maximum absorption wavelength in a near infrared light region, in which the optical filter satisfies all of spectral characteristics (i-1) to (i-5).
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公开(公告)号：US20240142680A1
公开(公告)日：2024-05-02
申请号：US18396795
申请日：2023-12-27
Applicant: AGC Inc.
Inventor： Kazuhiko SHIONO , Takashi NAGATA
IPC: G02B5/20
CPC classification number: G02B5/208
Abstract: An optical filter, includes: a substrate, a dielectric multilayer film 1 laid on or above one major surface of the substrate, and a dielectric multilayer film 2 laid on or above the other major surface of the substrate, in which the substrate includes a near infrared ray absorbing glass and a resin film, the resin film includes a resin and a pigment (NIR1), and the optical filter satisfies all of spectral characteristics (i-1) to (i-3), (i-6) to (i-8), and (i-10) to (i-13).
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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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