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公开(公告)号：US12242092B2
公开(公告)日：2025-03-04
申请号：US17804007
申请日：2022-05-25
Applicant: AGC Inc.
Inventor： Motoshi Nakayama , Kazuhiko Shiono , Ryo Hirano
IPC: G02F1/1333 , G02B1/04 , G02B5/00 , G02B5/28 , G02F1/1335 , G02F3/00 , G02B1/14
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：US12147065B2
公开(公告)日：2024-11-19
申请号：US18397360
申请日：2023-12-27
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , Takeru Wakabayashi , Takashi Nagata
IPC: G02B5/20
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-5), (i-7) to (i-10), (i-12) and (i-14).
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公开(公告)号：US11993718B2
公开(公告)日：2024-05-28
申请号：US16940607
申请日：2020-07-28
Applicant: AGC Inc.
Inventor： Shoko Suzuki , Kazuhiko Shiono , Sayuri Yamada , Hiroki Hotaka
CPC classification number: C09B67/0063 , C09B23/166 , G02B5/208 , H04N25/11
Abstract: The present invention relates to an optical filter containing: an absorption layer containing a near-infrared absorbing dye satisfying the following (i-1) to (i-5), and a transparent resin; and a reflection layer, and satisfying the following (ii-1);
(i-1) λmax(A) TR is in a wavelength range of 760 to 900 nm;
(i-2) T435-480ave (A) TR and T480-590ave (A) TR are both 90% or more.
(i-3) λmax(A) DCM is in a wavelength range of 760 to 900 nm.
(i-4) T435-480ave (A) DCM is 95% or more and T480-590ave (A) DCM is 97% or more.
(i-5) a difference between T435-480ave (A) DCM and T435-480ave (A) TR, and a difference between T480-590ave (A) DCM and T480-590ave (A) TR are 10.5% or less.
(ii-1) an average transmittance of light in the wavelength range of 800 to 900 nm is 5% or less at an incident angle of 60 degrees.-
Patent Agency Ranking
公开(公告)号：US11693163B2
公开(公告)日：2023-07-04
申请号：US17017031
申请日：2020-09-10
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , Keigo Matsuura , Sayuri Higashitamori , Hiroki Hotaka
CPC classification number: G02B5/208 , C09B57/007 , G01J1/0488 , G02B1/04 , G02B5/22 , H01L27/14625
Abstract: An optical filter includes an absorption layer which increases a visible light transmittance while having a good near-infrared blocking characteristic, and which is excellent in not only adhesiveness with respect to a layer to be abutted, but also light resistance. The optical filter includes: an absorption layer containing a near-infrared absorbing dye containing a squarylium-based dye and a transparent resin; and an inorganic or organic material in contact with the absorption layer. The squarylium-based dye has a squarylium skeleton and condensed ring structures bonded thereto respectively on both sides thereof, the condensed ring structures each including a benzene ring and a nitrogen atom as an annular atom, each benzene ring having an urethane structure in the second position.
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公开(公告)号：US11029457B2
公开(公告)日：2021-06-08
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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公开(公告)号：US10809428B2
公开(公告)日：2020-10-20
申请号：US15806596
申请日：2017-11-08
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , Keigo Matsuura , Sayuri Higashitamori , Hiroki Hotaka
Abstract: An optical filter includes an absorption layer which increases a visible light transmittance while having a good near-infrared blocking characteristic, and which is excellent in not only adhesiveness with respect to a layer to be abutted, but also light resistance. The optical filter includes: an absorption layer containing a near-infrared absorbing dye containing a squarylium-based dye and a transparent resin; and an inorganic or organic material in contact with the absorption layer. The squarylium-based dye has a squarylium skeleton and condensed ring structures bonded thereto respectively on both sides thereof, the condensed ring structures each including a benzene ring and a nitrogen atom as an annular atom, each benzene ring having an urethane structure in the second position.
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公开(公告)号：US10598834B2
公开(公告)日：2020-03-24
申请号：US15662482
申请日：2017-07-28
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , Keigo Matsuura , Hiroki Hotaka
Abstract: An optical filter whose transmitting characteristics for visible light are favorably maintained and at the same time, whose blocking characteristics for near-infrared light, in particular, with a large incident angle deteriorates less. The optical filter includes an absorption layer and a reflection layer, and satisfies the requirements: in a spectral transmittance curve for a 0° incident angle, an average transmittance for 430 to 620 nm wavelength light is 65% or more, and a wavelength exhibiting a 50% transmittance is in a 600 to 700 nm wavelength; in a 615 to 725 nm wavelength, an average value of absolute values of differences in transmittance between the spectral transmittance curve for the 0° incident angle and 30° incident angle is 8%/nm or less; and in a spectral transmittance curve for a 60° incident angle, the maximum transmittance for 730 to 1000 nm wavelength light is 15% or less.
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公开(公告)号：US10351718B2
公开(公告)日：2019-07-16
申请号：US15355190
申请日：2016-11-18
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , Keigo Matsuura , Hiroki Hotaka
IPC: C09D5/32 , G02B1/115 , H04N5/335 , G02B1/113 , G02B5/28 , C09D201/00 , C09B57/00 , C09D145/00 , C09D167/00 , C09D169/00 , G02B5/20 , G02B5/22 , H01L27/146 , C09D7/41 , C09B23/10 , C09B67/22 , C08K5/00 , C08K5/3415 , C08K5/3417
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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