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公开(公告)号：US12181696B2
公开(公告)日：2024-12-31
申请号：US17193151
申请日：2021-03-05
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , Motoshi Nakayama , Tatsuo Yokote , Aya Ito
IPC: G02B5/20 , C09B57/00 , C09B67/20 , G02B1/04 , H01L27/146
Abstract: An optical filter includes: a resin substrate having a thickness of 20 μm or more and 110 μm or less; an absorption layer having a thickness of 0.25 μm or more and 12 μm or less and being disposed on at least one principal surface of the resin substrate; and dielectric multilayer films disposed as an outermost layer on both principal surfaces of the resin substrate. At least one of the dielectric multilayer films is a near-infrared reflection layer. The resin substrate includes a first transparent resin having a glass transition temperature of 170° C. or more and having specific optical properties. The absorption layer includes a near-infrared absorbing dye (A) and a second transparent resin having a glass transition temperature of 170° C. or more, and the near-infrared absorbing dye (A) satisfies specific optical properties in relation to the second transparent resin.
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公开(公告)号：US10408979B2
公开(公告)日：2019-09-10
申请号：US15071446
申请日：2016-03-16
Applicant: AGC Inc.
Inventor： Asana Yoshioka , Kazuhiko Shiono , Hiroyuki Arishima , Hiroki Hotaka
Abstract: Provided is an optical filter, which includes a light-absorbing layer and a light-reflecting layer and satisfies the following requirements: (i) in a spectral transmittance curve at an incident angle of 0°, an average transmittance over the 430-620 nm wavelength range is ≥80%, an average transmittance over the 430-450 nm wavelength range is ≥76%, an average transmittance over the 735-1100 nm wavelength range is ≤5%, and an average transmittance over the 350-395 nm wavelength is ≤5%; and (ii) there is a wavelength λ0(UV) with transmittance of 50% in the 400-425 nm wavelength range in the spectral transmittance curve at the incident angle of 0°, there is a wavelength λ30(UV) with transmittance of 50% in the 400-425 nm wavelength range in a spectral transmittance curve at an incident angle of 30°, and an absolute value of a difference between the wavelengths, |λ0(UV)−λ30(UV),| is ≤5 nm.
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公开(公告)号：US10228500B2
公开(公告)日：2019-03-12
申请号：US15466118
申请日：2017-03-22
Applicant: AGC Inc.
Inventor： Yoshiharu Ooi , Kazuhiko Shiono , Asana Yoshioka , Shoko Suzuki , Hiroki Hotaka
Abstract: An optical filter includes: an absorption layer containing a first near-infrared absorbent having a maximum absorption in a wavelength of 660 to 785 nm, and satisfying (i-1) in 620 to 670 nm, on a shorter wavelength side of a wavelength λ (DA_Tmin) exhibiting the maximum absorption, there is a wavelength λSh (DA_T50%) at which a transmittance becomes 50%; and a reflection layer formed of a dielectric multilayered film satisfying (ii-1) in 670 to 1200 nm, there is a near-infrared reflection band in which a transmittance with respect to light at an incident angle of 0° becomes 50% or less, and a wavelength λSh (A2_Ts50%) at which a transmittance of light of an s polarization component out of light at an incident angle of 30° becomes 50%, on a shorter wavelength side of the near-infrared reflection band, is positioned on a longer wavelength side of the wavelength λSh (DA_T50%).
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公开(公告)号：US10324240B2
公开(公告)日：2019-06-18
申请号：US15454521
申请日：2017-03-09
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：US12181697B2
公开(公告)日：2024-12-31
申请号：US18396795
申请日：2023-12-27
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , 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-3), (i-6) to (i-8), and (i-10) to (i-13).
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Patent Agency Ranking
公开(公告)号：US11709298B2
公开(公告)日：2023-07-25
申请号：US16808480
申请日：2020-03-04
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , Nanako Nishimoto , Sayuri Yamada , Hiroki Hotaka , Satoshi Okada , Keigo Matsuura
CPC classification number: G02B5/282 , C09B23/083 , C09K3/00 , G02B5/208
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：US12204124B2
公开(公告)日：2025-01-21
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
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：US12168730B2
公开(公告)日：2024-12-17
申请号：US16944219
申请日：2020-07-31
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). ABS400(A)DCM/ABSλmax(A)DCM
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公开(公告)号：US10746908B2
公开(公告)日：2020-08-18
申请号：US15819670
申请日：2017-11-21
Applicant: AGC Inc.
Inventor： Yoshiharu Ooi , Hiroshi Kumai , Kazuhiko Shiono , Hiroki Hotaka
IPC: G02B5/20 , G02B5/22 , G02B5/28 , C03C17/42 , C09B57/00 , C03C17/00 , C03C4/08 , G02B1/04 , G03B11/00
Abstract: There is provide an optical filter suppressed in incidence angle dependence and having high visible light transmittance. The optical filter includes: an absorption layer containing a first near-infrared absorbent (DA) having a maximum absorption wavelength λ(DA_Tmin) in wavelengths of 685 to 715 nm and a second near-infrared absorbent (DB) having a maximum absorption wavelength λ(DB_Tmin) in wavelengths of 705 to 725 nm or wavelengths of more than 725 nm and 900 nm or less on a side of a wavelength longer than the maximum absorption wavelength λ(DA_Tmin), and satisfying specific light absorption characteristics; and a reflection layer including a dielectric multilayer film satisfying specific reflection characteristics in wavelengths of 700 to 1150 nm, wherein a transmittance of the reflection layer in a boundary region of visible light and near-infrared light and a transmittance of the absorption layer have a specific relation.
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公开(公告)号：US10745572B2
公开(公告)日：2020-08-18
申请号：US16263825
申请日：2019-01-31
Applicant: AGC Inc.
Inventor： Kazuhiko Shiono , Keigo Matsuura , Hiroki Hotaka
IPC: C09D5/32 , G02B1/115 , H04N5/335 , G02B1/113 , G02B5/28 , C09D201/00 , C09D7/41 , C09B23/10 , C09B67/22 , C09B57/00 , C09D145/00 , C09D167/00 , C09D169/00 , G02B5/20 , G02B5/22 , H01L27/146 , 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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