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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：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.-
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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