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

IPC: G02B5/28 ,  C09B23/08 ,  G02B5/20 ,  C09K3/00

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.

公开(公告)号：US11059977B2

公开(公告)日：2021-07-13

申请号：US16052676

申请日：2018-08-02

Applicant: AGC Inc.

Inventor： Noriaki Miyake ,  Satoshi Okada ,  Jun Irisawa ,  Teppei Konishi ,  Keigo Matsuura

IPC: G02B5/22 ,  C09B23/14 ,  C07D217/02 ,  C07D487/04 ,  C07D333/66 ,  C07D235/08 ,  C08L101/00 ,  C07D519/00 ,  C07D235/30 ,  C07D237/28 ,  C07D209/08 ,  C09D179/08 ,  C08K5/3417 ,  C08K5/3437 ,  C08K5/3447 ,  C08K5/3475 ,  C09B57/00 ,  G02B5/20 ,  H01L27/146

Abstract: Provided is a near-infrared-absorbing dye increasing a visible light transmittance and having a near-infrared blocking characteristic. The near-infrared-absorbing dye has an absorption characteristic measured by dissolving the dye in dichloromethane satisfying the following requirements. ⋅In an absorption spectrum at a wavelength of 400 to 800 nm, there is a maximum absorption wavelength λmax in a wavelength region of 670 nm or more. ⋅The following relational expression is established between a maximum absorption constant εA with respect to light with a wavelength of 430 to 550 nm and a maximum absorption constant εB with respect to light with a wavelength of 670 nm or more, where εB/εA≥65. ⋅In a spectral transmittance curve, an average transmittance of light with a wavelength of 430 to 460 nm is 94.0% or more when a transmittance at the maximum absorption wavelength λmax is set to 1%.

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

IPC: G02B5/28 ,  C09B23/08 ,  C09K3/00 ,  G02B5/20

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.

公开(公告)号：US20180346729A1

公开(公告)日：2018-12-06

申请号：US16052676

申请日：2018-08-02

Applicant: AGC Inc.

Inventor： Noriaki MIYAKE ,  Satoshi Okada ,  Jun Irisawa ,  Teppei Konishi ,  Keigo Matsuura

IPC: C09B23/14 ,  C09B57/00 ,  C08K5/3417 ,  C08K5/3447 ,  C08K5/3437 ,  C08K5/3475 ,  G02B5/20

CPC classification number: C08K5/07 ,  C07D217/02 ,  C07D235/08 ,  C07D235/10 ,  C07D333/66 ,  C07D401/14 ,  C07D403/14 ,  C07D409/14 ,  C07D417/14 ,  C07D487/04 ,  C08L101/00 ,  C09B23/00 ,  G02B5/22

Abstract: Provided is a near-infrared-absorbing dye increasing a visible light transmittance and having a near-infrared blocking characteristic. The near-infrared-absorbing dye has an absorption characteristic measured by dissolving the dye in dichloromethane satisfying the following requirements. ⋅In an absorption spectrum at a wavelength of 400 to 800 nm, there is a maximum absorption wavelength λmax in a wavelength region of 670 nm or more. ⋅The following relational expression is established between a maximum absorption constant εA with respect to light with a wavelength of 430 to 550 nm and a maximum absorption constant εB with respect to light with a wavelength of 670 nm or more, where εB/εA≥65. ⋅In a spectral transmittance curve, an average transmittance of light with a wavelength of 430 to 460 nm is 94.0% or more when a transmittance at the maximum absorption wavelength λmax is set to 1%.

公开(公告)号：US11384246B2

公开(公告)日：2022-07-12

申请号：US16747589

申请日：2020-01-21

Applicant: AGC Inc.

Inventor： Shigeki Hattori ,  Satoshi Okada

IPC: G02B5/20 ,  G02B5/28 ,  C09B23/16 ,  G02B5/22

Abstract: A near infrared absorbing dye includes a croconium-based compound shown in formula (AI). In formula (AI), ring Z is either an optionally substituted 6-membered ring including no heteroatom or an optionally substituted 5-membered ring including 0 to 3 heteroatoms in the ring, R1 and R2, R2 and R3, and R1 and a carbon atom or heteroatom as a part of ring Z may be linked to each other to respectively form a heteroring A, a heteroring B, and a heteroring C together with a nitrogen atom.

公开(公告)号：US20200148884A1

公开(公告)日：2020-05-14

申请号：US16747589

申请日：2020-01-21

Applicant: AGC Inc.

Inventor： Shigeki HATTORI ,  Satoshi Okada

IPC: C09B23/16 ,  G02B5/28 ,  G02B5/20

Abstract: A near infrared absorbing dye includes a croconium-based compound shown in formula (AI). In formula (AI), ring Z is either an optionally substituted 6-membered ring including no heteroatom or an optionally substituted 5-membered ring including 0 to 3 heteroatoms in the ring, R1 and R2, R2 and R3, and R1 and a carbon atom or heteroatom as a part of ring Z may be linked to each other to respectively form a heteroring A, a heteroring B, and a heteroring C together with a nitrogen atom.