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    OPTICAL FILTER AND IMAGING DEVICE
    21.
    发明申请
    OPTICAL FILTER AND IMAGING DEVICE 审中-公开

    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.

    OPTICAL FILTER
    23.
    发明公开
    OPTICAL FILTER 审中-公开

    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).

    OPTICAL FILTER
    24.
    发明公开
    OPTICAL FILTER 审中-公开

    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).

    OPTICAL FILTER AND IMAGING DEVICE
    25.
    发明公开
    OPTICAL FILTER AND IMAGING DEVICE 审中-公开

    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

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

    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.

    OPTICAL FILTER AND IMAGING DEVICE
    27.
    发明申请
    OPTICAL FILTER AND IMAGING DEVICE 有权

    公开(公告)号：US20220011484A1

    公开(公告)日：2022-01-13

    申请号：US17448562

    申请日：2021-09-23

    Applicant: AGC Inc.

    Inventor： Kazuhiko SHIONO ,  Motoshi NAKAYAMA ,  Sayuri YAMADA ,  Takuro SHIMADA ,  Masumi MIYAZAKI ,  Aya ITO ,  Tatsuo YOKOTE

    IPC: G02B5/20 ,  C09B57/00

    Abstract: An optical filter includes: a resin substrate including a resin (P) which has a glass transition temperature of 200° C. or higher and which has specific transmittance properties; an external resin layer; and dielectric multilayer films. In a case where the external resin layer includes the polyimide resin, the optical filter includes an intermediate resin layer including a cycloolefin resin. At least one of the dielectric multilayer films is a near-infrared reflection layer. At least one of the external resin layer and the intermediate resin layer contains a near-infrared absorbing dye (A). The near-infrared absorbing dye (A) has a maximum absorption wavelength within a wavelength range of 800 nm to 1,200 nm. The proportion of a total thickness of members including a resin having a glass transition temperature of 200° C. or higher to a total thickness of the resin-including members is 85% or higher.

    OPTICAL FILTER AND IMAGING DEVICE
    28.
    发明申请
    OPTICAL FILTER AND IMAGING DEVICE 有权

    公开(公告)号：US20210191012A1

    公开(公告)日：2021-06-24

    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 ,  G02B1/04 ,  C09B57/00 ,  C09B67/20 ,  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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