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    OPTICAL FILTER
    1.
    发明申请
    OPTICAL FILTER 有权

    公开(公告)号：US20220276420A1

    公开(公告)日：2022-09-01

    申请号：US17663274

    申请日：2022-05-13

    Applicant: AGC Inc.

    Inventor： Yuichiro ORITA ,  Kazuhiko SHIONO ,  Motoshi NAKAYAMA ,  Takuro SHIMADA

    IPC: G02B5/22

    Abstract: An optical filter includes: a transparent substrate; and an absorption layer on the transparent substrate, the absorption layer containing at least one dye (X) having a maximum absorption wavelength in 600 to 1000 nm. A laminate of the transparent substrate and the absorption layer satisfies all of the following characteristics (i-2) to (i-4): (i-2) a maximum internal transmittance in 700 to 850 nm is 35% or lower; (i-3) a difference between the maximum internal transmittance and a minimum internal transmittance in 700 to 850 nm is 20% or smaller; and (i-4) OD(A) and OD(B) satisfy the following relationship: OD(A)/OD(B)

    OPTICAL FILTER AND IMAGING APPARATUS
    2.
    发明申请
    OPTICAL FILTER AND IMAGING APPARATUS 有权

    公开(公告)号：US20250116802A1

    公开(公告)日：2025-04-10

    申请号：US18988429

    申请日：2024-12-19

    Applicant: AGC Inc.

    Inventor： Kazuhiko SHIONO ,  Takuro SHIMADA ,  Yuichiro ORITA ,  Takahiro SAKAGAMI ,  Takashi NAGATA ,  Katsushi KAMIJYO

    IPC: G02B5/22 ,  G02B1/11

    Abstract: An optical filter includes a glass substrate having a first main surface and a second main surface opposite each other and including phosphoric acid glass, a first antireflective layer disposed directly or indirectly on the first main surface of the glass substrate, and a resin layer, containing dye, disposed as one or more layers directly or indirectly on the second main surface of the glass substrate, wherein the glass substrate includes a predetermined range of amount of oxides, wherein the dye has a maximum absorption wavelength in the resin layer at a wavelength range of 690 to 800 nm, wherein thickness of the resin layer is 10 μm or less, wherein the optical filter has all spectral characteristics specified in (a-1) to (a-6), and wherein a Haze value of the optical filter is 2% or less.

    OPTICAL FILTER
    3.
    发明公开
    OPTICAL FILTER 审中-公开

    公开(公告)号：US20240255681A1

    公开(公告)日：2024-08-01

    申请号：US18444829

    申请日：2024-02-19

    Applicant: AGC Inc.

    Inventor： Yuichiro ORITA ,  Kazuhiko SHIONO ,  Takuro SHIMADA

    IPC: G02B5/20

    CPC classification number: G02B5/208

    Abstract: An optical filter includes: a substrate; and a dielectric multilayer film laid on or above at least one major surface of the substrate, in which the substrate includes a resin film including a resin, a UV pigment 1 having a maximum absorption wavelength in 360 nm to 390 nm in the resin, and an IR pigment having a maximum absorption wavelength in 680 nm to 800 nm in the resin, and the optical filter satisfies all of spectral characteristics (i-1) to (i-8).

    OPTICAL FILTER AND IMAGING DEVICE
    7.
    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.

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