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    Optical glass
    1.
    发明授权
    Optical glass 有权

    公开(公告)号：US10294144B2

    公开(公告)日：2019-05-21

    申请号：US15979793

    申请日：2018-05-15

    Applicant: AGC Inc.

    Inventor： Tatsuo Nagashima ,  Hiroyasu Miyazawa ,  Kenji Kitaoka

    IPC: C03C3/32 ,  C03C4/10 ,  G02B1/00 ,  G01J5/08

    Abstract: There is provided an optical glass having high infrared transmittance and being useful as an on-vehicle infrared sensor and the like. An optical glass including, in expression of atomic %: Ge+Ga; 6% to 30%; S+Se+Te; 50% to 85%; and Ti; 0.001% to 0.5%, wherein a wavelength (λT10%) at a long-wavelength side end in which infrared transmittance in a glass plate of the optical glass converted to a thickness of 1 mm becomes 10% is 12 μm or more.

    Glass for vehicles and camera unit
    2.
    发明授权
    Glass for vehicles and camera unit 有权

    公开(公告)号：US12194927B2

    公开(公告)日：2025-01-14

    申请号：US17804929

    申请日：2022-06-01

    Applicant: AGC Inc.

    Inventor： Tatsuo Nagashima ,  Yutaka Kitajima

    IPC: B60R11/04 ,  B60J1/02 ,  G02B1/11

    Abstract: Glass (1) for vehicles includes a light blocking region (A2) in which a far-infrared ray transmission region (B) provided with an opening and a far-infrared ray transmission member arranged in the opening, and a visible light transmission region (C) transmitting visible light are formed. The opening is formed between an upper edge part (1a) of the glass (1) and a first position (P1) in a first direction from the upper edge part (1a) toward a lower edge part (1b) of the glass (1), the first position (P1) is a position at which a distance from the upper edge part (1a) is 30% of a length from the upper edge part (1a) to the lower edge part (1b), and between a second position (P2) and a third position (P3) in a second direction from a side edge part (1c) toward a side edge part (1d) of the glass (1) for vehicles. A length (L2a) in the second direction from the second position (P2) to the third position (P3) is 55% of a length (L2) from the side edge part (1c) to the side edge part (1d), and a length of the longest straight line among straight lines connecting optional two points within a surface on a vehicle exterior side is equal to or smaller than 80 mm.

    Optical glass, optical member, and optical device
    3.
    发明授权
    Optical glass, optical member, and optical device 有权

    公开(公告)号：US11852815B2

    公开(公告)日：2023-12-26

    申请号：US16876523

    申请日：2020-05-18

    Applicant: AGC INC.

    Inventor： Shinichi Amma ,  Tatsuo Nagashima

    IPC: G02B27/01 ,  G02C7/10

    CPC classification number: G02B27/0172 ,  G02C7/104

    Abstract: The present invention relates to an optical glass having refractive index of 1.55 or more and having chromaticity b* that satisfies b*≥4.8 under A light source in a CIELab representation. The present invention also relates to an optical glass having refractive index of 1.55 or more, having a ratio (b*/|a*|) of chromaticity b* to an absolute value of chromaticity a* that satisfies b*/|a*|≥0.55 under A light source in a CIELab representation, and satisfying b*≥0.1.

    Optical member
    7.
    发明授权
    Optical member 有权

    公开(公告)号：US11994699B2

    公开(公告)日：2024-05-28

    申请号：US17145536

    申请日：2021-01-11

    Applicant: AGC Inc.

    Inventor： Hiroyuki Yamamoto ,  Takahiro Mashimo ,  Takuji Oyama ,  Shinya Tahara ,  Tatsuo Nagashima

    IPC: G02B5/20 ,  B60J1/00 ,  B60J1/02 ,  G02B5/28

    CPC classification number: G02B5/208 ,  B60J1/001 ,  B60J1/02 ,  G02B5/281 ,  G02B5/285

    Abstract: An optical member includes a transparent substrate containing at least one substance selected from glass, a glass ceramic, silicon, and sapphire, and having an infrared high-transmittance region in which an optical transmittance is 78% or more in a wavelength band of 700 nm to 1800 nm; and an optical interference film disposed on a main surface of the transparent substrate corresponding to the infrared high-transmittance region, wherein a transmittance of light, of the optical member, of at least one wavelength λ3 in the wavelength band of 700 nm to 1800 nm in a region of the optical member corresponding to the infrared high-transmittance region of the transparent substrate has a minimum value of 86.5% or more and has a difference between the minimum value and a maximum value of 9% or less in a range where an incidence angle is from 0 degrees to 60 degrees.

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