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    OPTICAL GLASS FOR MOLD PRESS FORMING
    4.
    发明申请
    OPTICAL GLASS FOR MOLD PRESS FORMING 有权
    用于模压成型的光学玻璃

    公开(公告)号：US20140045675A1

    公开(公告)日：2014-02-13

    申请号：US14055929

    申请日：2013-10-17

    Applicant: NIPPON ELECTRIC GLASS CO., LTD.

    Inventor： Takahiro MATANO ,  Fumio SATO ,  Yoko USUI

    IPC: C03C4/02 ,  C03C3/155 ,  C03C3/15 ,  C03C3/253 ,  C03C3/14

    CPC classification number: C03C4/02 ,  C03C3/14 ,  C03C3/15 ,  C03C3/155 ,  C03C3/253

    Abstract: The invention provides an optical glass for press molding which can satisfy all of the following requirements: (1) it contains no environmentally undesirable components; (2) it can easily achieve a low glass transition point; (3) it has a high refractive index and high dispersion; (4) it can easily provide a glass having an excellent visible light transmittance; and (5) it has excellent resistance to devitrification during preparation of a preform. The optical glass for press molding has a refractive index nd of 1.925 or more, an Abbe's number νd of 10 to 30, and a glass composition, in % by mass, of 20 to 80% Bi2O3, 10 to 30% B2O3, and 0 to 5.5% GeO2 and is substantially free of lead component, arsenic component, and F component.

    Abstract translation: 本发明提供了一种用于压制成型的光学玻璃，其可以满足以下所有要求：（1）其不含环境不理想的组分; （2）可以轻松实现玻璃化转变点低; （3）折射率高，色散高; （4）可以容易地提供具有优异的可见光透射率的玻璃; 和（5）在制备预成型件时具有优异的耐失透性。 压模成形用光学玻璃的折射率nd为1.925以上，阿贝数nud为10〜30，玻璃组合物的质量％为20〜80％的Bi2O3，10〜30％的B2O3，0 至5.5％的GeO 2，并且基本上不含铅成分，砷成分和F成分。

    CRYSTALLIZED GLASS
    5.
    发明公开
    CRYSTALLIZED GLASS 审中-公开

    公开(公告)号：US20230312403A1

    公开(公告)日：2023-10-05

    申请号：US18025237

    申请日：2021-10-07

    Applicant: NIPPON ELECTRIC GLASS CO., LTD.

    Inventor： Takahiro MATANO ,  Yuki YOKOTA ,  Atsushi TANAKA ,  Tomonori ICHIMARU ,  Yoshihisa TAKAYAMA ,  Ken YUKI

    IPC: C03C10/00 ,  C03C21/00

    CPC classification number: C03C10/0027 ,  C03C21/002

    Abstract: A crystallized glass contains: from 58 to 70% of SiO2, from 15 to 30% of Al2O3, from 2 to 10% of Li2O, from 0 to 10% of Na2O, from 0 to 10% of K2O, from 0 to 15% of Na2O+K2O, from 0 to 15% of MgO+CaO+SiO+BaO+ZnO, from 0.1 to 6% of SnO2, from 0.5 to 6% of ZrO2, from 0 to 4% of TiO2, and from 0 to 6% of P2O5 in mass %, in which the crystallized glass has a degree of crystallinity of 1 to 95%, and an average visible light transmittance of 50% or greater at a thickness of 0.8 mm and a wavelength of 380 to 780 nm, and a compression stress layer is formed on a surface.

    OPTICAL GLASS
    6.
    发明申请
    OPTICAL GLASS 有权

    公开(公告)号：US20220340475A1

    公开(公告)日：2022-10-27

    申请号：US17616759

    申请日：2020-06-26

    Applicant: Nippon Electric Glass Co., Ltd.

    Inventor： Satoko KONOSHITA ,  Takahiro MATANO

    IPC: C03C3/068 ,  G02B5/20 ,  C03C4/08

    Abstract: The present invention provides an optical glass that has a high refractive index property and excels in a light transmittance property in the visible range and in resistance to devitrification. The optical glass contains from 3 to 18 mass % of SiO2, from 5 to 11.5 mass % of B2O3, from 0 to 7 mass % of Al2O3, from 0 to 11 mass % of CaO, 1 mass % or less of ZnO, from 7 to 20 mass % of TiO2, from 3 to 38 mass % of Nb2O5, from 27 to 49.8 mass % of La2O3, from 6 to 14 mass % of Gd2O3, from 0 to 5 mass % of Y2O3, less than 6 mass % of Ta2O5, and 0.6 mass % or less of WO3, with a ratio of B2O3/SiO2 being from 1 to 2.

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