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    GLASS AND OPTICAL ELEMENT
    1.
    发明申请
    GLASS AND OPTICAL ELEMENT 有权

    公开(公告)号：US20220250968A1

    公开(公告)日：2022-08-11

    申请号：US17587298

    申请日：2022-01-28

    Applicant: HOYA CORPORATION

    Inventor： Koichi SATO ,  Yoshitake TANNO ,  Naomi MATSUMOTO

    IPC: C03C3/21 ,  G02B5/00 ,  G02B1/00

    Abstract: Provided is oxide glass in which a content of P5+ is 7 to 43 cation %, a content of Nb ions is 10 to 21 cation %, a content of Li+ is 20 cation % or more, a total content of Nb ions and Li+ is 48 to 70 cation %, a content of Bi ions is more than 0 cation % and is equal to or less than 6 cation %, a content of Ba2+ is 5 cation % or less, a content of Zr4+ is 2 cation % or less, a total content of Ti ions and W ions is 5 cation % or less, and a cation ratio of the content of Li+ to a total content of Li+, Na+, and K+[Li+/(Li++Na++K+)] is 0.5 or more.

    OPTICAL GLASS, PRESS-MOLDING GLASS MATERIAL, OPTICAL ELEMENT AND METHOD OF MANUFACTURING THE SAME, AND BONDED OPTICAL ELEMENT
    4.
    发明申请
    OPTICAL GLASS, PRESS-MOLDING GLASS MATERIAL, OPTICAL ELEMENT AND METHOD OF MANUFACTURING THE SAME, AND BONDED OPTICAL ELEMENT 有权
    光学玻璃，压制玻璃材料，光学元件及其制造方法和粘合光学元件

    公开(公告)号：US20140106174A1

    公开(公告)日：2014-04-17

    申请号：US13650724

    申请日：2012-10-12

    Applicant: HOYA CORPORATION

    Inventor： Kosuke YAMAGUCHI ,  Naomi MATSUMOTO

    IPC: C03C3/064 ,  C03C3/062

    CPC classification number: C03C3/064 ,  C03C3/062 ,  C03C3/068 ,  Y10S501/901

    Abstract: An aspect of the present invention relates to an optical glass, which comprises, denoted as weight percent, 2 to 37 percent of SiO2, 0 to 25 percent of B2O3, 0 to 10 percent of GeO2, 18 to 55 percent of a combined content of Li2O, Na2O, K2O, CaO, SrO, and BaO, and 27 to 55 percent of a combined content of TiO2, Nb2O5, and WO3, wherein the weight ratio of SiO2 content relative to a combined content of SiO2 and B2O3 ranges from 0.1 to 1, a weight ratio of the Li2O content to a combined content of Li2O, Na2O, K2O, CaO, SrO, and BaO ranges from 0 to 0.4, and a weight ratio of TiO2 content relative to a combined content of TiO2, Nb2O5, and WO3 ranges from 0.35 to 1, with a refractive index nd of 1.860 to 1.990 and an Abbé number νd of 21 to 29.

    Abstract translation: 本发明的一个方面涉及一种光学玻璃，其包括以重量％表示2至37％的SiO 2，0至25％的B 2 O 3，0至10％的GeO 2，18至55％的组合含量 Li 2 O，Na 2 O，K 2 O，CaO，SrO和BaO以及TiO 2，Nb 2 O 5和WO 3的组合含量的27〜55％，其中SiO 2含量相对于SiO 2和B 2 O的组合含量的重量比为0.1〜 如图1所示，Li 2 O含量与Li 2 O，Na 2 O，K 2 O，CaO，SrO和BaO的组合含量的重量比为0〜0.4，TiO 2含量相对于TiO 2，Nb 2 O 5和 WO3的范围为0.35至1，折射率nd为1.860至1.990，Abbé数n为21至29。

    GLASS FOR MAGNETIC RECORDING MEDIUM SUBSTRATE, GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, AND THEIR USE
    5.
    发明申请
    GLASS FOR MAGNETIC RECORDING MEDIUM SUBSTRATE, GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, AND THEIR USE 有权
    用于磁记录介质基板的玻璃，用于磁记录介质的玻璃基板及其使用

    公开(公告)号：US20130343166A1

    公开(公告)日：2013-12-26

    申请号：US13839484

    申请日：2013-03-15

    Applicant: HOYA CORPORATION

    Inventor： Naomi MATSUMOTO ,  Kazuaki HASHIMOTO

    IPC: G11B5/73

    CPC classification number: G11B5/7315 ,  G11B5/8404 ,  Y10T428/24355 ,  Y10T428/315

    Abstract: An aspect of the present invention relates to glass for a magnetic recording medium substrate, which comprises essential components in the form of SiO2, Li2O, Na2O, and one or more alkaline earth metal oxides selected from the group consisting of MgO, CaO, SrO, and BaO wherein a molar ratio of a content of CaO to a combined content of MgO, CaO, SrO, and BaO (CaO/(MgO+CaO+SrO+BaO)) is equal to or less than 0.20, and which has a glass transition temperature of equal to or higher than 650° C.

    Abstract translation: 本发明的一个方面涉及一种用于磁记录介质基板的玻璃，其包括SiO 2，Li 2 O，Na 2 O以及一种或多种选自MgO，CaO，SrO等的一种或多种碱土金属氧化物的主要成分， 和BaO，其中CaO的含量与MgO，CaO，SrO和BaO（CaO /（MgO + CaO + SrO + BaO）的组合含量）的摩尔比等于或小于0.20，并且具有玻璃 转变温度等于或高于650℃

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