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    OPTICAL GLASS FOR MOLD PRESS FORMING
    12.
    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。

    INFRARED IMAGING LENS
    13.
    发明公开
    INFRARED IMAGING LENS 审中-公开

    公开(公告)号：US20240288672A1

    公开(公告)日：2024-08-29

    申请号：US18571383

    申请日：2022-07-08

    Applicant: Nippon Electric Glass Co., Ltd.

    Inventor： Yoshimasa MATSUSHITA ,  Fumio SATO ,  Nobuo HORI

    IPC: G02B13/14 ,  G02B13/18

    CPC classification number: G02B13/14 ,  G02B13/18

    Abstract: Provided is a telephoto lens which is excellent in resolution. An infrared imaging lens (1) includes a first lens (L1), a second lens (L2), and a third lens (L3) each of which is made of chalcogenide glass having a refractive index of 2.5 to 4.0 measured at a wavelength of 10 μm, the infrared imaging lens (1) having a total system focal length not less than two times larger than a diameter of an image circle of the infrared imaging lens (1).

    GLASS MATERIAL PRODUCTION METHOD
    16.
    发明申请
    GLASS MATERIAL PRODUCTION METHOD 审中-公开

    公开(公告)号：US20180127301A1

    公开(公告)日：2018-05-10

    申请号：US15565471

    申请日：2015-06-10

    Applicant: NIPPON ELECTRIC GLASS CO., LTD. ,  The University of Tokyo

    Inventor： Fumio SATO ,  Tomoko YAMADA ,  Hiroyuki INOUE ,  Atsunobu MASUNO

    IPC: C03B40/04 ,  C03B5/235 ,  C03B19/10

    CPC classification number: C03B40/04 ,  C03B5/235 ,  C03B19/063 ,  C03B19/1005

    Abstract: The development of cracks or breakage in a glass material during production of the glass material by a containerless levitation technique is reduced. A glass material is obtained by heating a levitated block 12 of glass raw material to melting by irradiation of the block 12 of glass raw material with laser light to thus obtain a molten glass and then cooling the molten glass. A first irradiation step and a second irradiation step are performed. In the first irradiation step, the levitated block 12 of glass raw material is heated to melting by irradiating the block 12 of glass raw material with the laser light. In the second irradiation step, an intensity of the laser light being applied to the molten glass is reduced and irradiation with the laser light is then stopped.

    METHOD FOR MANUFACTURING GLASS MATERIAL AND DEVICE FOR MANUFACTURING GLASS MATERIAL
    17.
    发明申请
    METHOD FOR MANUFACTURING GLASS MATERIAL AND DEVICE FOR MANUFACTURING GLASS MATERIAL 审中-公开

    公开(公告)号：US20170158549A1

    公开(公告)日：2017-06-08

    申请号：US15316590

    申请日：2015-05-29

    Applicant: NIPPON ELECTRIC GLASS CO., LTD.

    Inventor： Tomoko YAMADA ,  Fumio SATO

    IPC: C03B32/00

    Abstract: Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. A block (12) of glass raw material is heated and melted by irradiation with a plurality of laser beams with the block (12) of glass raw material held levitated, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. The plurality of laser beams include a first laser beam (13A) and a second laser beam (13B). A size (θ) of an angle formed between the first laser beam (13A) and the second laser beam (13B) is 0° or more but less than 180°. A center (C1) of a spot (S1) of the first laser beam (13A) on the surface of the block (12) of glass raw material and a center (C2) of a spot (S2) of the second laser beam (13B) on the surface of the block 12 of glass raw material are different from each other.

    INFRARED-TRANSMITTING GLASS
    18.
    发明申请
    INFRARED-TRANSMITTING GLASS 审中-公开

    公开(公告)号：US20170153141A1

    公开(公告)日：2017-06-01

    申请号：US15319403

    申请日：2015-08-04

    Applicant: NIPPON ELECTRIC GLASS CO., LTD.

    Inventor： Fumio SATO ,  Yoshimasa MATSUSHITA

    IPC: G01J1/04 ,  C03C4/10 ,  C03C3/12

    Abstract: Provided is a novel infrared-transmitting glass that can be vitrified without containing any environmentally harmful compound and has high light transmissivity from visible range to a mid-infrared range of wavelengths of about 4 to about 8 μm. An infrared-transmitting glass containing, in % by mole, 50% or more TeO2, 0 to 45% (exclusive of 0%) ZnO, and 0 to 50% (exclusive of 0% and 50%) RO (where R is at least one selected from the group consisting of Ca, Sr, and Ba).

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