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    Process for producing preform for glass fiber and process for producing glass fiber
    1.
    发明授权
    Process for producing preform for glass fiber and process for producing glass fiber 失效
    玻璃纤维预成型体的制造方法及玻璃纤维的制造方法

    公开(公告)号：US5958103A

    公开(公告)日：1999-09-28

    申请号：US610956

    申请日：1996-03-05

    申请人： Yoshitaka Yoneda ,  Shozo Morimoto ,  Toshiharu Yamashita

    发明人： Yoshitaka Yoneda ,  Shozo Morimoto ,  Toshiharu Yamashita

    IPC分类号： C03B37/012 ,  C03B37/027 ,  C03C13/04 ,  C03C25/18 ,  C03B37/023 ,  C03B18/00 ,  C03B37/02 ,  C03B37/075

    CPC分类号： C03B37/02754 ,  C03B37/01245 ,  C03B37/027 ,  C03C13/043 ,  C03C25/18 ,  C03B2201/86 ,  C03B2205/08 ,  C03B2205/10 ,  C03B2205/14 ,  C03B2205/16 ,  Y02P40/57 ,  Y10S501/904 ,  Y10T428/2929

    摘要： A process for producing a preform for a chalcogenide glass fiber which comprises inserting a cladding tube having contained therein a chalcogenide glass rod for core into a quartz tube having at its bottom a nozzle having an aperture smaller than the outer diameter of the cladding tube, locally heating the bottom of the quartz tube and pulling the cladding tube having contained the glass rod for core and a process for producing a chalcogenide glass fiber by heating and drawing the preform thus obtained, by which processes the devitrification of glass and the generation of bubbles in the core glass or at the core glass-cladding glass interface can be prevented and the adhesion between the core glass and the cladding glass can be improved. In particular, when the glass material for core does not contain Ge, a chalcogenide glass fiber having such a core-cladding structure that the transmission loss of the glass fiber when infrared light pass through the fiber is small and the mechanical strength is high.

    摘要翻译： 一种硫属化物玻璃纤维预成型体的制造方法，其特征在于，将包含核心的硫属化物玻璃棒的包层管插入石英管，所述石英管的底部具有孔径小于包层管的外径的喷嘴， 加热石英管的底部并拉动包含用于芯的玻璃棒的包层管，以及通过加热和拉伸由此获得的预成型体制造硫族化物玻璃纤维的方法，通过该方法玻璃的失透和气泡的产生 可以防止芯玻璃或核心玻璃 - 包层玻璃界面，并且可以提高芯玻璃和包层玻璃之间的粘合性。 特别是，当核心用玻璃材料不含Ge时，具有这样的芯 - 包层结构的硫族化物玻璃纤维，当红外光通过纤维时，玻璃纤维的透射损失小，机械强度高。

    Faraday rotation single-mode optical fiber
    4.
    发明授权
    Faraday rotation single-mode optical fiber 失效
    法拉第旋转单模光纤

    公开(公告)号：US4726652A

    公开(公告)日：1988-02-23

    申请号：US947396

    申请日：1986-12-29

    申请人： Hidemi Tajima ,  Toshiharu Yamashita ,  Isao Masuda

    发明人： Hidemi Tajima ,  Toshiharu Yamashita ,  Isao Masuda

    IPC分类号： G02B6/00 ,  C03C3/068 ,  C03C13/04 ,  G02B6/02 ,  G02B6/10 ,  G02F1/00 ,  G02F1/09 ,  G02B6/16

    CPC分类号： G02B6/105 ,  C03C13/046 ,  G02F1/0036

    摘要： A Faraday rotation single-mode fiber having a high Verdet constant is disclosed, the core and the cladding of the fiber being made of a glass having the following composition: 26 to 38 mol % SiO.sub.2, 18 to 34 mol % B.sub.2 O.sub.3, 17 to 26 mol % Al.sub.2 O.sub.3, 18 to 32 mol % Tb.sub.2 O.sub.3, 0 to 5 mol % ZrO.sub.2, 0 to 5 mol % Ce.sub.2 O.sub.3, 0 to 5 mol % Pr.sub.2 O.sub.3, 0 to 5 mol % Dy.sub.2 O.sub.3 and 0 to 5 mol % Ho.sub.2 O.sub.3, provided that the total amount of the above ingredients is not less than 97 mol % and the total amount of Ce.sub.2 O.sub.3, Pr.sub.2 O.sub.3, Dy.sub.2 O.sub.3 and Ho.sub.2 O.sub.3 is 0 to 5 mol %.

    摘要翻译： 公开了具有高Verdet常数的法拉第旋转单模光纤，纤芯的芯和包层由具有以下组成的玻璃制成：26至38摩尔％SiO 2，18至34摩尔％B 2 O 3，17至26 摩尔％Al 2 O 3，18〜32摩尔％Tb 2 O 3，0〜5摩尔％ZrO 2，0〜5摩尔％Ce 2 O 3，0〜5摩尔％Pr 2 O 3，0〜5摩尔％Dy 2 O 3和0〜5摩尔％Ho 2 O 3 上述成分的含量不低于97mol％，Ce2O3，Pr2O3，Dy2O3和Ho2O3的总量为0-5mol％。

    Reversible light sensitive glass
    5.
    发明授权
    Reversible light sensitive glass 失效
    可反光敏感玻璃

    公开(公告)号：US4001019A

    公开(公告)日：1977-01-04

    申请号：US457304

    申请日：1974-04-02

    申请人： Toshiharu Yamashita ,  Tetsuro Izumitani

    发明人： Toshiharu Yamashita ,  Tetsuro Izumitani

    IPC分类号： C03C3/091 ,  C03C3/093 ,  C03C4/06 ,  C03C3/08

    CPC分类号： C03C4/06 ,  C03C3/091 ,  C03C3/093 ,  Y10S501/903

    摘要： A reversible light sensitive glass comprising 100 parts of a base glass, 0.15 to 1.0 parts of Ag and an amount of halogen corresponding to or more than to the chemical equivalence of Ag, in which the base glass consists of, by weight %, SiO.sub.2 48 to 62, Al.sub.2 O.sub.3 7 to 15, B.sub.2 O.sub.3 17 to 26, R.sub.2 O (where R represents Na, Li or K) 6 to 16, BaO 0.5 to 5, (BaO/R.sub.2 O 0.05 to 0.40), TiO.sub.2 0 to 10, ZrO.sub.2 0 to 10, Nb.sub.2 O.sub.5 0 to 5, TiO.sub.2 +ZrO.sub.2 +Nb.sub.2 O.sub.5 0.5 to 15, AS.sub.2 O.sub.3 0 to 2.0, and Sb.sub.2 O.sub.3 0 to 2.0 (AS.sub.2 O.sub.3 +Sb.sub.2 O.sub.3

    ADAMANTYL (METH)ACRYLIC MONOMER AND (METH)ACRYLIC POLYMER CONTAINING THE SAME AS REPEATING UNIT
    6.
    发明申请
    ADAMANTYL (METH)ACRYLIC MONOMER AND (METH)ACRYLIC POLYMER CONTAINING THE SAME AS REPEATING UNIT 有权
    丙烯酸（甲基）丙烯酸单体和（甲基）丙烯酸聚合物，含有它们作为重复单元

    公开(公告)号：US20130023638A1

    公开(公告)日：2013-01-24

    申请号：US13637764

    申请日：2011-03-29

    申请人： Kikuo Furukawa ,  Toshiharu Yamashita ,  Yoshio Nishimura

    发明人： Kikuo Furukawa ,  Toshiharu Yamashita ,  Yoshio Nishimura

    IPC分类号： C07C69/54 ,  C08F220/68 ,  C07C67/08 ,  C08F20/68

    CPC分类号： C07C69/54 ,  C07C2603/74 ,  C08F220/18 ,  C08F220/28 ,  G03F7/0397

    摘要： Provided according to the present invention are an adamantyl (meth)acrylate represented by formula (1), having a formazin standard turbidity of less than 1.7 NTU (Nephelometric Turbidity Unit) in methylethylketone or tetrahydrofuran, and also a (meth)acrylic copolymer comprising the adamantyl (meth)acrylate as a repeating unit: (in the formula, R1 represents hydrogen or a methyl group; R2 through R4 each independently represent a hydrogen atom, a hydroxyl group, an alkyl group having a carbon number of 1 to 3, an aryl group, an alkoxy group, an aryloxy group, a halogen group, an alkyl halide group, or a hydroxyalkyl group; and n1 represents 0 or 1).

    摘要翻译： 根据本发明提供的是由式（1）表示的（甲基）丙烯酸金刚烷酯，甲基乙基酮或四氢呋喃中具有小于1.7NTU（比浊法浊度单位）的甲萘醌标准浊度，以及包含 金刚烷基（甲基）丙烯酸酯作为重复单元：（式中，R1表示氢或甲基; R2至R4各自独立地表示氢原子，羟基，碳数为1至3的烷基， 芳基，烷氧基，芳氧基，卤素基，烷基卤基或羟烷基; n1表示0或1）。

    Method of exposure of chemically machineable light-sensitive glass
    8.
    发明授权
    Method of exposure of chemically machineable light-sensitive glass 失效
    化学机械感光玻璃的曝光方法

    公开(公告)号：US4390391A

    公开(公告)日：1983-06-28

    申请号：US384114

    申请日：1982-06-01

    申请人： Yoshimi Fujita ,  Toshiharu Yamashita

    发明人： Yoshimi Fujita ,  Toshiharu Yamashita

    IPC分类号： C03B33/00 ,  B26F1/26 ,  C03C15/00 ,  C03C23/00 ,  B44C1/22 ,  C03C25/06

    CPC分类号： C03C23/002 ,  C03C15/00

    摘要： A method for irradiating a chemically machinable light-sensitive glass plate with a parallel bundle of ultraviolet rays so as to form a tappered polygonal hole in the glass plate. A mask having a regular polygonal opening having n vertexes is mounted on a machinable light-sensitive glass plate and a light source capable of generating a parallel bundle of ultraviolet is disposed so that one of the vertexes of the polygonal opening is positioned at the longest point from the center of the light source. The glass plate is then irradiated. Thereafter, the light source is rotated about a center axis of the opening by an angle equal to 360.degree./n and the glass plate is re-irradiated. This procedure is conducted so that the glass plate is irradiated n times.

    摘要翻译： 一种用化学机械加工的感光玻璃板照射紫外线的方法，以便在玻璃板中形成一个多边形的多孔孔。 具有n个顶点的具有正多边形开口的掩模安装在可加工的感光玻璃板上，并且能够产生平行的紫外线束的光源被设置为使得多边形开口中的一个顶点位于最长点 从光源的中心。 然后照射玻璃板。 此后，光源围绕开口的中心轴线旋转等于360°/ n的角度，并且玻璃板被再次照射。 进行该步骤，使玻璃板照射n次。

    Glass filter for contrast enhancement in CRT displays
    9.
    发明授权
    Glass filter for contrast enhancement in CRT displays 失效
    玻璃过滤器用于CRT显示器中的对比度增强

    公开(公告)号：US4288250A

    公开(公告)日：1981-09-08

    申请号：US132347

    申请日：1980-03-20

    申请人： Toshiharu Yamashita

    发明人： Toshiharu Yamashita

    IPC分类号： H01J29/89 ,  C03C1/10 ,  C03C3/062 ,  C03C3/064 ,  C03C3/095 ,  C03C3/097 ,  C03C3/102 ,  C03C4/08 ,  C03C3/04 ,  C03C3/10 ,  C07C3/08

    CPC分类号： C03C3/095 ,  C03C3/062 ,  C03C4/08

    摘要： A green contrast enhancement filter for CRT display devices which is prepared by adding about 0.1 to 1.5 part by weight of Cr.sub.2 O.sub.3, about 0 to 0.5 part by weight of CuO and about 0 to 0.2 part by weight of NiO to 100 parts by weight of a base glass comprising about 4 to 70% by weight of SiO.sub.2, about 15 to 30% by weight of Nd.sub.2 O.sub.3, about 0 to 25% by weight of one or more alkali metal oxides (R.sub.2 O) and about 0 to 46% by weight of one or more divalent metal oxides (RO) such as MgO, CaO, SrO, BaO, ZnO and PbO, wherein the sum R.sub.2 O+RO is about 10 to 50% by weight, about 0 to 25% by weight B.sub.2 O.sub.3, about 10% by weight or less Al.sub.2 O.sub.3 and about 0 to 10% by weight each of TiO.sub.2, ZrO.sub.2, La.sub.2 O.sub.3, Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5.

    摘要翻译： 一种用于CRT显示装置的绿色对比度增强滤光器，其通过将约0.1至1.5重量份的Cr 2 O 3，约0至0.5重量份的CuO和约0至0.2重量份的NiO加入到100重量份的 包含约4至70重量％的SiO 2，约15至30重量％的Nd 2 O 3，约0至25重量％的一种或多种碱金属氧化物（R 2 O）和约0至46重量％的一种 或更多的二价金属氧化物（RO）如MgO，CaO，SrO，BaO，ZnO和PbO，其中R2O + RO的总和为约10至50重量％，约0至25重量％的B 2 O 3，约10重量％ 重量或更少的Al 2 O 3和约0至10重量％的TiO 2，ZrO 2，La 2 O 3，Nb 2 O 5和Ta 2 O 5。

    Method of manufacturing preform for nonoxide glass fiber
    10.
    发明授权
    Method of manufacturing preform for nonoxide glass fiber 失效
    非氧化玻璃纤维制造方法

    公开(公告)号：US5185021A

    公开(公告)日：1993-02-09

    申请号：US587946

    申请日：1990-09-24

    申请人： Kiyotaka Miura ,  Toshiharu Yamashita

    发明人： Kiyotaka Miura ,  Toshiharu Yamashita

    IPC分类号： G02B6/00 ,  C03B17/02 ,  C03B37/012

    CPC分类号： C03B17/025 ,  C03B37/01274 ,  C03B2201/80 ,  C03B2201/82 ,  C03B2205/04 ,  Y10S65/16

    摘要： In a method of manufacturing a preform for a nonoxide glass fiber, cladding and core glass materials are placed in a cylinder of an extrusion apparatus such that ground end faces of the respective cladding and core glass materials are in contact with each other and such that the cladding glass material is located adjacent a molding section of the extrusion apparatus. The cladding and core glass materials are heated within inert-gas atmosphere, to their respective temperatures equal to or below their respective sag points and equal to or above their respective crystallization start temperatures. An extrusion punch of the extrusion apparatus is pushed within the atmosphere, to extrude the cladding and core glass materials through a molding nozzle in the molding section while the cladding and core glass materials are in fusible contact with each other, thereby forming the preform of a core and cladding structure. The preform is gradually cooled within a liner connected to the molding section within the atmosphere. Alternatively, an over-cladding glass material may be placed in the cylinder such that the over-cladding material is located adjacent the molding section, and the cladding glass material is located between the over-cladding and core glass materials.