Phototropic glass for multifocal spectacle-glasses
    3.
    发明授权
    Phototropic glass for multifocal spectacle-glasses 失效
    用于多焦点眼镜的光转向玻璃

    公开(公告)号:US4149896A

    公开(公告)日:1979-04-17

    申请号:US920086

    申请日:1978-06-28

    Abstract: Glasses are provided which may be made phototropic and which have a thermal coefficient of linear expansion between about 43 and 58.times.10.sup.-7 /.degree. C. and an index of refraction n.sub.d over about 1.60. Such glasses can be employed as near portion glass material in spectacle lens manufacture; thus, such glasses can be fused with known phototropic for portion glass material, for example, of the borosilicate type, to make multifocal glasses useful in spectacle lenses and spectacles.

    Abstract translation: 提供了可以制成光变色并且具有在约43和58×10 -7 /℃之间的线性膨胀的热系数并且折射率nd大于约1.60的玻璃。 这种玻璃可以用作眼镜镜片制造中的近玻璃材料; 因此,这种玻璃可以与用于部分玻璃材料(例如,硼硅酸盐类型)的已知的光致变色物融合,以使多焦点眼镜可用于眼镜镜片和眼镜。

    Chemically hardened spectacle crown glass
    6.
    发明授权
    Chemically hardened spectacle crown glass 失效
    化学硬化眼镜冠玻璃

    公开(公告)号:US3954487A

    公开(公告)日:1976-05-04

    申请号:US515000

    申请日:1974-10-15

    CPC classification number: C03C21/002 C03C3/093 Y10T428/315

    Abstract: A chemically hardened optical crown glass having a refractive index n.sub.d of 1.5225-1,5235, a thermal expansion coefficient in the temperature range between 20.degree. and 300.degree. C. of 90 .times. 10.sup.-.sup.7 to 100 .times. 10.sup.-.sup.7 /.degree.C., a dispersion .gamma.d of 54-60, a softening temperature of 690.degree.-750.degree. C., and a transformation temperature of 480.degree.-550.degree. C., produced by melting, shaping and cooling a batch consisting essentially of the following composition in parts by weight based on 100 parts of total composition: SiO.sub.2, 50.5-61.0; Al.sub.2 O.sub.3, 7.0-17.5; B.sub.2 O.sub.3, 2.0-6.1; Li.sub.2 O, 0-1.0; Na.sub.2 O, 12.0-15.0; K.sub.2 O, 2.5-3.5; CaO, 0-4.1; BaO, 0-0.3; ZnO, 5.0-10.0; PbO, 0-0.5; TiO.sub.2, 0.1-0.9; As.sub.2 O.sub.3, 0-0.5; and Sb.sub.2 O.sub.3, 0-1.0; and thereafter subjected to an ion exchange in which large alkali metal ions are diffused into the glass in exchange for smaller alkali metal ions at a temperature below the upper cooling temperature which corresponds to a viscosity of 10.sup.13 poises.

    Abstract translation: 折射率nd为1.5225-1,5235的化学硬化的光学冠状玻璃,在20℃和300℃之间的温度范围内的热膨胀系数为90×10 -7至100×10 -7 /℃,分散度γd为54-60,软化温度为690℃-750℃,转化温度为480℃-550℃,通过熔融,成形和冷却基本上由 基于100份总组合物的以下组分重量份:SiO 2,50.5-61.0; Al2O3,7.0-17.5; B2O3,2.0-6.1; Li2O,0-1.0; Na2O,12.0-15.0; K2O,2.5-3.5; CaO,0-4.1; BaO,0-0.3; ZnO,5.0-10.0; PbO,0-0.5; TiO2,0.1-0.9; As2O3,0-0.5; 和Sb2O3,0-1.0; 然后在低于对应于1013泊的粘度的上部冷却温度的温度下进行大量碱金属离子扩散到玻璃中以换取较小的碱金属离子的离子交换。

    Flashed glass
    8.
    发明授权
    Flashed glass 失效
    闪光玻璃

    公开(公告)号:US4473612A

    公开(公告)日:1984-09-25

    申请号:US297335

    申请日:1981-08-28

    CPC classification number: C03C3/078 C03C3/085 Y10S428/913 Y10T428/2495

    Abstract: A phototropic multilayered glass sheet incorporating at least two interfacially laminated layers, one layer consisting of a nonphototropic carrier glass, and at least one other layer consisting of a phototropic glass. In manufacture, at least one of the glass streams is characterized by having a viscosity of less than 10.sup.7.6 d PAS at the location where the streams are brought together.

    Abstract translation: 一种掺有至少两个界面层压层的光致变色多层玻璃板,一层由非受光载体玻璃构成,以及至少一层由光热玻璃构成的其它层。 在制造中,至少一个玻璃流的特征在于在流被聚集在一起的位置处具有小于107.6d PAS的粘度。

    Optical fiber wave-guides for signal transmission comprising multiple
component glass with an adjusted expansion co-efficient between the
core and mantle
    10.
    发明授权
    Optical fiber wave-guides for signal transmission comprising multiple component glass with an adjusted expansion co-efficient between the core and mantle 失效
    用于信号传输的光纤波导,包括具有在芯和地幔之间调节的膨胀系数的多组分玻璃

    公开(公告)号:US4194807A

    公开(公告)日:1980-03-25

    申请号:US7310

    申请日:1979-01-29

    Inventor: Georg Gliemeroth

    Abstract: The present invention discloses an optical fiber wave-guide for signal transmission in which the signal fiber has a linear thermal expansion co-efficient in all of the fiber elements above 15.times.10.sup.-7 /.degree.C. in which the outer mantle is composed of the silicon dioxide modified glass, and the optical fiber wave-guide is composed of an inner silicon dioxide-free mantle employing germanium oxide and other components and has an inner silicon dioxide-free core which is composed of germanium oxide and optionally other additives. The fiber is produced according to the chemical vapor deposition process, and preferably has a refractive index gradient which has the shape of a parabola.

    Abstract translation: 本发明公开了一种用于信号传输的光纤波导,其中信号光纤在15×10 -7 /℃以上的所有光纤元件中具有线性热膨胀系数,其中外壳由硅 二氧化硅改性玻璃,并且光纤波导由使用氧化锗和其它组分的内部无二氧化硅层构成,并且具有由氧化锗和任选的其它添加剂组成的内部二氧化硅的芯。 纤维根据化学气相沉积工艺生产,优选具有抛物线形状的折射率梯度。

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