Glasses with a high refractive index and their use as segments of
multifocal corrective lenses
    1.
    发明授权
    Glasses with a high refractive index and their use as segments of multifocal corrective lenses 有权
    具有高折射率的眼镜及其作为多焦点矫正镜片的部分使用

    公开(公告)号:US6046123A

    公开(公告)日:2000-04-04

    申请号:US155239

    申请日:1998-09-22

    CPC分类号: C03C3/072 Y10S501/903

    摘要: The invention concerns glasses characterized by the fact that they have a refractive index higher than 1.740; a dilatation coefficient .alpha., between 25 and 300.degree. C., between 65 and 70.times.10.sup.-7 /.degree.C.; and a Littleton point not exceeding 635.degree. C. but higher than 600.degree. C.; they have the following composition, expressed in weight percent of oxides:______________________________________ SiO.sub.2 23-32.0 Al.sub.2 O.sub.3 1.5-5.0 B.sub.2 O.sub.3 5-9.0 PbO 43-54.0 Li.sub.2 O 0-0.5 Na.sub.2 O 0-1.0 K.sub.2 O 0-1.0 with Li.sub.2 O + Na.sub.2 O + K.sub.2 O

    摘要翻译: PCT No.PCT / US97 / 04984第 371日期:1998年9月22日 102(e)日期1998年9月22日PCT 1997年3月25日PCT公布。 第WO97 / 36834号公报 日期1997年10月9日本发明涉及其折射率高于1.740的事实, 在25和300℃之间,在65和70×10 -7 /℃之间的膨胀系数α。 Littleton点不超过635℃,但高于600℃。 它们具有如下组成,以氧化物的重量百分比表示: - SiO2 23-32.0 - Al2O3 1.5-5.0 - B2O3 5-9.0 - PbO 43-54.0 - Li2O 0-0.5 - Na2O 0-1.0 - K2O 0-1.0 - 与 Li2O + Na2O + K2O <1.0-BaO + SrO 4-9.0-TiO2 0-4.0-ZrO2 0-2.0-La2O3 0-3.0-Nb2O5 0-3.0-As2O3 0-0.3-Sb2O3 0-0.4 - 与ZrO2 + La2O3 + Nb2O5 1.5-4.0 - 用于生产用于制造多焦点镜片的片段,特别是光致变色。

    Organic lens molds in inorganic glass and novel inorganic glasses
    2.
    发明授权
    Organic lens molds in inorganic glass and novel inorganic glasses 失效
    无机玻璃和新型无机眼镜中的有机镜片模具

    公开(公告)号:US06436858B1

    公开(公告)日:2002-08-20

    申请号:US09403737

    申请日:2000-01-04

    IPC分类号: C03C3093

    摘要: The principal object of the present invention is organic lens molds, constituted wholly or in part of at least one specific inorganic glass, advantageously strengthened by a chemical tempering or a thermal tempering. Said glass has the following composition, expressed in percentages by weight: SiO2 56-66, Al2O3 2.5-10, B2O3 0.5-7, Li2O 0-3, Na2O 8-15, K2O 3-12, with Li2O+Na2O+K2O 12-20, ZnO 2-12, MgO 0-3, TiO2 0-0.5, ZrO2 1-9, CaO 0-1, BaO 0-2, SrO 0-2, with MgO+CaO+SrO+BaO 0-5, Cl 0-0.5, As2O3+sb2O3 0-1. The invention also deals with novel inorganic glasses which have the above composition with a single exception relative to the Al2O3 content: Al2O3 2.5-4.

    摘要翻译: 本发明的主要目的是有机透镜模具,全部或部分由至少一种特定的无机玻璃构成,有利于通过化学回火或热回火加强。 所述玻璃具有以重量百分数表示的以下组成:SiO 2 56-66,Al 2 O 3 2.5-10,B 2 O 3 0.5-7,Li 2 O 0-3,Na 2 O 8-15,K 2 O 3-12,Li 2 O + Na 2 O + K 2 O 12 -20,ZnO 2-12,MgO 0-3,TiO 2 0-0.5,ZrO 2 1-9,CaO 0-1,BaO 0-2,SrO 0-2,MgO + CaO + SrO + BaO 0-5, Cl 0-0.5,As2O3 + sb2O3 0-1。 本发明还涉及具有上述组成的新型无机玻璃,相对于Al 2 O 3含量为单一例外:Al 2 O 3 2.5-4。

    Lead-free enamel compositions for the decoration of low-expansion
glass-ceramics
    3.
    发明授权
    Lead-free enamel compositions for the decoration of low-expansion glass-ceramics 失效
    用于装饰低膨胀玻璃陶瓷的无铅搪瓷组合物

    公开(公告)号:US5326728A

    公开(公告)日:1994-07-05

    申请号:US134664

    申请日:1993-10-12

    摘要: This invention is directed to the production of lead-free enamels containing finely-divided glass particles, finely-divided pigment particles, and an organic binder wherein the glass particles consist essentially, expressed in terms of weight percent on the oxide basis, of______________________________________ SiO.sub.2 35-50 Li.sub.2 O + Na.sub.2 O + K.sub.2 O

    摘要翻译: 本发明涉及生产含有细碎玻璃颗粒,细碎颜料颗粒和有机粘合剂的无铅搪瓷,其中玻璃颗粒基本上以氧化物的重量百分比表示,包括-SiO 2 35-50 Li2O + Na2O + K2O <8-B2O3 23-30 CaO 1-5 -Al2O3 10-22 CaO + MgO + ZnO + BaO + SrO <7 -Li2O 1-3 TiO2 0-2 -Na2O 0-3 ZrO2 0-5 -K2O 2-5 - 所述玻璃的软化温度TL高于650℃,热膨胀系数低于60×10 -7 /℃。其他应用中,所述玻璃可用于低膨胀玻璃的装饰 - 陶瓷烹饪板。

    Transparent glass-ceramic articles
    4.
    发明授权
    Transparent glass-ceramic articles 失效
    透明玻璃陶瓷制品

    公开(公告)号:US5070045A

    公开(公告)日:1991-12-03

    申请号:US620091

    申请日:1990-11-30

    CPC分类号: C03C10/0027 C03C10/0045

    摘要: This invention is principally directed to the preparation of transparent glass-ceramic articles which, when very rapidly crystallized in situ from precursor glass articles in plate form, exhibit very minimal distortion. The glass-ceramic articles contain .beta.-quartz solid solution as the predominant crystal phase and consist essentially, in weight percent, of______________________________________ SiO.sub.2 65-70 MgO + BaO + SrO 1.1-2.3 Al.sub.2 O.sub.3 18-19.8 ZrO.sub.2 1.0-2.5 Li.sub.2 O 2.5-3.8 As.sub.2 O.sub.3 0-1.5 MgO 0.55-1.5 Sb.sub.2 O.sub.3 0-1.5 ZnO 1.2-2.8 As.sub.2 O.sub.3 + Sb.sub.2 O.sub.3 0.5-1.5 TiO.sub.2 1.8-3.2 Na.sub.2 O 0- 1.8 5.2MgO ______________________________________ The preferred glass-ceramics contain 0.1-1.0% V.sub.2 O.sub.5.

    Colorless ophthalmic glasses
    6.
    发明授权
    Colorless ophthalmic glasses 失效
    无色眼镜

    公开(公告)号:US5525553A

    公开(公告)日:1996-06-11

    申请号:US465204

    申请日:1995-06-05

    IPC分类号: C03C3/095 C03C3/093 C03C4/00

    CPC分类号: C03C3/095 Y10S501/903

    摘要: This invention is directed to the production of glasses useful for ophthalmic applications which exhibit excellent resistance to the development of coloration upon being exposed to x-radiation and excellent resistance to the development of solarization. The glass compositions are essentially free of lead and consist essentially, in weight percent, of______________________________________ SiO.sub.2 60-70 ZrO.sub.2 0.5-2 TiO.sub.2 0-1.5 B.sub.2 O.sub.3 0.5-5 CeO.sub.2 0.1-0.3 Sb.sub.2 O.sub.3 0-0.5 Al.sub.2 O.sub.3 2-6 Li.sub.2 O 0-2 SO.sub.3 0-0.3 Na.sub.2 O 9-14 MgO 0-5 Br 0-0.5 K.sub.2 O 3-10 SrO 0-5 Cl 0-0.5 CaO 0.5-4 BaO 0-5 F 0-0.5. ZnO 3-9 ______________________________________

    摘要翻译: 本发明涉及可用于眼科应用的玻璃的制备,其在暴露于x辐射时表现出优异的耐着色性的发展,并且具有优异的耐晒性发展。 玻璃组合物基本上不含铅,并且基本上以重量百分比计的-SiO 2 60-70 ZrO 2 0.5-2 TiO 2 0-1.5 -B 2 O 3 0.5-5 CeO 2 0.1-0.3 Sb 2 O 3 0-0.5 -Al 2 O 3 2-6 Li 2 O 0 -2 SO3 0-0.3 -Na2O 9-14 MgO 0-5 Br 0-0.5 -K2O 3-10 SrO 0-5 Cl 0-0.5 -CaO 0.5-4 BaO 0-5 F 0-0.5。 -ZnO 3-9 -