Lightweight, high refractive index glasses for spectacle lenses
    2.
    发明授权
    Lightweight, high refractive index glasses for spectacle lenses 失效
    眼镜镜片重量轻,高折射率眼镜

    公开(公告)号:US4213786A

    公开(公告)日:1980-07-22

    申请号:US45612

    申请日:1979-06-05

    摘要: A glass having a high refractive index, preferably >1.77, and a low specific gravity, preferable .ltoreq.3.8, is provided for utilization as spectacle lenses. The glass consists essentially of 80 mol percent or more of light cationic oxides with the remainder being cationic oxides having a greater molecular weight. It has a high crystallization stability in a viscosity range >200 poises and an expansion coefficient .alpha..times.10.sup.7 between 20.degree.-300.degree. C. of .ltoreq.100. Sufficiently light in weight to be well-suited for use as spectacle lenses, the glass can be continuously produced, as it has no pronounced tendency toward crystallization. The resulting corrective optical lenses have relatively high dioptric values, even with small center and edge thicknesses.

    摘要翻译: 提供折射率高,优选> 1.77,低比重,优选 200泊的粘度范围和20°-300℃之间的膨胀系数α×107的<100%之间具有高结晶稳定性。 足够轻的重量非常适合用作眼镜镜片,可以连续生产玻璃,因为它没有显着的结晶倾向。 所得到的校正光学透镜具有相对高的屈光度值,即使具有小的中心和边缘厚度。

    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

    摘要: 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.

    摘要翻译: 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。

    Compatible near-portion phototropic glass
    4.
    发明授权
    Compatible near-portion phototropic glass 失效
    兼容近部分光热玻璃

    公开(公告)号:US3999996A

    公开(公告)日:1976-12-28

    申请号:US680750

    申请日:1976-04-27

    摘要: Glass as near-portion material for fusion with known phototropic far-portion glasses for multifocal spectacle lenses has a linear thermal expansion coefficient between 45 and 58 .times. 10.sup.-.sup.7 /.degree. C, a refractive index of n.sub.d .gtoreq.1.60, a speed of crystallization of less than 0.5 .mu./min., and the following composition:______________________________________ SiO.sub.2 10.0 - 20.0 % by weight B.sub.2 O.sub.3 15.0 - 23.0 % by weight PbO >26.0 - 30.0 % by weight ZnO 3.0 - 5.0 % by weight La.sub.2 O.sub.3 6.0 - 10.0 % by weight Al.sub.2 O.sub.3 12.0 - 17.0 % by weight ZrO.sub.2 0.5 - 3.0 % by weight TiO.sub.2 0.2 - 3.0 % by weight K.sub.2 O 0.1 - 2.0 % by weight Na.sub.2 O 0.1 - 2.0 % by weight Li.sub.2 O 0.1 - 4.0 % by weight ______________________________________ With the provision that:______________________________________ sum of SiO.sub.2 + B.sub.2 O.sub.3 is 30.0 - 40.0 % by weight sum of the alkali oxides is 0.2 - 3.0 % by weight sum of Al.sub.2 O.sub.3 + La.sub.2 O.sub.3 is 19.0 - 27.0 % by weight sum of the alkaline earth oxides is 3.0 - 8.0 % by weight, MgO being less than 5 % by weight and BaO being 3 - 8 % by weight sum of ZnO + ZrO.sub.2 + TiO.sub.2 is 3.0 - 6.0 % by weight sum of the oxides of Bi, Ta, Nb, W is 0 - 5.0 % by weight. ______________________________________

    摘要翻译: 玻璃作为用于与多焦点眼镜片的已知光致变色远端眼镜融合的近部分材料具有45至58×10 -7 /℃之间的线性热膨胀系数,nd> / = 1.60的折射率,a 结晶速度小于0.5微米/分钟,组成如下:} SiO 2 10.0〜20.0重量%} B 2 O 3 15.0〜23.0重量%} PbO> 26.0〜30.0重量%} ZnO 3.0〜5.0重量% } La 2 O 3 6.0〜10.0重量%} Al 2 O 3 12.0〜17.0重量%} ZrO 2 0.5〜3.0重量%·TiO 2 0.2〜3.0重量%·K 2 O 0.1〜2.0重量%·Na 2 O 0.1〜2.0重量%·Li 2 O 0.1〜4.0重量%},其中:SiO 2 + B 2 O 3的重量比为30.0〜40.0重量%}碱金属氧化物的总量为0.2〜3.0重量%} Al 2 O 3 + La 2 O 3的和为19.0〜27.0质量% 碱土金属氧化物的重量和总量为3.0〜8.0重量%,MgO}小于} 5重量%},BaO}为3〜8重量%} ZnO + ZrO 2 + TiO 2的总和为3.0〜 6.0%(重量)} Bi,Ta,Nb,W的氧化物为0-5.0重量%。 }

    Chemically stable optical glass
    6.
    发明授权
    Chemically stable optical glass 失效
    化学稳定的光学玻璃

    公开(公告)号:US3970466A

    公开(公告)日:1976-07-20

    申请号:US597092

    申请日:1975-07-18

    申请人: Marga Faulstich

    发明人: Marga Faulstich

    CPC分类号: C03C3/068 Y10S501/903

    摘要: Optical glass, nd = 1.650 .+-. 2 .times. 10.sup..sup.-3 and vd = 55.5 .+-. 1.0, having a high chemical stability and a sufficiently low tendency toward crystallization that it can be manufactured in a continuous tank melting process into gobs, pressed components, and other formed articles as a mass-produced glass, said glass consisting essentially of, in percent by weight: SiO.sub.2 33.0 .+-. 0.5 B.sub.2 O.sub.3 11.6 .+-. 0.5 BaO 36.6 .+-. 1.0 La.sub.2 O.sub.3 14.0 .+-. 2.5 ZrO.sub.2 4.0 .+-. 2.5 As.sub.2 O.sub.3 0 - 0.5. or Sb.sub.2 O.sub.3

    摘要翻译: 光学玻璃,nd = 1.650 +/- 2×10 -3,vd = 55.5 +/- 1.0,具有高化学稳定性和足够低的结晶倾向,可以在连续槽熔化过程中制成料滴 ,压制组分和其它成型制品作为批量生产的玻璃,所述玻璃基本上由以重量百分数组成:} SiO 2 33.0 +/- 0.5} B 2 O 3 11.6 +/- 0.5} BaO 36.6 +/- 1.0} La 2 O 3 14.0 +/- 2.5} ZrO 2 4.0 +/- 2.5} As 2 O 3} 0-0.5。 }或Sb2O3}

    Optical glass having n.sub.D =1.63.+-.(1.5.times.10.sup.-2), v.sub.D
=59.5.+-.1.0  with a high chemical stability and a low tendency to
crystallization
    7.
    发明授权
    Optical glass having n.sub.D =1.63.+-.(1.5.times.10.sup.-2), v.sub.D =59.5.+-.1.0 with a high chemical stability and a low tendency to crystallization 失效
    nD = 1.63 +/-(1.5×10 -2),vD = 59.5 +/- 1.0,具有高化学稳定性和低结晶倾向的光学玻璃

    公开(公告)号:US4343908A

    公开(公告)日:1982-08-10

    申请号:US221110

    申请日:1980-12-29

    IPC分类号: C03C3/068 C03C3/08

    CPC分类号: C03C3/068 Y10S501/903

    摘要: An optical glass having n.sub.D =1.63.+-.(1.5.times.10.sup.-2), v.sub.D =59.5.+-.1.0, a high chemical stability and a low tendency to crystallization is provided, consisting essentially of (in percent. by weight):______________________________________ SiO.sub.2 23-27 B.sub.2 O.sub.3 24-30 SrO 18-31 La.sub.2 O.sub.3 10-16 Al.sub.2 O.sub.3 2-4 BaO 0-10 CaO 0-5 ZnO 0-6 Y.sub.2 O.sub.3 0-5 ZrO.sub.2 0-2 Li.sub.2 O, Na.sub.2 O and/or K.sub.2 O 0-1.5 As.sub.2 O.sub.3 and/or Sb.sub.2 O.sub.3 0-1 F and/or Cl 0-1, ______________________________________ wherein the sum of SiO.sub.2 +B.sub.2 O.sub.3 is 50-53, the weight ratio SiO.sub.2 :B.sub.2 O.sub.3 is 0.8-1.0, the sum SrO+BaO is 26-31, and the sum ZnO+La.sub.2 O.sub.3 is 12-17.

    摘要翻译: 具有nD = 1.63 +/-(1.5×10 -2),v D = 59.5 +/- 1.0的光学玻璃,提供高的化学稳定性和低的结晶倾向,基本上由(以重量百分比计): SiO 2 23-27 -B 2 O 3 24-30 -SrO 18-31 -La 2 O 3 10-16 -Al 2 O 3 2-4 -BaO 0-10 -CaO 0-5 -ZnO 0-6-Y 2 O 3 0-5 -ZrO 2 0-2 - Li 2 O,Na 2 O和/或K 2 O 0-1.5 -As 2 O 3和/或Sb 2 O 3 0-1 -F和/或Cl 0-1,其中SiO 2 + B 2 O 3的总和为50-53,SiO 2 :B 2 O 3的重量比为0.8 -1.0,SrO + BaO之和为26-31,ZnO + La2O3为12-17。

    Low loss glass suitable for optical fiber
    8.
    发明授权
    Low loss glass suitable for optical fiber 失效
    低损玻璃适用于光纤

    公开(公告)号:US4099834A

    公开(公告)日:1978-07-11

    申请号:US527152

    申请日:1974-11-25

    CPC分类号: C03C3/07 C03C13/046 C03C3/102

    摘要: A glass when in the form of an optical fiber having an optical loss of not more than 150 dB/km, high transparency, a high numerical aperture, and a high flexural strength, said glass being especially suitable for optical fibers and consisting essentially of:SiO.sub.2 : 65 - 75 mol-%; (38 - 46% by weight);R.sub.2 o: 4 - 17 mol-%; (4 - 13% by weight);PbO: 16 - 25 mol-%; (42 - 55% by weight); wherein R.sub.2 O is Na.sub.2 O, K.sub.2 O or Cs.sub.2 O or mixtures thereof, preferably not more than 3.0 mol % Na.sub.2 O, and with the provision that the molar ratio of SiO.sub.2 : PbO is 2.5 - 4.0.

    摘要翻译: 玻璃当具有光损耗不超过150dB / km,高透明度,高数值孔径和高弯曲强度的光纤形式时,特别适用于光纤并且由以下组成:

    Optical glass
    9.
    发明授权
    Optical glass 失效
    光学玻璃

    公开(公告)号:US4076647A

    公开(公告)日:1978-02-28

    申请号:US598137

    申请日:1975-07-22

    CPC分类号: C03C3/16 Y10S501/903

    摘要: An optical glass with a path length independent of temperature comprises between 40 and 55% by weight P.sub.2 O.sub.5, between 40 and 54% by weight BaO and between 6 and 12% by weight Nb.sub.2 O.sub.5. Part of the BaO may be replaced by SrO or CaO. Minor amounts of SiO.sub.2 or B.sub.2 O.sub.3 may be included as may other metal oxides such as ZnO, Sb.sub.2 O.sub.3 and La.sub.2 O.sub.3.

    摘要翻译: 具有独立于温度的路径长度的光学玻璃包含40至55重量%的P 2 O 5,40至54重量%的BaO和6至12重量%的Nb 2 O 5。 BaO的一部分可以被SrO或CaO代替。 可以包括少量的SiO 2或B 2 O 3,如其它金属氧化物如ZnO,Sb 2 O 3和La 2 O 3。