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    • 94. 发明申请
    • Optical glass and optical part
    • 光学玻璃和光学部件
    • US20030032542A1
    • 2003-02-13
    • US10106821
    • 2002-03-27
    • Michio Endo
    • C03C003/15C03C003/068
    • C03C3/068C03C3/155Y10S501/901
    • An optical glass that substantially does not contain any Ta2O5 and has high-refractivity low-dispersion optical properties and various optical parts made of such optical glass are provided stably at a low cost, and an optical part made thereof is provided, the optical glass having a glass composition comprising, by weight %, 0 to 7% of SiO2, 18 to 30% of B2O3, provided that the total content of SiO2 and B2O3 is 23 to 35%, 2 to 10% of ZnO, 30 to 50% of La2O3, 0 to 20% of Gd2O3, 0 to 20% of Y2O3, provided that the total content of La2O3, Gd2O3 and Y2O3 is 45 to 60%, 3 to 8% of ZrO2 and 3 to 12% of Nb2O5, the total content of these components being at least 95% by weight, the optical glass having a refractive index nullndnull and an Abbe's number nullnulldnull which satisfy specified relational expressions.
    • 以低成本稳定地提供基本上不含有Ta 2 O 5并具有高折射率低分散光学性能的光学玻璃和由这种光学玻璃制成的各种光学部件,并且提供由其制成的光学部件,所述光学玻璃具有 SiO 2和B 2 O 3的总含量为23〜35%,ZnO为2〜10%,ZnO为30〜50%,SiO 2为0〜7%,B 2 O 3为30〜50% La 2 O 3,0〜20%的Gd 2 O 3,0〜20%的Y 2 O 3,条件是La 2 O 3,Gd 2 O 3和Y 2 O 3的总含量为45〜60%,3〜8%的ZrO 2和3〜12%的Nb 2 O 5, 这些组分的重量百分比为至少95重量%,光学玻璃的折射率[nd]和阿贝数[nud]满足规定的关系式。
    • 99. 发明授权
    • Optical glass of negative anomalous partial dispersion in the blue region
    • 蓝色区域阴性异常分布的光学玻璃
    • US5137850A
    • 1992-08-11
    • US641751
    • 1991-01-16
    • Marc ClementVolkmar GeilerDanuta Grabowski
    • Marc ClementVolkmar GeilerDanuta Grabowski
    • C03C3/072C03C3/074C03C3/14C03C3/145C03C3/15C03C3/155C03C4/00
    • C03C3/072C03C3/074C03C3/142C03C3/155Y10S501/901Y10S501/903
    • A chemically resistant glass which can be produced at relatively low melting temperatures and has anomalous negative partial dispersion P.sub.g,F, a refractive index n.sub.d of from 1.73 to 1.83 and an Abbe coefficient v.sub.d of from 31 to 38 preferably contains (in % by weight, based on oxides):______________________________________ 0-4 SiO.sub.2 + GeO.sub.2 0-2 GeO.sub.2 0-10 MgO 26-33 B.sub.2 O.sub.3 0-1 Li.sub.2 O 0-16 CaO 19-50 PbO 0-1 Na.sub.2 O 0-16 BaO 1-6 ZrO.sub.2 0-1 K.sub.2 O 0-16 SrO 4-16 Ta.sub.2 O.sub.5 0-2 .SIGMA. alkaline earth 0-6 Al.sub.2 O.sub.3 metal oxides 0-16 ZnO 0-4 TiO.sub.2 1.5-20 .SIGMA. alkaline earth metal oxides + ZnO 0-1 WO.sub.3 0-11 La.sub.2 O.sub.3 0-7 Nb.sub.2 O.sub.5 0-5.5 Y.sub.2 O.sub.3 0-5.5 Gd.sub.2 O.sub.3 4-11 .SIGMA. La.sub.2 O.sub.3 + Y.sub.2 O.sub.3 + Gd.sub.2 O.sub.3 ______________________________________ with the proviso that the .SIGMA.(SiO.sub.2 +GeO.sub.2 +B.sub.2 O.sub.3)/.SIGMA.(ta.sub.2 O.sub.5 +ZrO.sub.2 +HfO.sub.2) ratio is less than 5 and the PbO/.SIGMA.(SiO.sub.2 +GeO.sub.2 +B.sub.2 O.sub.3) ratio is less than 1.7, and, if desired, conventional refining assistants.
    • 可以在相当低的熔融温度下产生并且具有异常负部分分散度Pg,F,1.73至1.83的折射率nd和31至38的阿贝系数vd的耐化学腐蚀性玻璃优选含有(以重量%计, 基于氧化物):-0-4SiO 2 + GeO 2 0-2 GeO 2 0-10 MgO -26-33 B 2 O 3 0-1 Li 2 O 0-16 CaO-19-50 PbO 0-1 Na 2 O 0-16 BaO -1-6 ZrO2 0-1 K2O 0-16 SrO - 4-16 Ta2O5 0-2 SIGMA碱土-0-6 Al2O3金属氧化物0-16 ZnO -0-4 TiO2 1.5-20 SIGMA碱土金属氧化物+ ZnO -0-1 WO3 0-11 La2O3 -0-7 Nb2O5 0-5.5 Y2O3-0-5.5 Gd2O3 -4-11 SIGMA La2O3 + Y2O3 + Gd2O3 - 条件是SIGMA(SiO2 + GeO2 + B2O3)/ SIGMA(ta2O5 + ZrO2 + HfO 2)比小于5,PbO / SIGMA(SiO 2 + GeO 2 + B 2 O 3)比小于1.7,如果需要,常规精制助剂。