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1.发明申请OPTICAL GLASS, PRESS-MOLDING GLASS MATERIAL, OPTICAL ELEMENT AND PROCESS FOR PRODUCING THE SAME 有权光学玻璃，压模玻璃材料，光学元件及其制造方法公开(公告)号：US20110077142A1
公开(公告)日：2011-03-31
申请号：US12893188
申请日：2010-09-29
申请人： Kosuke YAMAGUCHI , Yoichi Hachitani
发明人： Kosuke YAMAGUCHI , Yoichi Hachitani
摘要： A high-refractivity low-dispersion optical glass of which the Ta2O5 content is suppressed is provided, the optical glass comprising, by mass %, 1 to 30% of B2O3, 0.1 to 20% of SiO2, 55 to 75% of a total of La2O3, Gd2O3, Y2O3 and Yb2O3, the content of La2O3 being 15 to 55%, the mass ratio of the content of Gd2O3 to the total content of La2O3, Gd2O3, Y2O3 and Yb2O3, Gd2O3/La2O3+Gd2O3+Y2O3+Yb2O3), being 0.17 to 0.65, 0 to 13% of Ta2O5 (exclusive of 13%), and 0 to 25% of a total of Nb2O5, TiO2, WO3 and ZrO2, the content of Nb2O5 being less than 10%, and having a refractive index nd of 1.83 to 1.92 and an Abbe's number νd of 36 to 45.
摘要翻译： 提供了抑制Ta 2 O 5含量的高折射率低分散度光学玻璃，所述光学玻璃以质量％计含有1〜30％的B 2 O 3，0.1〜20％的SiO 2，55〜75％ La2O3，Gd2O3，Y2O3和Yb2O3，La2O3含量为15〜55％，Gd2O3含量与La2O3，Gd2O3，Y2O3，Yb2O3，Gd2O3 / La2O3 + Gd2O3 + Y2O3 + Yb2O3的总含量的质量比， 为0.17〜0.65,0〜13％的Ta2O5（不包括13％），0〜25％的Nb2O5，TiO2，WO3和ZrO2的总和，Nb2O5的含量小于10％，折射率 nd为1.83〜1.92，阿贝数为36〜45。
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