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US06912093B2 Optical glass, press-molding glass gob and optical element 有权
光学玻璃，压模玻璃料滴和光学元件

Optical glass, press-molding glass gob and optical element
摘要：
An optical glass whose refractive index is high and whose coloring is decreased comprising, by weight %, 2 to 45% of B2O3, 0 to 30% of SiO2 provided that the content of B2O3>the content of SiO2, 10 to 50% of La2O3, 0 to 30% of TiO2, 0 to 15% of ZnO, 0 to 15% of ZrO2, 0 to 35% of Nb2O5, 0 to 35% of BaO, 0 to 5% of SrO, 0% or more but less than 8% of CaO, 0% or more but less than 13% of MgO, provided that the total content of BaO, SrO, CaO and MgO is 0 to 40%, 0 to 20% of Gd2O3, 0 to 15% of Y2O3, 0 to 18% of Ta2O5, 0% or more but less than 0.5% of WO3, 0% or more but less than 1.5% of a total of Na2O, K2O and Li2O, 0 to 10% of GeO2, 0 to 20% of Bi2O3, 0 to 10% of Yb2O3, 0 to 10% of Al2O3, 0% or more but less than 2% of Sb2O3 and 0 to 1% of SnO2.
摘要（中）：

一种折射率高且着色性降低的光学玻璃，其包含按重量％计的B 2 O 3 3的2％〜45％，SiO 2的0〜30％ SUB> 2 ，只要B 2 O 3的含量 5％，0％以上但小于0.5％的WO 3，0％以上但小于1.5％的Na 2 N 2， O 2，K 2 O和Li 2 O，0〜10％的GeO 2，0〜20％的Bi 2， 0〜10％的Yb 2 O 3，0〜10％的Al 2 O 3，以及0〜10％的Al 2 O 3 > 0-3％，0％以上但小于2％的Sb 2 O 3 3和0〜1％的SnO 2 < / SUB>。

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