| 发明名称 |
OPTICAL GLASS AND USE THEREOF |
| 摘要 |
An aspect of the present invention relates to optical glass, which is oxide glass, having a refractive index nd ranging from 1.95 to 2.50 and an Abbé number νd ranging from 18 to 40, including essential components in the form of Si4+, B3+, La3+, Ti4+, Nb5+, and at least one from among Gd3+, Y3+, and Yb3+, including, denoted as cation %, 1 to 30% of Si4+, 1 to 50% of B3+, wherein a total of Si4+ and B3+ ranges from 5 to 55%, a total of 11 to 70% of La3+, Gd3+, Y3+, and Yb3+, with 10 to 50% of La3+, a total of 23 to 70% of Ti4+, Nb5+, Ta5+, and W6+, with equal to or greater than 1% of Nb5+ and greater than 22% of Ti4+. |
| 申请公布号 |
US2015045204(A1) |
申请公布日期 |
2015.02.12 |
| 申请号 |
US201314381771 |
申请日期 |
2013.02.25 |
| 申请人 |
Negishi Tomoaki;Nishikawa Toshiyuki |
发明人 |
Negishi Tomoaki;Nishikawa Toshiyuki |
| 分类号 |
C03C3/068;C03B11/08 |
主分类号 |
C03C3/068 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. Optical glass, which is oxide glass, having a refractive index nd ranging from 1.95 to 2.50 and an Abbé number νd ranging from 18 to 40;
comprising essential components in the form of Si4+, B3+, La3+, Ti4+, Nb5+, and at least one from among Gd3+, Y3+, and Yb3+; comprising, denoted as cation %, 1 to 30% of Si4+; 1 to 50% of B3+, wherein a total of Si4+ and B3+ ranges from 5 to 55%; a total of 11 to 70% of La3+, Gd3+, Y3+, and Yb3+, with 10 to 50% of La3+; a total of 23 to 70% of Ti4+, Nb5+, Ta5+, and W6+, with equal to or greater than 1% of Nb5+ and greater than 22% of Ti4+; wherein a cation ratio of a content of Y3+ to a total content of Gd3+, Y3+, and Yb3+, Y3+/(Gd3++Y3++Yb3+), is equal to or less than 0.60; and wherein a cation ratio of a content of W6+ to a total content of Ti4+, Nb5+, Ta5+, and W6+, W6++/(Ti4++Nb5++Ta5++W6+), is less than 0.10. |
| 地址 |
Hino-shi JP |
