发明申请
US20120302424A1 OPTICAL GLASS, GLASS MOLDED BODY, OPTICAL DEVICE AND THEIR PRODUCTION METHODS
有权
光学玻璃，玻璃模体，光学装置及其生产方法
- 专利标题： OPTICAL GLASS, GLASS MOLDED BODY, OPTICAL DEVICE AND THEIR PRODUCTION METHODS
- 专利标题（中）： 光学玻璃，玻璃模体，光学装置及其生产方法
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申请号： US13571539申请日： 2012-08-10
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公开(公告)号： US20120302424A1公开(公告)日： 2012-11-29
- 发明人: Yuta KOBAYASHI , Yoichi Hachitani , Yunoshin Kanayama
- 申请人： Yuta KOBAYASHI , Yoichi Hachitani , Yunoshin Kanayama
- 申请人地址： JP Tokyo
- 专利权人： HOYA CORPORATION
- 当前专利权人： HOYA CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2006-171569 20060621
- 主分类号： C03C3/00
- IPC分类号： C03C3/00 ; C03C3/155 ; C03C3/062 ; C03B23/00 ; C03C3/068 ; C03C3/066 ; C03B17/00 ; C03C3/14 ; C03C3/064
摘要：
An optical glass comprising, by mass %, 12 to 30% of total of B2O3 and SiO2, 55 to 80% of total of La2O3, Gd2O3, Y2O3, Yb2O3, ZrO2, Nb2O5 and WO3, 2 to 10% of ZrO2, 0 to 15% of Nb2O5, 0 to 15% of ZnO and 0% or more but less than 13% of Ta2O5, wherein the ratio of the content of Ta2O5 to the total content of La2O3, Gd2O3, Y2O3, Yb2O3, ZrO2, Nb2O5 and WO3 is 0.23 or less, the ratio of the total content of La2O3, Gd2O3, Y2O3 and Yb2O3 to the total content of B2O3 and SiO2 is from 2 to 4, the optical glass having a refractive index nd of 1.86 or more and an Abbe's number νd of 38 or more, and a rod-shaped glass shaped material and an optical element formed of the above optical glass each.
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