发明申请
- 专利标题: OPTICAL GLASS
- 专利标题(中): 光学玻璃
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申请号: US12865574申请日: 2009-01-22
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公开(公告)号: US20110028300A1公开(公告)日: 2011-02-03
- 发明人: Xuelu Zou , Yunoshin Kanayama , Tomoaki Negishi
- 申请人: Xuelu Zou , Yunoshin Kanayama , Tomoaki Negishi
- 优先权: JP2008-019422 20080130
- 国际申请: PCT/JP2009/051402 WO 20090122
- 主分类号: C03C3/068
- IPC分类号: C03C3/068 ; C03B11/00 ; C03C19/00
摘要:
An optical glass comprising, by mol %, 0.1 to 40% of SiO2, 10 to 50% of B2O3, 0 to 10% of total of Li2O, Na2O and K2O, 0 to 10% of total of MgO, CaO, SrO and BaO, 0.5 to 22% of ZnO, 5 to 50% of La2O3, 0.1 to 25% of Gd2O3, 0.1 to 20% of Y2O3, 0 to 20% of Yb2O3, 0 to 25% of ZrO2, 0 to 25% of TiO2, 0 to 20% of Nb2O5, 0 to 10% of Ta2O5, over 0.1% but not more than 20% of WO3, 0 to less than 3% of GeO2, 0 to 10% of Bi2O3, and 0 to 10% of Al2O3, the mass ratio of the content of SiO2 to the content of B2O3, SiO2/B2O3, being 1 or less, the optical glass having a refractive index nd of 1.86 to 1.95 and an Abbe's number νd of (2.36−nd)/0.014 or more but less than 38.
公开/授权文献
- US08424344B2 Optical glass 公开/授权日:2013-04-23