发明授权
- 专利标题: Photochromic glasses
- 专利标题(中): 光致变色眼镜
-
申请号: US355519申请日: 1999-07-29
-
公开(公告)号: US6162749A公开(公告)日: 2000-12-19
- 发明人: Yves Andre Henri Brocheton , Michel Prassas
- 申请人: Yves Andre Henri Brocheton , Michel Prassas
- 申请人地址: FRX Avon Cedex
- 专利权人: Corning S.A.
- 当前专利权人: Corning S.A.
- 当前专利权人地址: FRX Avon Cedex
- 优先权: FRX9701164 19970207
- 主分类号: C03C3/091
- IPC分类号: C03C3/091 ; C03C3/093 ; C03C3/095 ; C03C3/11 ; C03C4/06 ; C03C4/02
摘要:
The invention concerns photochromic glasses with improved properties having the following composition, in wt. %: SiO.sub.2 : 51-66, B.sub.2 O.sub.3 : 15-23, Al.sub.2 O.sub.3 : 3-10, ZrO.sub.2 : 2.5-11, TiO.sub.2 : 0-1, Li.sub.2 O: 3-7, Na.sub.2 O: 0-8, K.sub.2 O: 2-9, Ag: 0.080-0.30, CuO>0.0020-0.0130, Cl: 0.1-0.6, Br 0.040-0.3, MgO: 0-3, CaO: 0-3, SrO: 0-3, BaO: 0-3, Nb.sub.2 O.sub.5 : 0-1, La.sub.2 O.sub.3 : 0-8, Y.sub.2 O.sub.3 : 0-8, with 0.2 0.15, 0.5.ltoreq.La.sub.2 O.sub.3 +Y.sub.2 O.sub.3.ltoreq.8, TiO.sub.2 +Nb.sub.2 O.sub.5 .ltoreq.1.2, 10.ltoreq.Al.sub.2 O.sub.3 +ZrO.sub.2 .ltoreq.17, MgO+CaO+SrO+BaO.ltoreq.6. Use for the production of ophthalmic lenses.
公开/授权文献
- US4941722A Light beam deflector 公开/授权日:1990-07-17
信息查询