发明授权
- 专利标题: Multifocal ophthalmic lenses and processes for their production
- 专利标题(中): 多焦点眼科镜片及其生产工艺
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申请号: US09356950申请日: 1999-07-19
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公开(公告)号: US06511178B1公开(公告)日: 2003-01-28
- 发明人: Jeffrey H. Roffman , Denwood F. Ross , Michel Guillon
- 申请人: Jeffrey H. Roffman , Denwood F. Ross , Michel Guillon
- 主分类号: G02C704
- IPC分类号: G02C704
摘要:
The invention provides lenses that have zones of more than one optical power, or focal length, and a smooth transition between the zones of differing power.
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