发明名称 |
Progressive multifocal contact lens suitable for compensating presbyopia |
摘要 |
The progression of the optical power of the lens comprises a first tract (a) that descends rapidly to the base dioptric power and in which the lens functions for near vision; a short second tract (b) that remains substantially at the level of the base dioptric power and in which the lens functions for far vision; and a third tract (c) consisting of a first progressively rising part (c') and a constant second part (c'') and in which the lens functions progressively for intermediate distance in the first part and in a constant manner for near vision in the second part.
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申请公布号 |
US6322213(B1) |
申请公布日期 |
2001.11.27 |
申请号 |
US20000601657 |
申请日期 |
2000.08.04 |
申请人 |
EURO LENS TECHNOLOGY S.P.A. |
发明人 |
ALTIERI ANDREA;FILIPPO ALESSANDRO |
分类号 |
G02C7/00;G02C7/04;G02C7/06;(IPC1-7):G02C7/04 |
主分类号 |
G02C7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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