发明名称 |
Multifocal contact lens and method and apparatus for making the same |
摘要 |
A monocentric, multivision contact lens having a single optical axis and an anterior side. A first spherical vision surface is disposed on a first portion of the anterior side and has a first radius of curvature and a first center of curvature disposed along the single optical axis. A second spherical vision surface is disposed on a second portion of the anterior side and has a second radius of curvature and a second center of curvature disposed along the single optical axis. A transition surface is disposed intermediate the first portion and the second portion and has a plurality of centers of curvature disposed along the single optical axis. A method of making a monocentric contact lens and a mandrel for mounting a lens on a lathe for producing a monocentric contact lens are disclosed. |
申请公布号 |
US5740707(A) |
申请公布日期 |
1998.04.21 |
申请号 |
US19960734716 |
申请日期 |
1996.10.21 |
申请人 |
TRU-FORM OPTICS, INC. |
发明人 |
SVOCHAK, JAN B.;WESS, COLIN HOWARD |
分类号 |
G02C7/06;B24B13/00;B24B13/04;B29D11/00;G02C7/04;(IPC1-7):B23B3/00 |
主分类号 |
G02C7/06 |
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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