发明名称 |
Method of spin casting an ophthalmic device with a central aperture |
摘要 |
A method of making a spin cast contact device having a circular aperture in the center. The central aperture has a thin tapered inner edge. A spin cast concave mold having a raised central area provides the aperture with thin tapered edges. The device is a non-optical plano in the center and provides color enhancement to the eye.
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申请公布号 |
US4659522(A) |
申请公布日期 |
1987.04.21 |
申请号 |
US19860891122 |
申请日期 |
1986.07.31 |
申请人 |
NEEFE, CHARLES W. |
发明人 |
NEEFE, CHARLES W. |
分类号 |
B29C41/04;B29D11/00;G02C7/04;(IPC1-7):B29D11/00 |
主分类号 |
B29C41/04 |
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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