发明名称 |
Method of making eyeglass lenses with add on segments |
摘要 |
In order to enable ophthalmic (eyeglass) lenses with add-on lens segments to be produced economically so as, for example, to provide a multi-focal addition to a base single lens and dispensed to a user, the add on segment is molded from a liquid photpolimer and partially cured to a state where it is elastomeric (a gel which holds its shape). The segment is then located upon a surface of the base lens which acts as a substrate where the base lens which acts as a substrate and conforms to the surface even if the surface has special corrective curvature as for astigmatism. The base lens may be a conventional plastic lens (acrylic or polycarbonate). No additional adhesive is required. When in place the curing of the segment is completed so that the multi-focal lens with the segment adhering to the base lens is produced.
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申请公布号 |
US5938876(A) |
申请公布日期 |
1999.08.17 |
申请号 |
US19980014143 |
申请日期 |
1998.01.27 |
申请人 |
MORRISON INTERNATIONAL, INC. |
发明人 |
EDWARDS, JOHN L.;MORRISON, ROBERT J. |
分类号 |
B29C35/00;B29C35/08;B29C43/18;B29C65/00;B29D11/00;(IPC1-7):B32B31/24;G02C7/02 |
主分类号 |
B29C35/00 |
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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