| 发明名称 |
Progressive addition lenses with reduced unwanted astigmatism |
| 摘要 |
The invention provides lenses in which the maximum unwanted astigmatism is reduced and distributed over a wide area.
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| 申请公布号 |
US7364294(B2) |
申请公布日期 |
2008.04.29 |
| 申请号 |
US20060520379 |
申请日期 |
2006.09.13 |
| 申请人 |
ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE |
发明人 |
MENEZES EDGAR V. |
| 分类号 |
G02C7/02;G02C7/06 |
主分类号 |
G02C7/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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