发明名称 |
Method and apparatus for edge contouring lenses |
摘要 |
This invention relates to a method and apparatus for edge contouring and severing a lens such as a contact lens of an elastomeric material such as a silicone elastomer from a workpiece containing the lens. The method most preferably employs two beam focussing means such as laser optics systems situated opposite each other which project a ring-shaped beam of, e.g., 10.6 micron wavelength radiation from a carbon dioxide laser at a workpiece centered between the two beam focussing means. Such a laser beam is preferably directed at both surfaces of a workpiece to fully edge contour and sever a contact lens from the workpiece in a fast and efficient manner.
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申请公布号 |
US4642439(A) |
申请公布日期 |
1987.02.10 |
申请号 |
US19850688491 |
申请日期 |
1985.01.03 |
申请人 |
DOW CORNING CORPORATION |
发明人 |
MILLER, RICHARD T.;SUKHMAN, YEFIM P.;WELKER, LYNN C. |
分类号 |
G02C7/04;B23K26/00;B23K26/06;B23K26/067;B23K26/073;B24B9/14;B29D11/00;(IPC1-7):B23K26/00 |
主分类号 |
G02C7/04 |
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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