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1. 发明公开

EP0592236A1 Improvements in/or relating to ophthalmic lens manufacture 失效
标题翻译： Verbesserungen in / oderbezüglichder Herstellung von ophtalmischen Linsen。
公开(公告)号：EP0592236A1
公开(公告)日：1994-04-13
申请号：EP93308017.8
申请日：1993-10-08
申请人： SOLA INTERNATIONAL HOLDINGS, LTD.
发明人： Neal, George H. , Kelley, William C.
IPC分类号： C03B23/22 , G02C7/06
CPC分类号： C03B23/22 , G02C7/06 , Y10T428/21 , Y10T428/24479 , Y10T428/24521 , Y10T428/24942 , Y10T428/2495 , Y10T428/24967
摘要： A button for forming a segment of a multifocal lens, the button comprising a first portion (11) composed of a lead oxide-containing glass, a second portion (12) composed of a glass which contains substantially no lead oxide, the first and second portions being adjacent and forming a face of a button for machining to a desired shape, and a third portion (82) composed of a glass which contains substantially no lead oxide, the first and second glass portions being fused to the third glass portion on a side of the first and second portions remote from the said face of the button. The invention also provides a method of making a multifocal lens by (a) providing a button in accordance with the invention; (b) machining the said face of the button to the desired shape to match a recess in a lens blank; (c) disposing the button in the recess with the machined face adjacent to the face of the recess; (d) fusing the button in the recess; and (e) removing by grinding the third portion, and unwanted regions of the first and second portions so as to form a desired lens surface.
摘要翻译：一种用于形成多焦点透镜的区段的按钮，该按钮包括由含氧化铅玻璃构成的第一部分（11），由基本上不含氧化铅的玻璃构成的第二部分（12），第一和第二部分相邻并形成用于加工成所需形状的按钮的表面;以及第三部分（82），由基本上不含氧化铅的玻璃构成，第一和第二玻璃部分在第一玻璃部分第一和第二部分的远离按钮的所述面的一侧。本发明还提供了通过（a）提供根据本发明的按钮来制造多焦点透镜的方法; （b）将所述按钮的所述面加工成所需的形状以匹配透镜毛坯中的凹部; （c）将所述按钮设置在所述凹部中，所述加工面与所述凹部的表面相邻; （d）将按钮固定在凹槽中; 和（e）通过研磨第三部分和第一和第二部分的不需要的区域以去除以形成所需的透镜表面。

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