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1. 发明授权

US06224467B1 Method of producing ocular lens and holders for holding lens blank during cutting thereof 失效
标题翻译：制造眼镜片的方法和在切割期间保持镜片毛坯的保持器
公开(公告)号：US06224467B1
公开(公告)日：2001-05-01
申请号：US09121573
申请日：1998-07-23
申请人： Yuki Tanaka , Yasuyoshi Yamamoto , Masahiro Sasaki , Toshikazu Miura , Seiichi Ichikawa , Hiroyuki Tajima
发明人： Yuki Tanaka , Yasuyoshi Yamamoto , Masahiro Sasaki , Toshikazu Miura , Seiichi Ichikawa , Hiroyuki Tajima
IPC分类号： B24B100
CPC分类号： B24B13/005
摘要： A method of producing an ocular lens, comprising the steps of: (a) preparing a lens blank which gives an ocular lens, the lens blank having a concave back surface and a convex front surface, at least a portion of the front surface being tapered to give a tapered surface; (b) forming a back curved surface of the ocular lens by effecting a cutting operation on the concave back surface of the lens blank, while the lens blank is supported on a spindle of a back surface cutting device such that the tapered surface of the lens blank is drawn onto a tapered holding surface of the spindle under a negative pressure applied to the lens blank, the tapered holding surface following a profile of the tapered surface of the lens blank; and (c) forming a front curved surface of the ocular lens by effecting a cutting operation on the front surface of the lens blank whose back surface has been cut to form the back curved surface, while the lens blank is supported on a spindle of a front surface cutting device such that the back curved surface of the lens blank is drawn onto a holding surface of the spindle of the front surface cutting device under a negative pressure applied to the lens blank.
摘要翻译：一种制造眼透镜的方法，包括以下步骤：（a）制备提供眼透镜的透镜毛坯，所述透镜毛坯具有凹后表面和凸前表面，所述前表面的至少一部分是锥形的给出锥形表面; （b）通过在透镜毛坯的凹面后面进行切割操作来形成眼镜片的后曲面，同时将镜片毛坯支撑在背面切割装置的主轴上，使得透镜的锥形表面空白在施加到透镜毛坯的负压下拉到主轴的锥形保持表面上，锥形保持表面遵循透镜毛坯的锥形表面的轮廓; 以及（c）通过对其后表面已经被切割以形成后曲面的透镜毛坯的前表面进行切割操作来形成眼镜片的前曲面，而镜片毛坯被支撑在前表面切割装置，使得透镜毛坯的后曲面在施加到透镜毛坯的负压下被拉到前表面切割装置的主轴的保持表面上。

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