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公开(公告)号：US5507979A
公开(公告)日：1996-04-16
申请号：US283654
申请日：1994-08-01
CPC分类号： G02C7/042 , G02C7/045 , G02C7/06 , Y10S425/808
摘要： A method of making multifocal refractive contact lens to focus light on the retina of the eye uses a plurality of at least two of each alternating segments having different optical powers for distance vision and for near. The lens of the invention does not require orientation to produce adequate far and near vision and normal steroscoptic effect. One or both of the segments having the optical powers may have aspherical lens surface. Preferably, the lens has at least one aspherical lens surface and the segments are divided by an arcuate path going from the center of the lens to edge. Such a lens is manufactured by taking lens molds and cutting the molds from the edge through the center to the opposite edge along a predetermined path. The molds are cut so that the segments produced are interchangable and can be fitted together to make a mold that can produce the multifocal refractive contact lens by molding.
摘要翻译： 制造多焦点折射隐形眼镜以将眼睛聚焦在眼睛的视网膜上的方法使用具有不同光焦度的每个交替片段中的至少两个至少两个用于远视和附近的方法。 本发明的镜片不需要取向以产生足够的远视力和近视力以及正常的静电效应。 具有光焦度的部分中的一个或两个可以具有非球面透镜表面。 优选地，透镜具有至少一个非球面透镜表面，并且该段被从透镜的中心到边缘的弧形路径分开。 这样的透镜是通过拍摄镜头模具并沿着预定路径从中心到相对边缘的边缘切割模具来制造的。 切割模具使得所生成的片段是可互换的并且可以装配在一起以制造可以通过模制产生多焦点折射隐形眼镜的模具。
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公开(公告)号：US5198844A
公开(公告)日：1993-03-30
申请号：US728903
申请日：1991-07-10
CPC分类号： G02C7/042 , G02C7/045 , G02C7/06 , Y10S425/808
摘要： A multifocal refractive lens to focus light on the retina of the eye and method of making. The lens is comprised of a plurality of segments, alternating segments having different optical powers. At least for distance vision and another for near. The lens of the invention does not require orientation to produce adequate far and near vision and normal steroscoptic effect. One or both of the segments having the optical powers may have aspherical lens surface. Preferably, the lens has at least one aspherical lens surface and the segments are divided by an arcuate path going from the center of the lens to edge. Such a lens is manufactured by taking lens molds and cutting the molds from the edge through the center to the opposite edge along a predetermined path. The molds are cut so that the segments produced are interchangable and can be fitted together to make a mold that can produce the multifocal refractive contact lens by molding.
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