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    • 10. 发明专利
    • Composite contact lens and method for manufacturing lens material
    • 复合接触镜片及制造镜片材料的方法
    • JP2006184477A
    • 2006-07-13
    • JP2004377017
    • 2004-12-27
    • Hoya CorpHoya株式会社
    • SHOJI NORIYUKI
    • G02C7/04
    • G02C7/04B29C39/006B29C39/36B29D11/00048B29L2011/0041G02C7/049G02C2200/04
    • PROBLEM TO BE SOLVED: To increase the strength against tension or tear in the shear direction from a convex surface of a lens to a concave surface or the concave surface to the convex surface, occurring during the ordinary handling, and to improve wearing feel. SOLUTION: The composite contact lens has the central part consisting of a hard material and the surrounding part consisting of a hydrous soft material. The interfacial surface 3A between the central hard part 1 and the surrounding soft part 2 is formed of a single conical surface inclined so that the diameter D1 of the hard part 1 in the lens convex surface FC is larger than the diameter D2 of the hard part 1 in the lens concave surface BC, and the inclination angle α of the conical surface is set so that the angle θ formed by the interfacial surface 3A and the lens concave surface BC is approximately at 90 °. An annular convex part 7 projecting forward with respect to the curve of the convex surface of the optical part and forming a concentric circle with respect to the optical axis L of the lens is formed on the interfacial part 3 between the central hard part 1 and the surrounding soft part 2 at the side of the lens convex surface FC. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了增加在普通处理期间发生的从透镜的凸表面到凹面或凹面到凸面的剪切方向上的张力或撕裂强度,并且改善磨损 感觉。

      解决方案:复合隐形眼镜具有由硬质材料组成的中心部分和由含水软质材料组成的周围部分。 中心硬质部分1和周围的软部分2之间的界面表面3A由倾斜的单个锥形表面形成,使得透镜凸面FC中的硬质部分1的直径D1大于硬质部分的直径D2 1,并且锥面的倾斜角α被设定为使得由界面3A和透镜凹面BC形成的角度θ大致为90°。 相对于光学部件的凸表面的曲线向前突出并相对于透镜的光轴L形成同心圆的环形凸部7形成在中心硬质部分1和 围绕在透镜凸面FC侧的软部件2。 版权所有(C)2006,JPO&NCIPI