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    • 6. 发明公开
    • LENTILLE OPHTALMIQUE MULTIFOCALE PROGRESSIVE
    • LENTILLE OPHTALMIQUE MULOCOCALE渐进式
    • EP2534529A1
    • 2012-12-19
    • EP11707706.5
    • 2011-02-08
    • Essilor International (Compagnie Générale d'Optique)
    • BERTHEZENE, Marie-AnneBOURDONCLE, BernardCALIXTE, LaurentGUILLOUX, CyrilMOUSSET, SoazicPAILLE, Damien
    • G02C7/02
    • G02C7/06G02C7/061G02C7/063
    • The invention relates to a lens having certain properties, including: a circle grouping together all the points of the lens having the same abscissa and the same ordinate as points located on a circle in the reference plane, having a diameter of 35 millimetres and centred on a point located 8.5 millimetres below the mounting cross and horizontally offset on the nasal side by 1.25 millimetres; a disc grouping together all the points of the lens having the same abscissa and the same ordinate as points located inside said circle; a progression length of less than 14.5 millimetres; a ratio difference between the value of the cylinder and the surface addition of less than 0.2 as an absolute value for every pair of points of the lens that are symmetrical relative to the mounting cross and have the same ordinate as the mounting cross, and an abscissa with an absolute value of less than 20 millimetres; a first ratio between: the maximum cylinder value for all the points of the circle; and the surface addition of less than 0.7; and a second ratio between: the maximum cylinder value for all the points of the disc; and the surface addition of no more than 1.05. The invention is suitable for improving the comfort of the wearer.
    • 本发明涉及具有某些特性的透镜,包括:将具有相同横坐标和相同纵坐标的透镜的所有点集中在一起,该坐标与位于参考平面中的圆上的点相同,其直径为35毫米并且居中 一个点位于安装十字交叉点下方8.5毫米处,并在鼻侧水平偏移1.25毫米; 一个光盘将具有与位于所述圆内的点相同的横坐标和相同纵坐标的所有透镜点聚集在一起; 小于14.5毫米的进程长度; 对于相对于安装十字对称并且具有与安装十字相同的纵坐标的透镜的每对点,圆柱体的值和表面相加之间的比值差小于0.2作为绝对值,并且横坐标 绝对值小于20毫米; 第一比例:圆的所有点的最大柱面值; 并且表面添加小于0.7; 以及第二比例:盘的所有点的最大柱面值; 并且表面加入量不超过1.05。 本发明适用于改善佩戴者的舒适度。