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    • 5. 发明授权
    • Progressive lens
    • 渐进镜头
    • US06652096B1
    • 2003-11-25
    • US09980091
    • 2002-02-28
    • Michael Alan MorrisSaulius Raymond VarnasAnthony Dennis Miller
    • Michael Alan MorrisSaulius Raymond VarnasAnthony Dennis Miller
    • G02C706
    • G02C7/063G02C7/06G02C7/061
    • A series of progressive opthalmatic lens elements, each lens element including a lens surface having an upper viewing zone having a surface power to achieve a refracting power corresponding to distance vision; a lower viewing zone having a greater surface power than the upper viewing zone to achieve a refracting power corresponding to near vision; a corridor of relatively low surface astigmatism connecting the upper and lower zones, said corridor having a surface power varying from that of the upper viewing zone to that of the lower viewing zone; the progressive opthalmatic lens series including a first set of lens elements having a base curve(s) suitable for use in providing a range of distance prescriptions for a first category of patient; and a second set of lens elements having a base curve(s) suitable for use in providing a range of distance prescriptions for a second category of patient; each lens element within a set differing in prescribed addition power and including a progressive design, in at least one of the upper and lower viewing zones, depending upon the addition power of the lens element; the lens elements in the first set differing substantively in progressive design from the corresponding lens elements in the second set due to the differences in base curve(s).
    • 一系列渐进式眼用透镜元件,每个透镜元件包括透镜表面,所述透镜表面具有具有表面光焦度的上观察区域,以实现对应于距离视觉的折射力; 下视区具有比上观察区更大的表面力,以实现对应于近视的折射力; 连接上部和下部区域的相对较低的表面散光走廊,所述走廊具有从上部观察区域到下部观察区域的表面功率变化的表面光焦度; 所述渐进式透镜系列包括第一组透镜元件,所述第一组透镜元件具有适用于为第一类患者提供一定范围的距离处方的基本曲线; 以及第二组透镜元件,其具有适合用于为第二类患者提供一定范围的距离处方的基本曲线; 根据透镜元件的附加功率,在一组中不同于规定的附加力并且包括渐进式设计的每个透镜元件在至少一个上视区和下观察区中; 由于基础曲线的差异,第一组中的透镜元件在逐渐设计中与第二组中的对应透镜元件实质上不同。