利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.006 秒)

    Multifocal diffractive ophthalmic lens using suppressed diffractive order
    1.
    发明公开
    Multifocal diffractive ophthalmic lens using suppressed diffractive order 有权
    Multifokale，diffraktive eyemische Linse mit einerunterdrücktenBeugungsordnung

    公开(公告)号：EP2945009A1

    公开(公告)日：2015-11-18

    申请号：EP15152911.2

    申请日：2015-01-28

    申请人： Novartis AG

    发明人： Liu, Yueai ,  Choi, Myoung-Taek ,  Hong, Xin

    IPC分类号： G02C7/04 ,  A61F2/16

    CPC分类号： A61F2/1654 ,  A61F2/1618 ,  A61F2230/0006 ,  G02B5/1876 ,  G02C7/042 ,  G02C7/06 ,  G02C2202/20

    摘要： A multifocal ophthalmic lens includes an ophthalmic lens (100) and a diffractive element (102). The ophthalmic lens has a base curvature corresponding to a base power. The diffractive element produces constructive interference in at least four consecutive diffractive orders corresponding a range of vision between near and distance vision. The constructive interference produces a near focus, a distance focus corresponding to the base power of the ophthalmic lens, and an intermediate focus between the near focus and the distance focus. A diffraction efficiency of at least one of the diffractive orders is suppressed to less than ten percent.

    摘要翻译： 多焦点眼科镜片包括眼科镜片（100）和衍射元件（102）。 眼科镜片具有与基本功率对应的基本曲率。 衍射元件在至少四个连续的衍射阶段产生对应于近视和远距离视觉范围之间的建构性干扰。 结构性干扰产生近焦点，对应于眼科镜片的基本功率的距离焦点以及近焦点和距离焦点之间的中间焦点。 至少一个衍射级的衍射效率被抑制到小于百分之十。