公开(公告)号：US20160331522A1

公开(公告)日：2016-11-17

申请号：US15111158

申请日：2015-01-16

Applicant: KOWA COMPANY, LTD.

Inventor： Kimiya Shimizu ,  Haruo Ishikawa

IPC: A61F2/16 ,  G02C7/02

CPC classification number: A61F2/1645 ,  G02C7/02 ,  G02C7/022 ,  G02C7/04 ,  G02C2202/06

Abstract: A tonic ophthalmic lens is described in which refractivity of the lens differs between a first direction on a plane perpendicular to an optical axis of the lens and a second direction which differs from the first direction on the plane. In addition, refractivity difference which is the difference between the refractivity in the first direction and the refractivity in the second direction varies depending on a position of the lens in a radial direction.

Abstract translation: 描述了一种矫正眼科镜片，其中透镜的折射率在垂直于透镜的光轴的平面上的第一方向与不同于平面上的第一方向的第二方向不同。 此外，作为第一方向的折射率与第二方向的折射率的差的折射率差根据透镜在径向的位置而变化。

公开(公告)号：US10646328B2

公开(公告)日：2020-05-12

申请号：US15111158

申请日：2015-01-16

Applicant: KOWA COMPANY, LTD.

Inventor： Kimiya Shimizu ,  Haruo Ishikawa

IPC: A61F2/16 ,  G02C7/04 ,  G02C7/02

Abstract: A tonic ophthalmic lens is described in which refractivity of the lens differs between a first direction on a plane perpendicular to an optical axis of the lens and a second direction which differs from the first direction on the plane. In addition, refractivity difference which is the difference between the refractivity in the first direction and the refractivity in the second direction varies depending on a position of the lens in a radial direction.