发明申请
- 专利标题: Progressive refractive power lens and production method therefor
- 专利标题(中): 渐进屈光力镜片及其制作方法
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申请号: US10509494申请日: 2004-03-30
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公开(公告)号: US20050146681A1公开(公告)日: 2005-07-07
- 发明人: Kazutoshi Kato
- 申请人: Kazutoshi Kato
- 优先权: JP2003-106600 20030410
- 国际申请: PCT/JP04/04557 WO 20040330
- 主分类号: G02C7/06
- IPC分类号: G02C7/06 ; G02C7/02
摘要:
A progressive power lens is conventionally so designed that a distance portion and a near portion are linked together in a successive manner, and thus framing cannot be done in a manner as to fully achieve the best optical properties of the near portion. The present invention provides, on the other hand, a progressive power lens that is designed to make the near portion closer to an eyeball without impairing the optical properties of the progressive power lens. Accordingly, both the distance portion and the near portion can be framed with the ideal fitting, and the resulting eyeglasses can be less in distortion and fluctuation.
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