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US08128222B2 Multifocal diffractive contact lens with bi-sign surface shape 失效
具有双符号表面形状的多焦点衍射隐形眼镜

  • Patent Title: Multifocal diffractive contact lens with bi-sign surface shape
  • Patent Title (中): 具有双符号表面形状的多焦点衍射隐形眼镜
  • Application No.: US12510172
    Application Date: 2009-07-27
  • Publication No.: US08128222B2
    Publication Date: 2012-03-06
  • Inventor: Valdemar Portney
  • Applicant: Valdemar Portney
  • Agent Walter A. Hackler
  • Main IPC: G02C7/04
  • IPC: G02C7/04
Multifocal diffractive contact lens with bi-sign surface shape
Abstract:
A contact lens for placing over the eye is described. The lens has at least one non-spherical shape surface configured with bi-sign profile to maintain lens optical advantage as compared with equivalent far power spherical lens within common clinical condition of lens movement over the cornea of the eye.
Abstract(Chinese):

描述了用于放置在眼睛上的隐形眼镜。 透镜具有配置有双符号轮廓的至少一个非球形形状表面，以在透镜在眼睛的角膜上移动的常见临床条件下与等效远光球面透镜相比保持透镜光学优点。

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