Invention Application
US20120113387A1 Progressive Power Lens and Progressive Power Lens Design Method
失效
渐进功率透镜和逐行功率透镜设计方法
- Patent Title: Progressive Power Lens and Progressive Power Lens Design Method
- Patent Title (中): 渐进功率透镜和逐行功率透镜设计方法
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Application No.: US13290936Application Date: 2011-11-07
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Publication No.: US20120113387A1Publication Date: 2012-05-10
- Inventor: Takateru MORI , Kazutoshi KATO , Ayumu ITO
- Applicant: Takateru MORI , Kazutoshi KATO , Ayumu ITO
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: JP2010-249450 20101108
- Main IPC: G02C7/06
- IPC: G02C7/06

Abstract:
A progressive power lens including a distance portion for visual recognition of a far working distance, a near portion for visual recognition of a near working distance, and an intermediate portion provided between the distance portion and the near portion, the intermediate portion including a position of an amount of intermediate inset in which a visual line when the intermediate working distance is visually recognized passes an eyeball side surface of the progressive power lens, and addition at intermediate position for viewing an intermediate working distance smaller than the far working distance and larger than the near working distance being set to the position of the amount of intermediate inset.
Public/Granted literature
- US08550622B2 Progressive power lens and progressive power lens design method Public/Granted day:2013-10-08
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