Invention Grant
US08619362B2 Multifocal diffractive ophthalmic lens with multifocal base surface
有权
具有多焦点基面的多焦点衍射眼镜片
- Patent Title: Multifocal diffractive ophthalmic lens with multifocal base surface
- Patent Title (中): 具有多焦点基面的多焦点衍射眼镜片
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Application No.: US12625364Application Date: 2009-11-24
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Publication No.: US08619362B2Publication Date: 2013-12-31
- Inventor: Valdemar Portney
- Applicant: Valdemar Portney
- Agency: Hackler Daghighian & Martino
- Main IPC: G02B5/18
- IPC: G02B5/18
Abstract:
A multifocal ophthalmic lens includes a lens element having an anterior surface and a posterior surface, a refractive zone, or base surface having produced multifocal powers disposed on one of the anterior and posterior surfaces; and a near focus diffractive multifocal zone disposed on one of the anterior and posterior surfaces.
Public/Granted literature
- US20100066973A1 MULTIFOCAL DIFFRACTIVE OPHTHALMIC LENS WITH MULTIFOCAL BASE SURFACE Public/Granted day:2010-03-18
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