发明公开
EP2140303A2 MULTIFOCAL LENS HAVING A PROGRESSIVE OPTICAL POWER REGION AND A DISCONTINUITY
审中-公开
以光学与GLEITSICHTBEREICH DISCONTINUITY多焦点镜片
- 专利标题: MULTIFOCAL LENS HAVING A PROGRESSIVE OPTICAL POWER REGION AND A DISCONTINUITY
- 专利标题(中): 以光学与GLEITSICHTBEREICH DISCONTINUITY多焦点镜片
-
申请号: EP08744801.5申请日: 2008-03-31
-
公开(公告)号: EP2140303A2公开(公告)日: 2010-01-06
- 发明人: BLUM, Ronald, D. , KOKONASKI, William , IYER, Venkatramani, S. , HADDOCK, Joshua, N. , SHUPNICK, Mark-Mattison
- 申请人: Pixeloptics Inc.
- 申请人地址: 5241 Valleypark Drive Roanoke, VA 24019 US
- 专利权人: Pixeloptics Inc.
- 当前专利权人: Pixeloptics Inc.
- 当前专利权人地址: 5241 Valleypark Drive Roanoke, VA 24019 US
- 代理机构: Hayden, Nicholas Mark
- 优先权: US907367P 20070329; US924975P 20070607; US935226P 20070801; US935492P 20070816; US935573P 20070820; US956813P 20070820; US970024P 20070905
- 国际公布: WO2008121975 20081009
- 主分类号: G02C7/02
- IPC分类号: G02C7/02
摘要:
Embodiments of the present invention relate to a multifocal lens having a diffractive optical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens.
信息查询