Invention Grant
US08690396B2 Projection lens for lighting equipment and lighting equipment using projection lens for lighting equipment 有权
投影镜头用于照明设备和照明设备使用投影镜头的照明设备

  • Patent Title: Projection lens for lighting equipment and lighting equipment using projection lens for lighting equipment
  • Patent Title (中): 投影镜头用于照明设备和照明设备使用投影镜头的照明设备
  • Application No.: US12672116
    Application Date: 2008-07-28
  • Publication No.: US08690396B2
    Publication Date: 2014-04-08
  • Inventor: Yasushi YatsudaRyotaro Owada
  • Applicant: Yasushi YatsudaRyotaro Owada
  • Applicant Address: JP Tokyo
  • Assignee: Stanley Electric Co., Ltd.
  • Current Assignee: Stanley Electric Co., Ltd.
  • Current Assignee Address: JP Tokyo
  • Agency: Kenealy Vaidya LLP
  • Priority: JP2007-206847 20070808
  • International Application: PCT/JP2008/063505 WO 20080728
  • International Announcement: WO2009/020000 WO 20090212
  • Main IPC: F21V3/00
  • IPC: F21V3/00
Projection lens for lighting equipment and lighting equipment using projection lens for lighting equipment
Abstract:
A projection lens for lighting equipment of an aspect of the present invention is characterized by formed in a shape where N of sector-shaped lens parts each of which corresponds to a central angle 2α degrees (α=180/N, N is an integer more than or equal to 3) and is bilaterally symmetric in a rotationally asymmetric elliptical collimator lens are circumferentially disposed. The projection lens for lighting equipment of such aspect is formed in the shape where N of the sector-shaped lens parts each of which corresponds to a central angle 2α degrees (α=180/N, N is an integer more than or equal to 3) and is bilaterally symmetric in the rotationally asymmetric elliptical collimator lens are circumferentially disposed. Accordingly, the projection lens for lighting equipment with a novel design which has a shape of a N-sided polygon (e.g. quadrilateral) in planar view or a shape similar to the N-sided polygon and has common edges (N edges) formed on a surface without impairment in function as a collimator lens can be configured.
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