发明授权
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
- 专利标题: Projection lens for lighting equipment and lighting equipment using projection lens for lighting equipment
- 专利标题(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
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申请号: US12672116申请日: 2008-07-28
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公开(公告)号: US08690396B2公开(公告)日: 2014-04-08
- 发明人: Yasushi Yatsuda , Ryotaro Owada
- 申请人: Yasushi Yatsuda , Ryotaro Owada
- 申请人地址: JP Tokyo
- 专利权人: Stanley Electric Co., Ltd.
- 当前专利权人: Stanley Electric Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Kenealy Vaidya LLP
- 优先权: JP2007-206847 20070808
- 国际申请: PCT/JP2008/063505 WO 20080728
- 国际公布: WO2009/020000 WO 20090212
- 主分类号: F21V3/00
- IPC分类号: F21V3/00
摘要:
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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