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
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Application No.: US12672116Application Date: 2008-07-28
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Publication No.: US08690396B2Publication Date: 2014-04-08
- Inventor: Yasushi Yatsuda , Ryotaro Owada
- Applicant: Yasushi Yatsuda , Ryotaro 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

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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