发明授权
- 专利标题: Lighting device for vehicle
- 专利标题(中): 车辆照明装置
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申请号: US11433598申请日: 2006-05-12
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公开(公告)号: US07513654B2公开(公告)日: 2009-04-07
- 发明人: Noriko Okada
- 申请人: Noriko Okada
- 申请人地址: JP Tokyo
- 专利权人: Koito Manufacturing Co., Ltd.
- 当前专利权人: Koito Manufacturing Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Osha • Liang LLP
- 优先权: JP2005-143439 20050517
- 主分类号: F21V7/00
- IPC分类号: F21V7/00
摘要:
A lighting device for a vehicle has a light-emitting element disposed on an optical axis, a first reflection surface for reflecting light emitted from the light-emitting element in an outer radial direction of the optical axis, and a second reflection surface for reflecting the light reflected by the first reflection surface forward. A cross-sectional shape of the first reflection surface taken along a predetermined plane including the optical axis is an ellipse. The ellipse has a light-emitting center as a first focus and an axis line crossing the optical axis as a major axis. The second reflection surface is disposed between the first focus and a second focus of the ellipse. A cross-sectional shape of the second reflection surface taken along the predetermined plane is a parabola having the second focus of the ellipse as a focus and a point located forward of the focus as a vertex.
公开/授权文献
- US20060285347A1 Lighting device for vehicle 公开/授权日:2006-12-21
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