发明授权
US07513654B2 Lighting device for vehicle 失效
车辆照明装置

Lighting device for vehicle
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
信息查询
0/0