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1车辆用前照灯公开(公告)号:CN101761848A摘要:本发明的课题是实现小型化、轻量化、成本降低化和光学元件的组装精度的提高。本发明的车辆用前照灯具备半导体型光源和透镜。透镜的出射面由进行了曲面控制的自由曲面构成,以防从出射面出射的半导体型光源的发光芯片的投影像从近光束用配光图案(LP)的屏幕图案上的遮断线向上方突出。
1 Headlamp for Vehicle (Publication) No. (CN): CN101761848A Abstract The present invention aims to achieve miniaturization, weight reduction, cost reduction, and improvement of assembly accuracy of optical elements. The vehicle headlamp of the present invention includes a semiconductor-type light source and a lens. The exit surface of the lens is formed of a curved surface controlled free curved surface so that the projection image of the light emitting chip of the semiconductor light source which exits the exit surface does not protrude upward from the cutoff line on the screen pattern of the low beam light distribution pattern (LP) .