汽车前照灯明暗截止线偏移问题探讨

Research on the Problem of Cut-off Line Movement of Automotive Headlamp

汽车前照灯近光明暗截止线的高低意味着近光在路面上照射距离的远近;其高度的稳定对于行车安全和驾驶体验都非常重要,也是灯具开发的难点。本文以上海大众新帕萨特氙灯为例,阐述截止线偏移问题常见的原因、分析方法和预防解决方案。

The height of the cut-off line of automotive headlamp means how far the road in front of the car can be illuminated, and its stability is very important for the safety and satisfaction of the driver, and this is also typically difficult point in the development of headlamp. In this article the commonly seen causes, analyzing methods and solutions are introduced, with Xenon headlamp of Shanghai Volkswagen＇s New Passat car as example.