单模组LED光源的一体式汽车前照灯设计

随着LED光源技术及应用的发展,其在汽车照明市场中所占的份额也逐年增大。目前,市场上大多采用多个模组LED光源及其分别的结构设计汽车近光灯和远光灯,再由这些汽车LED近光灯和远光灯组合成不同车型的汽车LED前照灯,这种方法设计的汽车前照灯体积大、功耗大、成本高、适用车型少。提出了一种以单模组LED光源的一体式汽车前照灯系统的光学设计方法,使用一个LED光源模组和一组反射器的组合来满足远光和近光的照明的要求,仅仅通过光阑板的切换来达到近光和远光照明的目的,重点通过光学仿真软件模拟仿真的方式,通过对比研究不同光学结构设计方式来确定最后的设计方案。最终给出了一个效率较高、体积较小、应用范围广泛、照明效果好、适用于多种车型的一体式汽车前照灯的设计方法。

Design of single module LED-based integrated headlamp system

With the rapid development of LED industry, its share in the automotive lighting market is also growing very fast year by year. At present, there are mainly two design methods of LED-based headlamp which are single-moduled and multi-moduled, what's more, most of the headlamp system are composed of several modules which can just be used by specific cars. This kind of headlamp system has large volume, high power consumption, high cost and narrow application range. The main research of the article was the optical design method of the single-moduled LED headlamp with small volume and outstanding lighting effect. A brand-new design method of LED-based integrated headlamp optical system was proposed, which used only one group of reflectors and one LED module to meet the lighting needs of high beam and low beam using a baffle. The final design method was determined through software simulation and contrast of different design methods to pick up a best one. Finally, it puts forward a new design method of LED-based integrated headlamp system with high efficiency, small volume and excellent lighting effect which can be used by different kinds of cars.