激光车灯对比于LED车灯，具有能耗小、体积小、亮度高等优点，是汽车车灯发展的新方向。提出了一种激光车灯的完整的设计思路。光源采用激光二极管激发荧光片得到白光。通过搭建光学检测平台研究激光驱动白光光源的光学特性，通过机器视觉的方法研究荧光片前后光斑的形状和尺寸的变化，从而精确地建立光源的仿真模型，为后续的光学设计提供理论依据。通过非成像光学设计方法，设计了Fresnel透镜实现了对激光的整形，并利用超精密车削实现透镜的加工。完成了车灯的设计和组装，并通过光学仿真和光学实验验证了设计的正确性。

Compared with LED lamp, laser lamp has the advantages of small energy consumption, small volume and high brightness. It will become a new trend of vehicle lamp. A design method of laser lamp is proposed. The light source is laser diode, which is converted into white light by phosphors film. The optical test platform is built to study the optical characteristics of the source, and the machine vision method is used to study the change of the shape and size of the light spot before and after the phosphors, which provides a theoretical basis for subsequent optical design. Fresnel lens is designed by non-imaging optical design method to achieve laser convergence and shaping. The Fresnel lens is machined using ultra-precision turning. The laser lamp prototype is assembled and tested, and the feasibility of the design method is verified by optical simulation and optical experiment.