前照灯反射镜 meaning in Chinese

head lamlens
reflector，headlamp

Firstly , the calculation methods of lighting optics , such as ray tracing method , monte carlo method and flux transmission method , are discussed , further more the characteristic and the application field are anatomized and compared , consequently the flux transmission method is selected as the main method of computational simulation software of photometric characteristic of headlamps for vehicle
本文首先对常用的光线追踪算法、蒙特卡罗方法和光通转移法等照明光学的计算方法进行了讨论，分析比较了各种计算方法的特点和适用范围，选择了光通转移法作为汽车前照灯反射镜配光性能的仿真计算的主要算法。