实现LED道路照明矩形光斑的方法

Methods of Realizing the Road Lighting Rectangular Spot

首先介绍了城市道路照明标准及配光要求。然后给出LED路灯实现城市道路照明所需矩形光斑的常见设计方法和原理,包括单颗LED实现矩形光斑的反射式、透射式全反射透镜、自由曲面透镜和复眼光学系统,以及LED阵列实现矩形光斑的平面式排列、多折面排列和弧形排列光学系统的结构和工作原理。最后讨论了目前这一领域研究的发展趋势,包括直接一次光学透镜技术、集成封装技术和光源化模组技术。

Firstly the light distribution standards and requirements of urban road lighting are introduced.And then the common design methods and principles achieving road lighting rectangular spots for LED street lamps,including single light source reflective optical system,refractive optical system of total internal reflection and freeform surface lens optical system,compound eye optical system and LED array planar arrangement optical system,multi fold arrangement optical system and radial arrangement optical system are given.Finally,a research expectation in this field,including direct optical lens technology,integrated packaging technology and illuminant module technology is discussed.