LED路灯光强模拟分布及实验验证

为了使发光二极管(LED)照明灯具发出的光线在路表面的光照度分布更合理,能够更有效地使用有限光能量,现主要针对采用LED的道路照明灯具,用专业的光学系统仿真模拟软件Lighttools进行路面照度分布的模拟,并根据结果进行优化设计,从而设计出合理的外光学系统,并提出一种新型的透射散射元件。根据设计和模拟内容,初步加工成形一个散射元件,并进行了验证实验。结果表明该元件在改善LED道路照明灯具的光强分布性能方面有一定的功效。

Research on an optical system for the LED energy-saving road lighting

In order to rationalize the illuminance distribution on the road and to make a good use of the luminous energy of the light emitting diode(LED) lighting system,in this paper the professional optical software-lighttools is used to simulate the illuminance distribution,and based on its results the parameters of the different optical systems are optimized.Thus an outer optical system is designed and a new scatter element is introduced for the LED road lighting.In accordance with the design and simulation,a scattering element is preliminary produced and a series of experiments are carried out to verify the simulation results.The results of the experiment show that the element designed can improve the photometric characteristics of the LED road lighting to some extent.