基于Tracepro的LED光照均匀性二次光学设计

The Secondary Optical Design for Light Emitting Diodes Illumination Uniformity Based on Tracepro

朗伯型LED光源用于室内照明系统时,出光角度大,目标面上的照度分布不均匀,容易造成眩光。为了解决这个问题,设计了以COB封装的LED为定义光源,将复合抛物面反射器和菲涅尔透镜配合使用,通过Tracepro软件进行建模以及光线追迹仿真。仿真结果为:出光角度适中、有效光斑为1000mm、均匀度为85%。与朗伯型光源相比,均匀度提高了47.3%。

Lambert-type LED light source used in indoor lighting system may easily cause glare due to large angle of light,and unevenly distributed illuminance on the target surface.In order to solve this problem,the COB encapsulated LED is takes as the definition light source and the compound parabolic reflector and Fresnel lens are used coordinately.By using Tracepro software to conduct modeling and ray tracing simulation,the design scheme with moderate light angle,effective light spot of 1000mm and uniformity of 85%is obtained,whose uniformity is improved by 47.3%compared with Lambertian illumination.