Wang Shang, Wang Kai, Chen Fei, Liu Sheng
Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Opt Express. 2011 Jul 4;19 Suppl 4:A716-24. doi: 10.1364/OE.19.00A716.
In this study, we proposed an effective optical design method to solve the problem of prescribed illuminance for LED chip array packaging (LCAP). With this method, light energy redistribution can be obtained by optimizing meshing parameters on the target. Not only can it deal with light controlling of extended source, but also improve the uniformity of both illuminance and luminance for road lighting as well. As an example, we designed a 16W LED packaging with a smooth primary freeform lens for general road lighting. The simulation results demonstrated that optical performance of this lens can meet the requirements of Commission Internationale del'Eclairage (CIE) quite well. Longitudinal and overall uniformities are 0.7 and 0.5 respectively, and relative optical efficiency of luminaire can be enhanced 19.6% in theory compared with traditional optics.
在本研究中，我们提出了一种有效的光学设计方法来解决LED芯片阵列封装（LCAP）中规定照度的问题。通过这种方法，可以通过优化目标上的网格化参数来实现光能的重新分配。它不仅可以处理扩展光源的光控制，还能提高道路照明中照度和亮度的均匀性。例如，我们为一般道路照明设计了一款带有光滑初级自由曲面透镜的16W LED封装。模拟结果表明，该透镜的光学性能能够很好地满足国际照明委员会（CIE）的要求。纵向均匀度和整体均匀度分别为0.7和0.5，与传统光学相比，灯具的相对光学效率理论上可提高19.6%。
