摘要
在LED双面平板照明灯具中,为实现侧入式近场均匀照明,研究了一种LED柱面透镜阵列自由曲面投射器。根据非成像光学理论中的边缘光线原理,采用直接法和重叠法设计投射器的表面形状,利用反射旋转面和折射旋转面以及柱面透镜阵列将LED光源发出的朗伯光重新分配。建立侧面近场均匀照明的柱面透镜阵列自由曲面投射器模型,用TracePro软件对所设计的模型进行光线追迹仿真,结果表明,当不考虑反射损耗时投射器的出光效率达到96.03%,在投射器侧面的面板上面积为240mm×360mm的照度均匀度达到95.6%。
In order to meet the requirements of uniform illumination of near-field on the lateral panels for double side LED light box and double side LED flat light, a free-form LED projector with cylindrical lens array is presented. According to the edge-ray principle based on the non-imaging optics theory, the surface shape of the projector is designed by using the direct method and overlapping, and the Lambert light source of the LED is redistributed under the action of the reflection rotation surface, refraction rotation surface and the cylindrical lens array. The cylindrical lens array free-form surface projection model of the lateral near-field uniform illumination is established, and TracePro software is used to simulate the designed model for ray tracing. The results show that the luminous efficiency is 96.03% without considering the reflection loss, and the uniform illumination with the projector of the lateral panel sized 240 mm× 360 mm is 95.6%.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2014年第3期220-226,共7页
Acta Optica Sinica
基金
福建省科技计划重点项目(2012H0029)
