机构地区: 漳州师范学院物理与电子信息工程系
出 处: 《光电子.激光》 2012年第11期2096-2101,共6页
摘 要: 为准确计算LED光场以及内部温度场的分布,结合有限体积数值模拟、非成像光学方法建立了单个LED光学以及热学模型,并通过实验测试证实模型的有效性。在此基础上,采用能量叠加原理讨论了LED弧面阵列系统目标平面区域的照度分布,得到了在特定距离的目标平面上均匀的照度分布。通过对复合型散热器系统结构中散热通道内钉柱与翅片的位置尺寸、基板厚度和器件间距的优化设计,增强了热交换效果。 In this paper,the optical and thermal model of a single LED is established with finite volume thermal simulation method and non-imaging optics to accurately calculate the optical field and tempera- ture field distributions. Experiments are conducted to confirm the validity of the model. Then the lumi nous intensity distribution on the target plane of the LED arc-array system is discussed by energy super- position theory,and the uniform illumination can be obtained on the target plane at a certain distance. Furthermore,the sices of fins and pins of the composite heatsink, the base thickness and component spacing are optimized for heat convection enhancement.