摘要
介绍了一种LED自由曲面准直透镜的设计方法,并运用该方法设计了一款基于全内反射,结构的准直透镜。对初始结构不断进行逼近,最终得到准直透镜的模型。透镜外径为35 mm,总高为21.5 mm。透镜匹配Cree公司XPE光源进行计算机模拟,效率高达84.8%,K值高达125.8 cd/lm。模拟应用于35 W的探照灯时,在100 m远处形成一个直径为8 m的圆形光斑,光斑中心照度高达60 lux。透镜实际样品被制作出后,经过测试,实际透镜的光束角为3.2°。此款透镜被用于实际探照灯灯具中。
A design method for collimating LED lens with free surface is introduced and a practical collimating lens with the method based on TIR（ Total Internal Reflection） is designed by approximating for the final 3D model successfully. The maximum diameter of the lens is 1 mm with a height of 2 mm. Computer simulation with the lens matched with CREE-XPE shows an efficiency of 84. 8% and a K value of 125. 8 cd / lm. With the lens applied to35 W searchlight,a spot of a diameter of 8 m results with the spot center illumination up to 60 lux 100 m away3. 2°. Tests on the fabricated collimation lens show a beam angle of. The lens is used in the actual searchlights.
出处
《电子科技》
2016年第1期5-8,共4页
Electronic Science and Technology
基金
国家自然科学基金资助项目(11204107)
