用于LED准直的TIR透镜与反光杯效果研究  

Study on Effect of TIR Lens and Reflector for LED Collimation

作　　者：王海洋 金志樑 王沛沛[1] 熊大曦[1] Wang Haiyang;Jin Zhiliang;Wang Peipei;Xiong Daxi(Light Health Center,Suzhou Institute of Biomedical Engineering and Technology,Chinese Academy of Sciences,Suzhou,Jiangsu 215163,China)

机构地区：[1]中国科学院苏州生物医学工程技术研究所光健康中心,江苏苏州215163

出　　处：《激光与光电子学进展》2021年第19期320-325,共6页Laser & Optoelectronics Progress

摘　　要：为了对比TIR(Total Internal Reflection)透镜和自由曲面反光杯用于LED(Light-Emitting Diode)光源准直的效果,基于TracePro分别仿真LED光源在相同口径的TIR透镜和反光杯下的有效射程和光斑直径,对比相同口径的TIR透镜和反光杯下的准直特点。研究结果表明,随着口径的增加,射程均有所增加,光线形态经历三个阶段,对应光斑有三种形态,即矩形形态、复峰形态和驼峰形态;光源经过反光杯后的光斑直径更小且存在滞后效应;LED光源经过TIR透镜后的射程更远,但相差较小;当光斑口径过大时,两种光学系统均形成光环。In order to compare the collimation effect of TIR(Total Internal Reflection)lens and free-form reflector for LED(Light-Emitting Diode)light source.Based on TracePro,the effective range and spot diameter of LED light source are simulated under TIR lens and reflector of the same caliber,and the collimation characteristics of TIR lens and reflector of the same caliber are compared.The results show that with the increase of aperture,the range increases,and the light pattern goes through three stages,and the corresponding light spot has three forms,namely rectangular shape,double peak shape and hump shape.After the light source passes through the reflector,the spot diameter is smaller and there is lag effect.The range of LED light source after passing through the TIR lens is longer,but the difference is small.When the aperture of the spot is too large,both optical systems form rings.

关 键 词：光学设计 LED TIR透镜 反光杯 仿真 

分 类 号：O439[机械工程—光学工程]