激光与光电子学进展, 2017, 54 (2): 022204, 网络出版: 2017-02-10
实现角度偏转的LED二次光学透镜设计 下载: 672次
Secondary Optical Lens Design for LED to Achieve Angular Deflection
摘要
通过光学建模软件Light Tools设计了一款适用于机器视觉的自带角度偏折的发光二极管 (LED)聚光透镜, 材料为聚甲基丙烯酸甲酯(PMMA)。首先根据所需工作距离和照明尺寸建立LED模型, 然后建立投射曲面加全反射曲面的组合透镜模型,建立照度网格优化函数得到目标区域范围内的均匀照明;最后根据折射定律,对透镜进行倾斜角度的切割,以满足其对角度的要求。整个透镜结构简洁, 均匀性好, 易实现加工要求,满足机器视觉领域中对角度偏折的要求。
Abstract
Light emitting diode (LED) focusing lens with angle deflection for machine vision is designed by optical modeling software Light Tools. The lens is made of polymethyl methacrylate (PMMA). Firstly, the LED model is built according to the working distance and the illumination size. Secondly, a total reflection lens model is established with a lens model inside, and the illumination gridding optimization function is made to obtain the uniform illumination in the target area. Lastly, the lens is cut with tilted angle to meet the requirements of the angle based on the refractive law. The lens has simple structure, good uniformity, and it is easy to achieve the processing requirements. The lens meets the requirements of the angle deflection in the machine vision field.
曾赤良, 廖文哲. 实现角度偏转的LED二次光学透镜设计[J]. 激光与光电子学进展, 2017, 54(2): 022204. Zeng Chiliang, Liao Wenzhe. Secondary Optical Lens Design for LED to Achieve Angular Deflection[J]. Laser & Optoelectronics Progress, 2017, 54(2): 022204.