注射与注射压缩成形工艺对精密透镜面形偏差及光学畸变影响的对比研究  

Comparative research of influence for injeciton and injeciton compression molding process on surface deviation and optical distortion for precision lens

作　　者：周晓伟 李茂源 张云[1] 周华民[1] Zhou Xiaowei;Li Maoyuan;Zhang Yun;Zhou Huamin(State Key Laboratory of Materials Processing and Die&Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学材料科学与工程学院材料成形与模具技术国家重点实验室,湖北武汉430074

出　　处：《锻压技术》2021年第9期230-236,共7页Forging & Stamping Technology

基　　金：国家自然科学基金重点项目(51635006)。

摘　　要：为提高精密聚合物透镜模组的光学性能,以大直径非球面透镜为研究对象,分析了注射与注射压缩成形工艺透镜面形偏差的差异,并通过透镜模组成像计算研究了透镜面形偏差对模组光学畸变的影响规律。结果表明:注塑成形工艺因素导致透镜面形偏差且分布不均匀,注射压缩成形工艺能够有效降低透镜面形偏差;单个透镜的面形偏差大小与模组光学畸变性能优劣并不完全呈正相关,模组网格畸变与TV畸变随透镜面形偏差的降低而减小。透镜模组中各透镜的光学功能与面形特征相互耦合,仅降低透镜的面形偏差无法提高透镜模组的整体成像性能,需要综合考虑模组中各透镜的功能、性能指标要求与面形特征等因素,建立与具体成像指标相关联的透镜面形偏差评价标准。In order to improve the optical performance of precision polymer lens modules,for a large diameter aspheric lens,the difference of lens surface deviation between injection and injection compression molding process was analyzed,and the influence laws of lens surface deviation on the optical distortion for lens module was investigated by the lens module imaging calculation.The results show that the injection molding process factors cause the lens surface deviation and uneven distribution,and the injection compression molding process effectively deduces the lens surface deviation.Meanwhile,the surface deviation of a single lens is not completely positively correlated with the optical distortion performance of lens module,and the grid distortion and TV distortion of lens module decrease with the reduction of lens surface deviation.However,the optical functions and surface characteristics of each lens in the lens module are coupled with each other,which only reduces the lens surface deviation,but cannot improve the overall imaging performance of the lens module.Thus,it is necessary to comprehensively consider the function,performance index requirements and surface characteristics of each lens in the module and establish the evaluation standard of the lens surface deviation associated with the specific imaging index.

关 键 词：精密透镜 注射压缩成形 面形偏差 透镜模组 光学畸变 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]