近视防控离焦镜片像质评价方法的探讨  

Image quality evaluation method of myopia prevention and control defocus lens

作　　者：缪汉源 葛澜 金涛[1,2] 项华中[1,2] 张大伟[1,2] 庄松林[1,2] MIAO Hanyuan;GE Lan;JIN Tao;XIANG Huazhong;ZHANG Dawei;ZHUANG Songling(Shanghai Key Laboratory of Modern Optical System,University of Shanghai for Science and Technology,Shanghai 200093,China;School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光学仪器与系统教育部工程研究中心,上海200093 [2]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《光学仪器》2022年第2期31-36,共6页Optical Instruments

基　　金：国家重点研发计划(2020YFB2007501)。

摘　　要：近视防控离焦镜片的光学性能评价的过程中,通常以镜片的屈光度地形图作为分析依据,对成像质量的影响目前研究较少。从像质评价入手,搭建了一套镜片-相机测试系统用于测量离焦镜片的光学传递函数(MTF)。整个系统是由光源、成像模块、镜片夹持工具、棋盘标定板和MTF分析软件系统组成的。实验过程中对相机镜头、国内明月离焦镜片、国外Z品牌离焦镜片的MTF进行了测试和比较。结果显示镜片MTF分布与光焦度分布一致,光焦度和离焦量的设计相关。因此对离焦镜片的像质测试不仅能分析镜片的光学性能还可以分析其离焦量,为离焦镜片设计提供了一种新的评价方式。The quality of defocusing lenses for myopia prevention and control is still based on the analysis of the diopter topographic map,and the influence on imaging quality is rarely studied.In this paper,a lens-camera test system was established to measure the modulation transfer function(MTF)of defocusing lens from the perspective of image quality evaluation.The system consists of a light source,an imaging module,a lens gripping tool,and a checkerboard.The results show that the distribution of MTF and diopter of a lens are same.The diopter,on the other hand,indicates the defocus amount of the lens.Therefore,the method of image quality evaluation could provide a way for analysis of the optical property and defocus amount of defocus lenses.It provides a new evaluation method for defocus lens design.

关 键 词：离焦镜片 像质评价 光学传递函数 离焦量 

分 类 号：TH74[机械工程—光学工程]