测量视觉系统MTF的一种客观方法  

An objective method for measuring modulation transfer function of human vision system

作　　者：全薇[1,2] 凌宁[1] 宋贵才[3] 王肇圻[2] 陈志辉[1] 

机构地区：[1]中国科学院光电技术研究所,四川成都610209 [2]南开大学、天津大学联合研究院,南开大学现代光学研究所,天津300071 [3]长春理工大学,吉林长春130022

出　　处：《光电工程》2004年第1期20-22,共3页Opto-Electronic Engineering

基　　金：天津市科技发展计划项目(033183711)

摘　　要：视觉系统的光学调制传递函数( MTF ),通常采用以大脑知觉为基准,对客观物理刺激进行主观评价的心理物理方法来测量。利用哈特曼-夏克波前传感器测量视觉系统的波像差,再由波像差和瞳函数的自相关,即可得出视觉系统的MTF。与心理物理方法相比,该方法不受被测试者情绪和心理状态的影响,并克服了测量过程繁琐的缺陷,具有客观、简便、快捷的特点,测量的全过程仅需3分钟。With brain consciousness as reference, optical Modulation Transfer Function (MTF) of a vision system is measured by means of a psychological-physical method by which subjective evaluation is carried out for objective physical excitation. MTF of a vision system can be measured through measuring wavefront aberrations of a vision system with Hartmann-Shack wavefront sensor and self-correlation of wavefront aberrations with pupil function. Compared with psychological-physical method, the method will not be influenced by feeling and psychological state of person, and the disadvantage of over-elaborate measuring procedure is overcome. It has the advantages of objective measurement with simple and fast process. The whole measuring process can be carried out only in 3 minutes.

关 键 词：视觉系统 光学调制传递函数 哈特曼-夏克波前传感器 测量 波像差 MTF 

分 类 号：O439[机械工程—光学工程] TP212.14[理学—光学]