光纤传像元件极限分辨率测量判别  

Decision of Fibre Optic Image Devices Limiting Resolution in Measurement

作　　者：陈文建[1] 迟泽英[1] 游明俊[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院

出　　处：《南京理工大学学报》1996年第5期461-464,共4页Journal of Nanjing University of Science and Technology

基　　金：国防科技预研行业基金

摘　　要：该文运用抽样理论分析了光纤传像元件的传像机理，导出了光纤传像元件分辨率测量中所产生的莫尔条纹线对数与原鉴别率板图案线对数之间的关系。当输入鉴别率板图案的线对数高于１／２光纤传像元件抽样频率时，就会产生莫尔条纹现象，两者线对数之和为光纤传像元件的抽样频率。给出了极限分辨率判别的方法，鉴别率板图案像中线对最密的一组判定为光纤传像元件分辨极限。The mechanism of image transmission in fibre optic image devices is analysed by sampling theory in this paper. The relationship is obtained between the line pairs of Moiré fringes produced in the resolution measurement of fibre optic image devices and the line pairs of the original resolution pattern. When the input line pairs of resolution pattern is higher than one half of sampling frequency of fibre optic image devices, Moiré fringes arise, the sum of the two kinds of the line pairs is the sampling frequency of fibre optic image devices. This paper also gives the way to determine limiting resolution. The closest line pairs group of the image of the resolution pattern is decided to be the resolution limit. In the end, the theoretical result is proved by experiment.

关 键 词：分辨率 光纤元件 光纤传像元件 极限分辨率 测量 

分 类 号：TN253[电子电信—物理电子学]