单缝分数傅里叶变换的透镜单色焦距测量

Measurement of monochrome focal length based on single-slit fractional Fourier transform

摘要: 透镜的单色光焦距是激光应用中的重要参数。概括了分数傅里叶变换的基本原理,讨论了利用分数傅里叶变换测量透镜焦距的实现方法和技术特点,提出了一种利用单缝的分数傅里叶变换测量透镜单色光焦距的实验方案,并给出了相应的程序设计思路。该方法自动化程度高,操作灵活,易于实现。

Abstract: Measurement of monochrome local length (MLL) of alens based on define of fractional Fourier transform is generalized and discussed.A new experimental design for testing MLL of lens by a single slitis studied,and then the experimental device and program flow chart of this method are put for ward.This method is flexible and easy to realize self-acting test.