IS-200传函仪的测量MTF数据分析
关键词 像质评价 调制传递函数 IS-200传函仪 误差分析
毕业论文设计说明书外文摘要
Title Data Analysis of the MTF Measurement Equipment
Abstract
Image quality evaluation has been a major concern in applied optics field, and the Modulation Transfer Function(MTF) is the most objective and effective way to evaluate the image quality. Therefore, it is necessary to use instruments measure the MTF, and we have a high requirement for the measurement accuracy and speed of the instruments. Based on the IS-200 measurement equipment, the thesis studied image quality evaluation using the optical transfer function. This paper briefly describes the principles of measuring MTF, the domestic and overseas present situation of instruments measuring MTF and image quality evaluation using MTF. Besides, the thesis specifically introduces the IS-200 instrument and how it works. The thorlabs's AC-254-050-B-ML under test,the experiment was carried out. The contrast experiment using the ZYGO interferometer is conducted. Finally, a simple analysis of instrument measurement accuracy was done and the full text was summarized .
Keywords image quality evaluation modulation transfer function IS-200 measurement equipment error analysis
目 次
1 引言 1
1.1 MTF发展史 1
1.2 传函仪发展状况 2
1.3 课题研究内容 3
2 MTF介绍 4
2.1 调制度（对比度） 4
2.2 点扩散函数和线扩散函数 4
2.3 调制传递函数基本概念 4
2.4 MTF评价像质 5
3 传函仪原理 7
4 IS-200传函仪使用说明 8
4.1 IS-200传函仪系统构成 8
4.2 Matrix软件 13
4.3 IS-200传函仪快捷使用说明 18
4.4 注意事项 19
5 实验测量 20
5.1 AC-254-050-B-ML待测镜 20
5.2 IS-200传函仪测量 22
5.3 ZYGO干涉仪测量 25
6 MTF测量数据与误差分析 26
6.1 MTF测量数据 26
6.2 传函仪误差分析 31
6.3 不同频率焦点位置测试结果差异 36
结 论 37
致 谢 39
参考文献40
1 引言
现如今，人们获取各种各样信息方式很多，但是其中的80％以上是通过视觉器官（眼睛）得到的。无论在科研或是生活方面，我们总想要更精准地了解物体面型、结构，这就对现有光学系统（照相机、望远镜、显微镜等）成像质量提出了更高的要求。顺其自然地，如何评价光学系统成像质量成了我们研究的主要方向。