三角共路分光方式高光谱显微成像研究
时间:2021-01-31 21:11 来源:毕业论文 作者:毕业论文 点击:次
摘要随着干涉高光谱成像技术的发展，显微领域的干涉成像越来越受到人们的重视。本课题通过分析傅里叶变换光谱理论，推导出干涉图表达式和傅里叶光谱变换式。并在干涉高光谱成像技术的基础上，设计了一个基本的可实现像面干涉高光谱显微成像的光学系统。了解到目前对显微光谱成像的不同设计方法在于分光方式，经过各类分光方式的优缺点比较，本次课题选用了三角共路分光方式，有效地利用两个半五棱镜实现了将一束入射光横向剪切成两束相干光。最后搭建了显微光谱成像实验系统，成功获得多幅清晰、对比度高的干涉图像，证明了本课题的原理和系统设计的有效性和可行性。63013 毕业论文关键词 高光谱 显微成像 傅里叶变换 横向剪切分束器 毕业设计说明书（论文）外文摘要 Title Research on hyperspectral microscopic imaging Abstract With the development of interference hyperspectral imaging techniques, the interference imaging in microscopic field is drawing increasing attention. The expressions of interferogram and Fourier Spectrometer Transform is deduced by the theory of Fourier Transformation Spectrum in this paper, and a basic optical system based on the interference hyperspectral imaging techniques is designed, which can achieve the interference hyperspectral imaging technique in the image plane for microscopic imaging.Currently, the difference in the design of microscopic spectral imaging lies in the spectrometric way used. After understanding the principle and comparing the advantages and disadvantages of the various spectrometric ways, the triangular path splitting means is selected. It can pide a beam of incident light into two coherent lights in horizontal direction by the effective use of two half pentaprism.Finally, the experimental system of microscopic spectral imaging is established, multiple interference images of desirable definition and high-contrast are successfully obtained, hence, proving the principle of this project and the effectiveness and feasibility of the system designed. Keywords Hyperspectral image Microscopic imaging Fourier Transform Spectrometer Lateral shearing beam splitter 1 引言 1 1.1 研究背景 1 1.3 本课题主要研究内容 5 2 傅里叶变换光谱理论 7 3 像面干涉高光谱显微成像 10 3.1 像面干涉光谱成像 10 3.1.1 原理分析 10 3.1.2 特点说明 11 3.2 基于二次成像的像面干涉光谱成像原理 11 3.3 像面干涉高光谱显微成像的原理和方法 12 3.3.1 成像系统 12 3.3.2 横向剪切分束器 13 3.3.3 显微成像理论分析 15 3.3.4 光谱分辨率 16 3.3.5 景深 17 4 实验与结果 20 4.1 实验装置 20 4.2 实验图像与结果 21 结 论 (责任编辑：qin) |