摘要多光谱成像是新一代光电探测技术，广泛应用于陆地海洋遥感监测、医疗 光谱成像、军事目标侦查等方面。本文主要研究基于光场成像理论的瞬态多光 谱成像，利用孔径分割的方法，能够同时获得目标信息的多个谱段，提高了探 测器的效率。本系统主要由成像主透镜、微透镜阵列和再成像系统三部分组成。 在成像主透镜的孔径光阑放置滤光片阵列，采用孔径分割方法引入目标的各个 谱段的信息，运用 matlab 软件编写图像处理程序对探测器得到的信息进行处理， 以像素作为处理单元提取之后得到不同谱段的光谱图像。通过对样机的设计和 调试，我们以四通道光谱为例，对本系统的可行性和正确性进行了验证。68512

毕业论文关键词 多光谱 光场成像 微透镜阵列 滤光片阵列 孔径分割

Title The Research of Multispectral Light Filed Camera

Abstract

Multispectral imaging is the optical detection technology of next generation, widely used in land and sea remote sensing, medical imaging spectroscopy, investigation of military targets and so on. In this paper, our research is transient multispectral imaging based on the theory of light field imaging. Using the method of aperture segmentation, the system can obtain multispectral image of the target at the same time, which improves the efficiency of the detector. The system consists of the main imaging lens, a microlens array and re-imaging system. By placing filter array in the aperture stop of the main imaging lens, it uses the method of aperture to obtain multispectral information of the target, and then use matlab to program for processing the information from the detector. The program obtains the multispectral image with pixels as the processing unit. By designing and debugging prototype, the system take the four-channel spectrum as the example to verify feasibility and correctness of the system.

Keywords Multiple spectral Light field imaging Microlens array Filter array Aperture split

目 次

1 绪论 1

1.1 前言 1

1.2 国内外研究情况 1

1.2.1 单通道分时探测法 2

1.2.2 多通道瞬时探测法 3

1.2.3 光场成像理论 4

1.3 本课题的主要研究工作 5

2 基于孔径分割的多光谱成像方法研究 6

2.1 系统光路的设计方法 6

2.1.1 光路设计 6

2.1.2 再成像系统设计 7

2.2 关键元件的设计方法 9