摘要
成像光谱仪能够高效便捷地识别和判断矿种,可大幅提高地质勘察和矿物普查的勘测效率。文中基于棱镜-光栅(PG)的分光元件,研发了一种具有结构简单、体积小、重量轻、分辨率高等优点的短波红外成像光谱仪系统。阐述和分析了该成像光谱仪的设计思路和实际成像质量,并借助单色准直光法测试了该成像光谱仪系统的光谱性能参数,实际光谱分辨率优于10 nm,性能良好,符合设计与使用要求。利用该光谱仪系统测量了多种矿石样品的光谱数据,其光谱形态与特征和美国权威实验室JPL建立的波谱库中的数据相吻合,表明本成像光谱仪系统在矿石的光谱分析中精确度良好,能较为准确地辨别矿石种类,为将来开展相关的矿石研究工作提供技术支持。
The imaging spectrometer can identify minerals efficiently and easily,which can greatly improve the efficiency of geological survey and mineral survey. In this paper,based on the splitting element of prism-grating（PG）,a shortwave infrared imaging with advantages of simple structure,small volume,light weight and high resolution is developed to meet the requirements from the country. The design principle and the imaging quality of the imaging spectrometer is described and analyzed,respectively. And the spectral performance parameters such as the center wavelength and spectral resolution of the imaging spectrometer system are tested by using monochromatic collimated light method. The actual spectral resolution is better than 10 nm,which performs well and the design and meets the design and application requirements. The spectral data of various ore samples are measured by the spectrometer system,whose spectral morphology and characteristic of the spectrometer agree well with the ones from the JPL,indicating that this imaging spectrometer system has good accuracy in the spectral analysis of the ore and in identifying different type of ore,which providing technical support for the research on mineral survey in the future.
出处
《电子科技》
2017年第10期131-134,138,共5页
Electronic Science and Technology
关键词
成像光谱仪
短波红外
地质勘察
矿物普查
棱镜-光栅
imaging spectrometer
shorwave infrared
geological survey
mineral surey
grism - grating（PG）
