光学学报, 2016, 36 (2): 0230001, 网络出版: 2016-01-25   

基于短波红外成像光谱仪的矿石光谱测量

Mineral Spectrum Measurement Based on Shortwave Infrared Imaging Spectrometer
孙慈 1,*姚雪峰 1,2崔继承 1尹禄 1,2杨晋 1,2
作者单位
1 中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033
2 中国科学院大学, 北京 100049
摘要
为了实现对不同矿物成分的识别,研制了一台用于矿石光谱分析的短波红外成像光谱仪,并基于此台仪器获取了多种矿石的图像信息和光谱信息。阐述了设计原理,并对整个系统的光学设计结果进行了成像质量分析。采用单色准直光法对该系统进行了测试,得到各光谱通道的中心波长以及光谱分辨率等光谱性能参数,测试结果显示,该仪器光谱分辨率优于10 nm,满足应用需求。利用研制出的成像光谱仪对岩石样品进行了实验,并对获得的光谱曲线进行了光谱分析。实验分析结果表明,该仪器具有良好的性能,能够较为准确地判断不同矿石。设计的短波红外成像光谱仪具有高分辨率、结构简单、小型化、重量轻等优点,便于机载成像,有益于其在地质勘探领域的应用。
Abstract
In order to achieve the identification of different mineral compositions, a shortwave infrared imaging spectrometer for spectral analysis of the ore are developed. Based on this instrument, the image information and spectral information of the various minerals are obtained. The design principle of imaging spectrometer is described and image quality of the entire system is analyzed based on the result of optical design. The system performance is tested using monochromatic collimated light method and the center wavelength and spectral resolution for each spectral channel are obtained. Test results show that the spectral resolution is better than 10 nm which meets the application requirements. The rock samples are tested using the developed imaging spectrometer and the spectral curves of rock are obtained for spectral analysis. The experimental results show that the imaging spectrometer can identify different components of ore with high accuracy. The new designed shortwave infrared imaging spectrometer has the advantages of high resolution, simple structure, small size, light weight which is facilitate the application in airborne imaging, and it is useful for the application in geological exploration.

孙慈, 姚雪峰, 崔继承, 尹禄, 杨晋. 基于短波红外成像光谱仪的矿石光谱测量[J]. 光学学报, 2016, 36(2): 0230001. Sun Ci, Yao Xuefeng, Cui Jicheng, Yin Lu, Yang Jin. Mineral Spectrum Measurement Based on Shortwave Infrared Imaging Spectrometer[J]. Acta Optica Sinica, 2016, 36(2): 0230001.

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