红外与激光工程, 2018, 47 (12): 1218007, 网络出版: 2019-01-10   

精准农业观测高数值孔径短波红外成像光谱仪光学系统

Optical system of imaging spectrometer in short-wave infrared with high NA for precision agriculture observation
作者单位
中国科学院安徽光学精密机械研究所, 安徽 合肥 230031
摘要
研究了一种在1.0~2.5 μm短波红外波段上可用于机载精准农业观测的成像光谱仪光学系统。研究分析了用于精准农业探测所需的成像光谱仪科学性能参数, 着重改进了Dyson成像光谱仪系统并获得了完善的消像散条件, 使得其各组成部分在沿光轴方向和垂直光轴方向均具备足够的空间, 确保了狭缝、探测器和光学镜片的光机结构放置。设计成像光谱仪具备良好光学性能, 光学系统F数为1.5, 视场28°, 狭缝长度25 mm, 光谱分辨率12.7 nm, 空间分辨率1 mrad, 系统像差得到充分校正, 公差比较宽松。该系统的研究将为精准农业遥感应用提供一种思路。
Abstract
An imaging spectrometer in the short infrared waveband of 1.0-2.5 μm was obtained for the precision agriculture observation by air. The scientific performances parameters of the imaging spectrometer were analyzed for the requests of the precision agriculture. The perfect astigmatism corrected conditions were obtained based on the advanced Dyson imaging spectrometer. The enough axial and lateral spaces among each parts of the system guaranteed the arrangement of mechanisms of the slit, the detector and the optical elements. An imaging spectrometer with high optical performances as F number 1.5, the field of view 28°, the slit length 25 mm, the spectral resolution 12.7 nm and the spatial resolution 1 mrad was designed. The aberrations were totally corrected and the tolerances of the system were loose. The research will be helpful for application of precision agriculture remote sensing.

于磊, 陈素娟, 陈结祥, 薛辉. 精准农业观测高数值孔径短波红外成像光谱仪光学系统[J]. 红外与激光工程, 2018, 47(12): 1218007. Yu Lei, Chen Sujuan, Chen Jiexiang, Xue Hui. Optical system of imaging spectrometer in short-wave infrared with high NA for precision agriculture observation[J]. Infrared and Laser Engineering, 2018, 47(12): 1218007.

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