1 南京航空航天大学自动化学院, 江苏 南京 211100
2 中国地质调查局南京地质调查中心, 江苏 南京 210016
3 江苏三深光谱感知技术研究院有限公司, 江苏 南京 211135
利用矢量衍射理论,对矩形槽型光栅和三角槽型光栅分别进行衍射效率分析,结果表明三角槽型光栅的衍射效率比矩形槽型光栅高出1倍左右。基于五轴超精密单点金刚石车床切削工艺,计算了金刚石刀头移动误差、移动间隔标准偏差范围、光栅刻线位置的加工偏差,并分析了刀头磨损对光栅衍射效率的影响。在此基础上,成功研制了曲率半径为70 mm、刻线密度为60 line/mm、直径为52 mm的凸面闪耀光栅,在1000~2500 nm光谱范围内,其最大相对衍射效率大于80%,平均相对衍射效率大于60%。实际飞行高光谱数据表明,基于该光栅研制的短波红外成像光谱仪满足地质遥感技术要求。
光栅 成像光谱 凸面光栅 衍射效率 超精密加工 短波红外 光学学报
2020, 40(12): 1205002
Author Affiliations
Abstract
Core mineral spectrometer is one of the advanced and important tools for core digitalization, altered mineral mapping, ore deposits exploring, and ore-searching in surrounding mine and beneficiation process. In this letter, a new core mineral spectrometer (CMS 350) is designed and developed. The basic principle, structural design, function module, key components, data acquisition, and processing methods of CMS 350 are introduced. In addition, some applications and results of CMS 350 in Zijin Mining are presented to validate the performance of CMS 350.
300.6190 Spectrometers 000.3110 Instruments, apparatus, and components common to the sciences Chinese Optics Letters
2014, 12(8): 083002
