摘要
设计了由超大口径前置望远系统和超大视场光谱仪组成的超大口径高光谱海洋水色仪.前置望远系统采用同轴三反光学系统结构,口径为4 m,视场为0.64°,焦距为21.6 m,波段范围为400~1 000nm.超大视场光谱仪采用改进的Offner结构,视场为240mm,光谱分辨率为10nm.探测器像元尺寸为15μm×15μm,4片探测器交错拼接实现400km幅宽.超大视场光谱仪在400~1 000nm的宽波段内,点列图半径的均方根值均小于3.9μm,静止轨道高光谱海洋水色仪全系统不同波长的MTF在33.3lp/mm处大于0.52,各项指标均满足应用要求.
An ultra-large-caliber hyperspectral ocean water meter composed of an ultra-large-caliber front telescope system and an ultra-large-field-of-view spectrometer is designed.The front telephoto system uses a coaxial three-reflection optical system structure with a diameter of 4 m,a field of view of 0.64°,a focal length of 21.6 m,and a wavelength range of 400 to 1 000 nm.The large field of view spectrometer uses an improved Offner structure with a field of view of 240 mm and a spectral resolution of 10 nm.The detector pixel size is 15μm ×15μm,and four detectors are staggered to achieve a width of 400 km.The ultra-large field-of-view spectrometer is in a wide band of 400 to 1 000 nm,and the root mean square value of the dot chart radius is less than 3.9μm.The MTF of the entire system of the static orbit hyperspectral ocean water meter is greater than 0.52 at 33.3 lp/mm,and each index meets the application requirements.
作者
薛庆生
田中天
杨柏
纪振华
栾晓宁
牟冰
邱心涛
XUE Qing-sheng;TIAN Zhong-tian;YANG Bai;JI Zhen-hua;LUAN Xiao-ning;MU Bing;QIU Xin-tao(College of Information Science&Engineering,Ocean University of China,Qingdao,Shandong 266100,China;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Jilin 130033,China;Qingdao Product Quality Supervision and Inspection Institute,Qingdao,Shandong 266100,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2020年第5期45-54,共10页
Acta Photonica Sinica
基金
国家重点研发计划(Nos.2016YFB0500300,2016YFB0500301,2016YFB0500302,2016YFB0500303,2016YFB0500304,2018YFF01011003)
国家自然科学基金项目(Nos.41575023,41105014)
吉林省科技发展计划(No.20190302083GX)
中国工程院咨询研究项目(No.2020-XZ-5)。
关键词
光学设计
海洋水色
望远系统
光谱仪
分辨率
Optical design
Ocean color
fore-telescope
Spectrometer
Resolution
