Design and improvement of long-focal-length space optical system

2011 ◽  
Author(s):  
Xiao-Xiao Wei ◽  
Feng Xu ◽  
Yun-feng Nie ◽  
Jian-jun Yu
2021 ◽  
Author(s):  
Wei-jun Chang ◽  
Bo Zhang ◽  
Ge-ping Cao

2021 ◽  
Vol 2112 (1) ◽  
pp. 012021
Author(s):  
Chong Song ◽  
Lipeng Huo ◽  
Yong Huang ◽  
Yangdong Yan ◽  
Gang Wang ◽  
...  

Abstract Based on the optical system characteristics of coded aperture snapshot spectral imager (CASSI), an optimized optical system of shortwave infrared dual camera CASSI was designed based on improved Offner-Wynne imaging spectrometer. The operating wavelength of the optical system ranges from 900nm to 1700nm, and the focal length is 1200mm. It consists of two parts: the two dimensional imaging system and the multispectral CASSI imaging system. The key technical parameters of the two parts are the same and there is no visual axis difference. Therefore, the optimized optical system can effectively improve real-time performance, optical transmittance and compactness of the dual camera shortwave infrared CASSI, which is conducive to the application in optical measurement scenes in the shooting range.


2012 ◽  
Vol 9 (1) ◽  
pp. 148-152
Author(s):  
Baghdad Science Journal

A computational investigation has been carried out on the design and properties of the electrostatic mirror. In this research, we suggest a mathematical expression to represent the axial potential of an electrostatic mirror. The electron beam path under zero magnification condition had been investigated as mirror trajectory with the aid of fourth – order – Runge – Kutta method. The spherical and chromatic aberration coefficients of mirror has computed and normalized in terms of the focal length. The choice of the mirror depends on the operational requirements, i.e. each optical element in optical system has suffer from the chromatic aberration, for this case, it is use to operate the mirror in optical system at various values of chromatic aberration to correct it in that system.


2020 ◽  
Vol 49 (9) ◽  
pp. 20200061-20200061
Author(s):  
伍雁雄 Yanxiong Wu ◽  
乔健 Jian Qiao ◽  
王丽萍 Liping Wang

2010 ◽  
Vol 30 (4) ◽  
pp. 1140-1143
Author(s):  
张蕊蕊 Zhang Ruirui ◽  
沈为民 Shen Weimin

2014 ◽  
Vol 7 (4) ◽  
pp. 631-637
Author(s):  
白玉琢 BAI Yu-zhuo ◽  
木锐 MU Rui ◽  
马琳 MA Lin ◽  
贾钰超 JIA Yu-chao ◽  
普群雁 PU Qun-yan ◽  
...  

2014 ◽  
Vol 7 (2) ◽  
pp. 293-300
Author(s):  
李刚 LI Gang ◽  
杨晓许 YANG Xiao-xu ◽  
张恒金 ZHANG Heng-jin ◽  
孙东岩 SUN Dong-yan

2012 ◽  
Vol 41 (3) ◽  
pp. 358-363
Author(s):  
李宏壮 LI Hong-zhuang ◽  
张振铎 ZHANG Zhen-duo ◽  
曹景太 CAO Jing-tai ◽  
刘欣悦 LIU Xin-yue ◽  
李洪文 LI Hong-wen ◽  
...  
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