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

2011 ◽  
Author(s):  
Xiao-Xiao Wei ◽  
Feng Xu ◽  
Yun-feng Nie ◽  
Jian-jun Yu
Keyword(s):  
Optical System ◽  
Focal Length ◽  
Length Space

Long focal length and large aperture zoom optical system

2021 ◽  
Author(s):  
Wei-jun Chang ◽  
Bo Zhang ◽  
Ge-ping Cao
Keyword(s):  
Optical System ◽  
Focal Length ◽  
Large Aperture

scholarly journals Optical Design of a Shortwave Infrared Dual Camera CASSI Based on Improved Offner-Wynne Imaging Spectrometer

2021 ◽  
Vol 2112 (1) ◽  
pp. 012021
Author(s):  
Chong Song ◽  
Lipeng Huo ◽  
Yong Huang ◽  
Yangdong Yan ◽  
Gang Wang ◽  
...  
Keyword(s):  
Optical System ◽  
Imaging System ◽  
Optical Measurement ◽  
Focal Length ◽  
Optical Design ◽  
Optical Transmittance ◽  
Coded Aperture ◽  
Visual Axis ◽  
Imaging Spectrometer ◽  
Shortwave Infrared

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.

scholarly journals A proposed Mathematical Expression for Computer Design of Electrostatic Mirror

2012 ◽  
Vol 9 (1) ◽  
pp. 148-152
Author(s):  
Baghdad Science Journal
Keyword(s):  
Optical System ◽  
Focal Length ◽  
Mathematical Expression ◽  
Optical Element ◽  
Chromatic Aberration ◽  
Computer Design ◽  
Computational Investigation ◽  
Beam Path ◽  
Runge Kutta Method ◽  
Electrostatic Mirror

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.

Optical system design of star sensor with long focal length and athermalization

2020 ◽  
Vol 49 (9) ◽  
pp. 20200061-20200061
Author(s):  
伍雁雄 Yanxiong Wu ◽  
乔健 Jian Qiao ◽  
王丽萍 Liping Wang
Keyword(s):  
System Design ◽  
Optical System ◽  
Focal Length ◽  
Star Sensor ◽  
Optical System Design

Long Focal-Length Optical System Using Annular Aperture

2010 ◽  
Vol 30 (4) ◽  
pp. 1140-1143
Author(s):  
张蕊蕊 Zhang Ruirui ◽  
沈为民 Shen Weimin
Keyword(s):  
Optical System ◽  
Focal Length ◽  
Annular Aperture

Design of infrared optical system with super-long focal length and dual field-of-view

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 ◽  
...  
Keyword(s):  
Optical System ◽  
Focal Length ◽  
Field Of View

Design of cooled infrared switch-zoom optical system with long effective focal length based on R-C system

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
Keyword(s):  
Optical System ◽  
Focal Length ◽  
Effective Focal Length

Design of Zoom Optical System with Long Focal Length and Super-high Zoom Ratio

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 ◽  
...  
Keyword(s):  
Optical System ◽  
Focal Length
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