Catadioptric null test of ultra-deep concave aspheric lens in wide-field optical system

2013 ◽  
Vol 52 (19) ◽  
pp. 4738
Author(s):  
Xing Zhong ◽  
Guang Jin
Keyword(s):  
Optical System ◽  
Wide Field ◽  
Aspheric Lens

scholarly journals Wide field-of-view crossed Dragone optical system using anamorphic aspherical surfaces

2018 ◽  
Vol 57 (15) ◽  
pp. 4171 ◽  
Author(s):  
Shingo Kashima ◽  
Masashi Hazumi ◽  
Hiroaki Imada ◽  
Nobuhiko Katayama ◽  
Tomotake Matsumura ◽  
...  
Keyword(s):  
Optical System ◽  
Field Of View ◽  
Wide Field ◽  
Wide Field Of View

scholarly journals Space Variant PSF – Deconvolution of Wide-Field Astronomical Images

10.14311/1023 ◽  
2008 ◽  
Vol 48 (3) ◽  
Author(s):  
M. Řeřábek
Keyword(s):  
Optical System ◽  
Imaging System ◽  
Real Data ◽  
Wavefront Aberration ◽  
Wide Field ◽  
Optical Aberrations ◽  
Optical Aberration ◽  
Transfer Characteristics ◽  
Astronomical Images ◽  
Space Variant

The properties of UWFC (Ultra Wide-Field Camera) astronomical systems along with specific visual data in astronomical images contribute to a comprehensive evaluation of the acquired image data. These systems contain many different kinds of optical aberrations which have a negatively effect on image quality and imaging system transfer characteristics, and reduce the precision of astronomical measurement. It is very important to figure two main questions out. At first: In which astrometric depend on optical aberrations? And at second: How optical aberrations affect the transfer characteristics of the whole optical system. If we define the PSF (Point Spread Function) [2] of an optical system, we can use some suitable methods for restoring the original image. Optical aberration models for LSI/LSV (Linear Space Invariant/Variant) [2] systems are presented in this paper. These models are based on Seidel and Zernike approximating polynomials [1]. Optical aberration models serve as suitable tool for estimating and fitting the wavefront aberration of a real optical system. Real data from the BOOTES (Burst Observer and Optical Transient Exploring System) experiment is used for our simulations. Problems related to UWFC imaging systems, especially a restoration method in the presence of space variant PSF are described in this paper. A model of the space variant imaging system and partially of the space variant optical system has been implemented in MATLAB. The “brute force” method has been used for restoration of the testing images. The results of different deconvolution algorithms are demonstrated in this paper. This approach could help to improve the precision of astronomic measurements. 

Optical Design of Off-Axis Four-Mirror Optical System with Wide Field of View

2013 ◽  
Vol 33 (10) ◽  
pp. 1022002
Author(s):  
刘军 Liu Jun ◽  
刘伟奇 Liu Weiqi ◽  
康玉思 Kang Yusi ◽  
吕博 Lü Bo ◽  
冯睿 Feng Rui ◽  
...  
Keyword(s):  
Optical System ◽  
Optical Design ◽  
Field Of View ◽  
Wide Field ◽  
Wide Field Of View

Design of Wide Field-of-View and Multi-Targets 3D Imaging Optical System with Coaxial Five Mirrors

2018 ◽  
Vol 38 (6) ◽  
pp. 0608001
Author(s):  
刘莹奇 Liu Yingqi ◽  
骆媛 Luo Yuan ◽  
鲁华 Lu Hua ◽  
梅甫麟 Mei Fulin ◽  
舒营恩 Shu Ying’en
Keyword(s):  
Optical System ◽  
3D Imaging ◽  
Field Of View ◽  
Wide Field ◽  
Wide Field Of View

Optical System Design of Airborne Wide Field-of-view Hyperspectral Imager

2014 ◽  
Vol 43 (10) ◽  
pp. 1022001
Author(s):  
陈伟 CHEN Wei ◽  
郑玉权 ZHENG Yu-quan ◽  
薛庆生 XUE Qing-sheng
Keyword(s):  
System Design ◽  
Optical System ◽  
Field Of View ◽  
Wide Field ◽  
Optical System Design ◽  
Wide Field Of View

Optical system of middle-short distance docking imaging sensor with wide field

2015 ◽  
Vol 41 (2) ◽  
pp. 162-165
Author(s):  
王长庚 WANG Changgeng ◽  
齐向东 QI Xiangdong ◽  
许晶 XU Jin
Keyword(s):  
Optical System ◽  
Short Distance ◽  
Wide Field ◽  
Imaging Sensor

scholarly journals Wide-Field-Imaging 3-Mirror-Systems by High Light Gathering Power and a Wide-Field Optical System for the ‘Large Imaging Telescope’ (Lite)

1994 ◽  
Vol 161 ◽  
pp. 101-107
Author(s):  
U. Laux
Keyword(s):  
Optical System ◽  
High Light ◽  
Field Of View ◽  
Wide Field ◽  
Light Gathering Power ◽  
Imaging Telescope ◽  
Light Gathering ◽  
Field Imaging ◽  
Wide Field Imaging

The desire of astronomers for wide field telescope systems which surpass the RCC (1:8 max. 1.5 degree) in light gathering power and field of view are relative concrete today. For this type of telescope, detectors planned ARE CCDs in multichip arrangement.

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