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Structure and mechanical design for a large-aperture telescope 会议论文  OAI收割
Nanjing, PEOPLES R CHINANanjing, PEOPLES R CHINA, OCT 24-26, 2017OCT 24-26, 2017
作者:  
Tan, Yufeng;  Wang, Jihong;  Ren, Ge;  Ren, Xiaoli;  Xie, Zongliang
  |  收藏  |  浏览/下载:36/0  |  提交时间:2019/08/23
Dimensionless design model for biaxial Cartwheel flexure hinges 期刊论文  OAI收割
Mechanics Based Design of Structures and Machines, 2018, 卷号: 46, 期号: 4, 页码: 401-409
作者:  
Li, Z. X.;  Chen, X.;  Jin, G.
  |  收藏  |  浏览/下载:16/0  |  提交时间:2019/09/17
Advanced astigmatism-corrected tandem Wadsworth mounting for small-scale spectral broadband imaging spectrometer (EI CONFERENCE) 会议论文  OAI收割
作者:  
Lin G.-Y.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
Tandem gratings of double-dispersion mount make it possible to design an imaging spectrometer for the weak light observation with high spatial resolution  high spectral resolution  and high optical transmission efficiency. The traditional tandem Wadsworth mounting is originally designed to match the coaxial telescope and large-scale imaging spectrometer. When it is used to connect the off-axis telescope such as off-axis parabolic mirror  it presents lower imaging quality than to connect the coaxial telescope. It may also introduce interference among the detector and the optical elements as it is applied to the short focal length and small-scale spectrometer in a close volume by satellite. An advanced tandem Wadsworth mounting has been investigated to deal with the situation. The Wadsworth astigmatism-corrected mounting condition for which is expressed as the distance between the second concave grating and the imaging plane is calculated. Then the optimum arrangement for the first plane grating and the second concave grating  which make the anterior Wadsworth condition fulfilling each wavelength  is analyzed by the geometric and first order differential calculation. These two arrangements comprise the advanced Wadsworth mounting condition. The spectral resolution has also been calculated by these conditions. An example designed by the optimum theory proves that the advanced tandem Wadsworth mounting performs excellently in spectral broadband. 2012 Optical Society of America.  
Design and test of pointing mirror assembly for spaceborne remote sensing camera (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electronics, Communications and Control, ICECC 2011, September 9, 2011 - September 11, 2011, Ningbo, China
作者:  
Chen W.
收藏  |  浏览/下载:34/0  |  提交时间:2013/03/25
In order to ensure the surface figure of the pointing mirror (460mm long  290mm wide) in spaceborne remote sensing camera  Silicon Carbide was selected as the mirror material. The form of composite triangular and rectangular and the combination of open and closed back was explored in the lightweight design. A new kinematic mount and flexible structure in axis is used to hold the mirror around the lateral surface. The structure can minimize distortions induced by coefficient of thermal expansion mismatch among the materials. This eliminates the bending of the integral mount under the weight of the mirror. Optical performance of the mirror was analyzed under gravity load and temperature load using finite element method. Predicted surface figure error based on the removal of bias  tilt and power was calculated using an in-house Matlab script for mirrors. The pointing mirror assembly was tested using open loop servo control. And the surface figure was checked using interferometer. Surface figure accuracy is better than 1/30 ( 632.8nm  rms). The results show that the kinematic mount induces minimal figure error on the optical surface. 2011 IEEE.  
Transient thermal and structural deformation and its impact on optical performance of projection optics for extreme ultraviolet lithography 期刊论文  iSwitch采集
Japanese journal of applied physics part 1-regular papers brief communications & review papers, 2007, 卷号: 46, 期号: 10a, 页码: 6568-6572
作者:  
Liu, Ke;  Li, Yanqiu;  Zhang, Fuchang;  Fan, Mingzhe
收藏  |  浏览/下载:31/0  |  提交时间:2019/05/10