中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
西安光学精密机械研究... [2]
力学研究所 [1]
长春光学精密机械与物... [1]
光电技术研究所 [1]
过程工程研究所 [1]
采集方式
OAI收割 [6]
内容类型
会议论文 [6]
发表日期
2019 [1]
2014 [1]
2012 [1]
2011 [2]
1905 [1]
学科主题
Chemistry,... [1]
Finite Dif... [1]
Manufactur... [1]
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Analysis and suppression of stray light in phenological network multi-spectral camera
会议论文
OAI收割
Chengdu, China, 2018-06-26
作者:
Lei, Jiao
;
Ma, Xiaolong
;
Yang, Jianfeng
;
Xue, Bin
;
Lv, Juan
  |  
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2019/03/22
A novel self-deployable baffle with vanes driven by rectangular section curving tape springs
会议论文
OAI收割
Proceedings of SPIE: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 2014
作者:
Du, Kai
;
Liao, Sheng
;
Li, Hua
;
Zhang, Yong
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2016/11/23
Study on ultra-light secondary baffle for coaxial two-mirror telescope (EI CONFERENCE)
会议论文
OAI收割
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
作者:
Zhang L.
;
Zhang L.
收藏
  |  
浏览/下载:44/0
  |  
提交时间:2013/03/25
The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope
the structure should have high stiffness and high reliability and light weight. Compared with invar
aluminum alloy and titanium alloy
carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper
optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm
total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages
such as ultra-light weight
high stiffness and dimensional stability
etc. The optimization method and the baffle design can be helpful to other coaxial telescopes
such as Cassegrain
Gregorian and their subdivisions. 2012 IEEE.
Analysis to stray radiation of infrared detecting system
会议论文
OAI收割
international symposium on photoelectronic detection and imaging 2011: advances in infrared imaging and applications, beijing, china, may 24, 2011 - may 24, 2011
NiuJin-Xing
;
ShiShuheng
;
ZhouRen-Kui
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2012/07/09
infrared detecting system
stray radiation
thermal emission
TracePro
Modeling of ammonothermal growth processes of GaN crystal in large-size pressure systems
会议论文
OAI收割
2nd International Solvothermal and Hydrothermal-Association Conference (ISHA 2010), Beijing, PEOPLES R CHINA, JUL 27-29, 2010
作者:
Chen QS(陈启生)
;
Jiang YN(姜燕妮)
;
Li W(李炜)
;
Yan JY(颜君毅)
;
Jiang YN(姜燕妮)
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2012/04/01
GaN
Ammonothermal growth
Baffle opening
Fluid flow
Thermal fields
DEM simulations on the heat conduction in a particle mixer
会议论文
OAI收割
Taiyuan, Shanxi, China, June 22, 2012 - June 24, 2012
作者:
Xu, Yupeng
;
Cui, Lijie
;
Ren, Xinxin
;
Ge, Wei
;
Lin, Weigang
  |  
收藏
  |  
浏览/下载:0/0
  |  
提交时间:2023/06/16
Mixers (machinery) - Heat conduction - Manufacture