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Research on selection of high intensity laser beam expanding system 会议论文
Kunming, China, 2021-12-07
作者:  Gao, Na;  Zhang, XiangHui;  Liu, Jie;  Shen, ZeYi;  Xin, Wei
收藏  |  浏览/下载：19/0  |  提交时间：2022/04/27
Design of control system for atmospheric dispersion correctors based on UMAC 会议论文
Beijing, China, 2021-7（23-25）
作者:  Xu J(徐进);  Kou SF(寇松峰);  Le ZY(乐中宇);  Gu BZ(顾伯忠);  Yang SH(杨世海)
收藏  |  浏览/下载：15/0  |  提交时间：2022/04/01
Fabrication and optical transmission characteristics of polymers woodpile photonic crystal structures with different crystal planes 会议论文
Beijing, China, May 5, 2015 - May 7, 2015
作者:  Chen, Ling-Jing;  Dong, Xian-Zi;  Zhao, Yuan-Yuan;  Zhang, Yong-Liang;  Liu, Jie
收藏  |  浏览/下载：16/0  |  提交时间：2018/03/16
Effect of gimbal point displacement on optical axis pointing precision in an image seeker (EI CONFERENCE) 会议论文
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Zhang X.; Jiang Z.; Wei Q.; Jia H.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
A concentric glass spherical dome was usually chosen as the transparent window mounted in front of the optical lens in an image seeker. However  optical ray had to change its direction when propagating through the dome due to refraction unless passing through the center of the dome  which demanded gimbal point coincide with the center of the dome exactly. In fact  gimbal point displacement could not be eliminating due to fabrication  assembly and vibration  therefore the optical axis pointing error generated. In this paper  the effect of gimbal point displacement on optical axis pointing precision in an image seeker was analyzed  and the theoretical expression of the optical axis pointing error was derived based on geometric optics  and the error dynamics was explored by numerical. Take a visible light image seeker as a case  the thickness of concentric glass spherical dome was 8mm and the inner radius was 72mm  and the optical axis pointing errors varying dynamically with the look angle and the gimbal point displacement were shown in graph. When the gimbal displacement was 0.11mm  the maximum optical axis pointing error was 0.054mrad that is equal to the instantaneous field of view (IFOV) corresponding to the camera system whose focal length was 120mm and pixel size was 6.5m. Furthermore  with the gimbal displacement increasing  the optical axis pointing error increased linearly. The analyzed results provided a theoretical basis for the displacement range  which had to be limited strictly in the gimbal design process. 2011 IEEE.  
衍射增强成像相位信息的非线性提取方法研究 会议论文
第十四届全国核电子学与核探测技术学术年会, CNKI
陈志强; 丁飞; 黄志峰; 张丽; 朱佩平; Zhi-Qiang Chen; Fei Ding; Zhi-Feng Huang; Li Zhang; Zhu Peiping
收藏  |  浏览/下载：1/0  |  提交时间：2017/06/15
衍射增强成像相位信息的非线性提取方法研究 会议论文
第十四届全国核电子学与核探测技术学术年会, CNKI
陈志强; 丁飞; 黄志峰; 张丽; 朱佩平; Zhi-Qiang Chen; Fei Ding; Zhi-Feng Huang; Li Zhang; Zhu Peiping
收藏  |  浏览/下载：3/0  |  提交时间：2017/06/15
Extraction methods of phase information for X-ray diffraction enhanced imaging 会议论文
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 11th Symposium on Rediation Measurements and Applications, Ann Arbor, MI, Web of Science
Huang, Zhifeng; Kang, Kejun; Yang, Yigang
收藏  |  浏览/下载：4/0
Design of compound Fresnel-R lenses for new high-efficient photovoltaic concentrator (EI CONFERENCE) 会议论文
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII, August 1, 2010 - August 4, 2010, San Diego, CA, United states
Jing L.; Liu H.; Lu Z.; Zhao H.
收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25
A new design of compound Fresnel-R concentrator is presented which is composed of two lenses: a primary lens (Fresnel lens) that works by total internal reflection at outer facets but refraction at inner facets  and a secondary lens that works by refraction. In contrast to previous Fresnel lens concentrator  this design increases the acceptance angle  improves the irradiance uniformity on the solar cell  and reduces the aspect ratio significantly. Another outstanding advantage of this concentrator is the fact that it mainly works by performing total internal reflection  reducing chromatic dependence as well as Fresnel losses. An optical efficiency more than 80% can be achieved. Moreover  in order to reduce the influence of manufacture accuracy and to increase the optical efficiency further  the central part of the bottom of the secondary lens which directly adhered to the solar cell is designed as a cone-shaped prism to collect the sunlight that doesn't reach the solar cell. 2010 SPIE.  
Determination of zero incident angle by optical feedback effect and its applications in the measurement of refractive indices (EI收录) 会议论文
Proceedings of SPIE - The International Society for Optical Engineering, Shanghai, China, October 19, 2009 - October 22, 2009
作者:  Zhang, Xiao-Kang[1];  Li, Run-Hua[1]
收藏  |  浏览/下载：1/0  |  提交时间：2019/04/17

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