Thermal control design and analysis of a zoom TV optical mechanical system | |
Zhang, Yue1; Shi, Kui1; Wang, Huan1; Zhang, Gaopeng1,2; Qu, Rui1,3; Zhang, Zhi1; Gao, Bo1 | |
2019 | |
会议名称 | 3rd International Conference on Photonics and Optical Engineering |
会议录名称 | Third International Conference on Photonics and Optical Engineering |
卷号 | 11052 |
会议日期 | 2018-12-05 |
会议地点 | Xi'an, China |
出版者 | SPIE |
产权排序 | 1 |
摘要 | In view of whether the optical system of a focal length 14?360mm continuous zoom TV can obtain high quality and high reliability images in high and low temperature environment, especially in extreme low temperature environment. The thermal design of zoom TV optical-mechanical system using passive thermal control and active thermal control is proposed. The passive thermal control uses polyimide as insulation material to increase the thermal resistance between the camera interior and the outside. Active thermal control uses electric heating film to dynamically heat the key parts of the camera lens. Under the condition of low temperature, the finite element method is used to establish the heat transfer model of the whole lens assembly in the workbench finite element software, and analyze the heat load composition, including the heating power load, the heat convection load and the heat radiation load, and carry on the steady state thermal analysis. Through thermodynamic analysis and experimental verification, the consistency of focal plane of zoom camera optical system is good after taking active thermal control measures at the extreme low temperature of-45°C. The optical transfer function (OTF) of zoom lens at cut-off frequency (100lp/mm) is 0.25 higher than that before thermal design, which can meet the requirements of thermal control design with better transfer function distribution and higher imaging quality. The correctness of the simulation results and the rationality of the optical-mechanical design are verified. ? 2019 SPIE. |
作者部门 | 飞行器光学成像与测量技术研究室 |
DOI | 10.1117/12.2521772 |
收录类别 | EI ; CPCI |
ISBN号 | 9781510627796 |
语种 | 英语 |
ISSN号 | 0277786X;1996771X |
WOS记录号 | WOS:000464740100022 |
EI入藏号 | 20190806535043 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/31287 |
专题 | 飞行器光学成像与测量技术研究室 |
作者单位 | 1.Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; 2.Xi'An Jiaotong University, Xi'an; 710049, China; 3.University of Chinese Academy of Sciences, Beijing; 100049, China |
推荐引用方式 GB/T 7714 | Zhang, Yue,Shi, Kui,Wang, Huan,et al. Thermal control design and analysis of a zoom TV optical mechanical system[C]:SPIE,2019. |
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