Study and test of thermal-defocusing property in space camera

	Study and test of thermal-defocusing property in space camera
	Kong, L. and L. Yang
	2017
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号	25 期号:7
摘要	In order to improve the image quality of space camera in different temperature fields, a integrated analysis model of structure-thermal-optical performance (STOP) model was established. According to the model, the thermal-defocusing property of the system was studied and test, and focusing curve of camera temperature was obtained. Then, thermo-optical experiment was developed. Firstly, influence of temperature changes on optical system, especially influence on optimal image plane position, was analyzed to obtain relationship of defocusing amount and optical element parameters; then, general method of STOP integrated analysis was introduced. In this method, temperature field of thermal analysis was as boundary condition of structural analysis by mapping, and a thermo-elastic performance of finite element model was analyzed. Then, temperature-defocusing sensitivity matrix of sensitive factors was obtained by fitting the curvature of optical elements and rigid body displacement in deformation result. On the basis of above, Temperature-focusing curve of camera was obtained. Finally thermo-optical test of camera was carried out. Experimental result indicates that maximum error of temperature focusing based on integrated analysis result is less than 0.1 mm in 208. The results basically satisfy camera requirements of on-orbit automatic focusing and method of further increasing camera precision of temperature focusing is pointed out. 2017, Science Press. All right reserved.
收录类别	ei
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/58975
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Kong, L. and L. Yang. Study and test of thermal-defocusing property in space camera[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2017,25(7).
APA	Kong, L. and L. Yang.(2017).Study and test of thermal-defocusing property in space camera.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,25(7).
MLA	Kong, L. and L. Yang."Study and test of thermal-defocusing property in space camera".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 25.7(2017).

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