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23 September 2015 Research and design for focusing device of secondary mirror
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The position of optical plane for a space remote sensing instrument will be changed in severe launching process and complex working thermal environments, which affects the imaging quality of the remote sensing instrument seriously. based on traditional R-C optical systems designed a new type of initiative thermal controlling focusing device, which was driver by the change of thermal according to the basic concepts of thermal expansion properties, the apparatus selectively adjusting the position of the secondary mirror to compensate for the amount of defocus, analysis the main factors of affecting the accuracy of focusing device, and using finite element analysis software for simulation data, while the device for the corresponding experimental verification according to the actual working environment .The results showed that the focusing device designed to meet the required shaking volume requirement 15."
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WeiYan Li, DanDan Zhang, QunBo Lv, YangYang Liu, LinLin Pei, and JianWei Wang "Research and design for focusing device of secondary mirror", Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96262N (23 September 2015);

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