中国光学2012，Vol.5Issue(4)：373-379,7.
离轴三反测绘相机调焦机构的设计
Design of focusing mechanism for off-axis TMA mapping cameras
摘要
Abstract
Based on the requirements of mapping cameras for imaging quality and the stability of inner orientation elements,the characteristics of three focusing strategies are analyzed in detail,and the strategy which is most suitable for the mapping cameras is confirmed.A ball screw driving linear-guide-type focusing mechanism is designed,and its focusing sensitivity is calculated to be 0.2 μm.Precision testing and test validation are performed,which shows that the pointing accuracy of the focusing mechanism is superior to 2″ and the positioning accuracy of the focusing mechanism is better than 3 μm.Test results demonstrate that the designed focusing mechanism has the characteristics of compact structure,high stiffness and high displacement precision and it can meet the focusing requirements of off-axis TMA mapping cameras.关键词
离轴三反测绘相机/调焦机构/调焦精度/光学设计Key words
off-axis Three Mirror Anastigmat(TMA) mapping camera/focusing mechanism/focusing accuracy/optical design分类
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邵明东,郭疆,孙继明..离轴三反测绘相机调焦机构的设计[J].中国光学,2012,5(4):373-379,7.基金项目
国家自然科学基金资助项目 （）
