摘要
为使某航天设备上所搭载的小型空间(TOF)相机在宽温度工作范围以及复杂动力学环境下能够较好成像,对空间TOF相机大视场光学镜头开展了优化设计。首先,根据镜头的设计指标要求采用近远心光路设计了光学系统,并对系统进行了分析;然后通过对比材料性能,选取铸钛合金(ZTC4)作为镜头支撑结构材料;并探讨了镜座在加工前、后的加工工艺;随后利用有限元参数化优化和自适应响应面优化算法对镜头关键部件之一的镜筒(壁厚)进行了优化设计。优化后镜筒的质量由75 g减少至51.2 g,减重率达到31.7%;最后对整机进行了过载适应性分析、温度适应性分析和模态分析,并进行了相关测试试验。分析和试验结果表明:该空间TOF相机的各项光机结构性能均满足设计指标要求。
The small space time-of-flight(TOF)camera mounted on a certain aerospace device needs to perform imaging in a wide temperature operating range and the complex dynamic environment.To achieve better images,an optimized design of the large-field optical lens of the space TOF camera is carried out.First,according to the lens design index requirements,the optical system is designed and analyzed by using the near-telecentric optical path.Then,by comparing the material properties,the cast titanium alloy(ZTC4)is selected as the lens support structure material.The processing technic of the lens holder is discussed before and after processing.Thirdly,the lens barrel(wall thickness)which is one of the key components of the lens is optimized by using the finite element parametric optimization method and the adaptive response surface optimization algorithm.After the optimization,the quality of the lens barrel is reduced from 75 g to 51.2 g,and the weight loss rate reaches 31.7%.Finally,the overload adaptability analysis,temperature adaptability analysis and modal analysis are implemented for the entire camera.Related test experiments are carried out.The analysis and test results show that all the optomechanical structures and performances of this space TOF camera meet the design index requirements.
作者
魏加立
曲慧东
王永宪
朱俊青
关英俊
Wei Jiali;Qu Huidong;Wang Yongxian;Zhu Junqing;Guan Yingjun(School of Mechatronic Engineering,Changchun University of Technology,Changchun 130012,china;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2020年第10期121-128,共8页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(11803036,11873007)
中央引导地方科技发展基金(202002035JC)项目资助
关键词
空间TOF相机
大视场光学镜头
近远心光路
优化设计
有限元分析
space TOF camera
large field of view optical lens
near far optical path
optimized design
finite element ana
