摘要
研究了光学镜筒的设计、加工和装配。从材料选取、结构形式确定和性能分析等方面论述了测绘相机光学镜筒的设计过程,探讨了透镜支撑结构-薄壁壳体的加工方法。最后,介绍了单镜组和主镜筒的装配过程。通过比较,选取铸钛合金ZTC4作为镜筒的材料,采用单镜组加筋壳结构的组合形式,运用PATRAN/NASTRAN软件对主镜筒的分析表明其结构强度和刚度很好,可满足相机结构要求。薄壁壳体通过精密铸造,再经过车削而成,各定位阶梯内圆柱面同轴度达到0.01 mm。镜筒装配要点是无变形安装固定透镜、精确控制空气间隔和高精度定心。装配完成的镜头光学传递函数达到0.43(77 lp/mm),满足测绘相机精度要求。
For purposes of designing a mapping camera with high image quality for stereoscopic mapping task, the design, manufacturing and assembly for the lens of a mapping camera are investigated. the design of the lens is issued from material choice, structure decision, performance analysis, and so on. Then, the processing methods for thin shell supporting structure of the lens are discussed. Finally, the assembly process of single lens unit and primary lens is introduced as well. After comparison, ZTC4 is selected as the material for lens tube, and a single lens unit and a thin shell are adopted to a combination format. Analysis results with PATRAN/NASTRAN indicate that the lens shows a good mechanical intensity and stiffness and can satisfy the requirement of structure of single lens. The thin shell is gained through casting and turning precisely, and the co-axiality of column in orientation ladders is 0.01 mm. During the assembly of lens, it is very important to keep no deformation, to control a air space accurately and to position a high precision center for assembly. The tested result shows that the optical transfer function of single lens can reach to 0.43（77 lp/mm）, which can meet the requirements of precision for a mapping camera.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2008年第9期1648-1653,共6页
Optics and Precision Engineering
基金
中国科学院“优秀博士学位论文、院长奖获得者科研启动专项基金”资助项目
关键词
测绘相机
光学镜筒
设计
加工
装配
mapping camera
optical lens
design
manufacturing
assembly
