• CN:11-2187/TH
  • ISSN:0577-6686

›› 2012, Vol. 48 ›› Issue (14): 11-16.

• 论文 • 上一篇    下一篇


王平; 张国玉;高玉军;撖芃芃;李明   

  1. 长春理工大学光电工程学院;中国科学院长春光学精密机械与物理研究所
  • 发布日期:2012-07-20

Optics and Machine Design of Visible Light and Infrared Dual Spectral Aerial Reconnaissance Camera

WANG Ping;ZHANG Guoyu;GAO Yujun;HAN Pengpeng;LI Ming   

  1. School of Photo-electronic Engineering, Changchun University of Science and Technology Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences
  • Published:2012-07-20

摘要: 为满足高分辨率昼夜凌空侦察和中低空战术昼夜侦察需要设计灵巧型双波段航空侦察相机,该相机的研制为发展新型机载光电侦察设备提供技术储备。根据目标在不同光谱波段下的光学特征设计可见、红外双波段光学成像系统,全视场传递函数达0.5以上。基于SiC材料反射镜设计一种叶片式柔性支撑结构,该结构能够较好的保证反射镜的面形精度,仿真结果显示反射镜在重力载荷和热载荷叠加的情况下面形精度优于12 nm。针对目前航空相机主支撑结构难于同时保证质量小且刚度高的问题,采用NX/Narsrtan软件对相机主支撑结构进行优化设计,优化结果使相机框架结构一阶固有频率提高15 Hz,质量减小10%。通过环境试验、动态成像试验及分辨率检测试验验证设计结果的正确性。相机切实可行的光机设计有效地保证整个系统的性能指标都能满足设计要求。

关键词: 航空相机, 可见光, 双波段, 优化设计, 中波红外

Abstract: In order to meet the needs of high resolution and medium altitude tactics for circadian air reconnaissance, the smart dual spectral aerial reconnaissance camera is designed. The design of this camera will provide the technical reserve for the development of new airborne opto-electronic reconnaissance equipment. According to the optical characteristics of the target in different spectral bands to design the visible light and infrared dual spectral optical imaging system, the full field transfer function is more than 0.5. Based on the SiC material reflector to design a vane type flexible supporting structure, this structure can better ensure the reflector form accuracy. The simulation results show that the form accuracy of the reflector in the context of gravity load and thermal load superposition is better than 12 nm. In view of the problem that the main support structure of aerial camera can be difficult to ensure the light weight and high rigidity at the same time, the optimization design are exerted on the main support structure of camera with NX / Narsrtan software. The optimization results make the first-order nature frequency of the camera frame structure increase 15 Hz and weight reduce 10%. Finally, through the environmental test, dynamic imaging test and resolution test verify the accuracy of the obtained results. The feasible opto-mechanical design of camera ensures the performance index of the whole system can satisfy the requirement efficiently.

Key words: Mid-wave infrared, Aerial camera, Dual spectral, Optimization design, Visible light