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

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.