Studied On Optical And Mechanic System For Multispectral Camouflage Reconnaissance Detection Device

In the paper, the multispectral camouflage reconnaissance detection devicecomposed of visible detector, near infrared detector and ultraviolet detector, whichwas used for imaging on the same target so that some special equipment was detectedand analyzed in complex background. Based on the circumstance, optimal designingfor structure and errors analysis would be studied on the optical and mechanicalsystem, and according to review on research status, which would be studied at the firsttime. So the paper was focused on that.The entire content included three parts for the core problem in the paper:At first, the optical system was designed and optimized for the multispectralcamouflage reconnaissance detection device and original mechanical structure usedfor mounting the optimal system was designed by visible optical system, near infraredoptical system and ultraviolet optimal system. Based on thermodynamics andmechanic principle, thermal-structure finite element analysis coupled method wasfounded on the research topic. The mounting structure was optimized by the technicaltarget, which was finished on the multi-physical simulation software. The results wereshowed that the weight for the entire optical-mechanic structure was decreased to40%as the minimum wall structure gained, and the thermal load reached to75℃.Secondly, the structure errors influencing the imaging system were ascertained,which composed of designing, machining and assembly for the entire device system.For the optical system technical target and the principle of error transfer research, thecoordinate transform method was used for creating the entire errors model. And theerrors were assigned based on the precision of machining and assembly. The errors ofgyrus and perpendicularity were assigned, and then the errors of optical systems weredefined. Finally, the entire structure errors were assigned according to the repetitious calculation on the system errors.At last, the imaging examination for the multispectral camouflagereconnaissance detection device was finished, which composed of visible system, nearinfrared system and ultraviolet system. The numerical influence was ascertained bythe test results for the errors research on target imaging position following the varietytemperature.In summary, ability was been advanced for the multispectral camouflagereconnaissance detection device based on the research to optimal designing forstructure and errors analysis for the optical and mechanical system.