离轴折反式长波红外变焦光学系统设计
发布时间：2018-12-21 16:08
【摘要】：随着科学技术的发展,被搜索跟踪的暗目标越来越多、距离越来越远、速度越来越快,大大增加了对目标的搜索跟踪及细致观察的难度,因此对红外探测跟踪系统提出了更高的要求。本文总结了国内外变焦光学系统的发展趋势,比较了几种红外变焦光学系统的优缺点,研究了变焦光学系统的理论。针对现有的红外变焦光学系统的不足,考虑了红外材料的局限性,采用离轴折反式设计了一个波段范围为8~12μm,焦距变化范围为200mm~2000mm,F数为4的长波红外变焦光学系统。为了保证加工的可行性,对系统进行了公差分析。设计结果表明,该系统在焦距范围内成像质量良好,系统传递函数在20lp/mm时均接近衍射极限,凸轮曲线平滑无拐点。该系统具有变焦时无遮拦、大变倍比、长焦距的特点,较好的满足了红外探测跟踪系统的需求。
[Abstract]:With the development of science and technology, the dark targets of the search and tracking are more and more, the distance is more and more distant, the speed is faster and faster, the search and tracking of the target and the difficulty of careful observation are greatly increased, and therefore, the infrared detection tracking system has higher requirements. In this paper, the development trend of the zoom optical system at home and abroad is summarized, the advantages and disadvantages of several kinds of infrared zoom optical systems are compared, and the theory of the zoom optical system is studied. Aiming at the defects of the existing infrared zoom optical system, the limitation of the infrared material is taken into account, and a long-wave infrared zoom optical system with the range of 8 to 12. m u.m in the range of 8 to 12. m In order to ensure the feasibility of the machining, the system is subjected to the tolerance analysis. The results show that the system has good imaging quality in the range of focal length, the transfer function of the system is close to the diffraction limit at 20lp/ mm, and the cam curve has no inflection point. The system has the characteristics of no blocking, large zoom ratio and long focal length in zooming, and better meets the requirement of the infrared detection and tracking system.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN215
，
本文编号：2389138
[Abstract]:With the development of science and technology, the dark targets of the search and tracking are more and more, the distance is more and more distant, the speed is faster and faster, the search and tracking of the target and the difficulty of careful observation are greatly increased, and therefore, the infrared detection tracking system has higher requirements. In this paper, the development trend of the zoom optical system at home and abroad is summarized, the advantages and disadvantages of several kinds of infrared zoom optical systems are compared, and the theory of the zoom optical system is studied. Aiming at the defects of the existing infrared zoom optical system, the limitation of the infrared material is taken into account, and a long-wave infrared zoom optical system with the range of 8 to 12. m u.m in the range of 8 to 12. m In order to ensure the feasibility of the machining, the system is subjected to the tolerance analysis. The results show that the system has good imaging quality in the range of focal length, the transfer function of the system is close to the diffraction limit at 20lp/ mm, and the cam curve has no inflection point. The system has the characteristics of no blocking, large zoom ratio and long focal length in zooming, and better meets the requirement of the infrared detection and tracking system.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN215
，
本文编号：2389138
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