中国光学, 2014, 7 (4): 631, 网络出版: 2014-08-18
超长焦距红外双视场光学系统设计
Design of infrared optical system with super-long focal length and dual field-of-view
超长焦距 中波红外 双视场光学系统 二次成像 super-long focal length mid-wave infrared optical system with dual field-of-view re-imaging
摘要
设计了一种超长焦距中波红外双视场光学系统,该系统采用二次成像结构,通过透镜轴向移动实现变焦功能。设计结果表明,该系统可以实现超长焦距600~150mm的变焦功能,且中心视场在探测器特征频率201p/mm处的光学传递函数值高于0.5,接近衍射极限,能够很好地满足**侦察对远距离目标同时搜索和瞄准的要求。
Abstract
A mid-wavelength infrared optical system with super-long focal length and dual field-of-view is designed in this paper. Based on the re-image configuration, this system can realize the zoom by axial motion of a lens along the optical axis. The design results show that this system realizes the zoom with a super-long focal length of 600-1 500 mm, and the MTF of the central view is more than 0.5 at the characteristic frequency of 20 lp/mm of detector, which shows its optical performance approximates to the diffraction limit. This system can meet the requirement of military investigation for seeking and aiming at target in a long distance.
白玉琢, 木锐, 马琳, 贾钰超, 普群雁, 薛经纬. 超长焦距红外双视场光学系统设计[J]. 中国光学, 2014, 7(4): 631. BAI Yu-zhuo, MU Rui, MA Lin, JIA Yu-chao, PU Qun-yan, XUE Jing-wei. Design of infrared optical system with super-long focal length and dual field-of-view[J]. Chinese Optics, 2014, 7(4): 631.