CAJ | 학술논문

设计了工作在8~12μm波段的非致冷红外连续变焦光学系统。该系统由4组元5片透镜组成，其中前固定组、变倍组和补偿组均只有1片透镜，后固定组为两片。焦距50~200mm，相对孔径较大，为1∶1。设计过程中编写了适用于二组元变焦系统的ZEMAX宏程序，该程序可给出凸轮曲线的数据和形状，同时使像面位置不受限于高斯光学关系，能够满足某些焦距位置离焦的要求。系统在空间频率为20lp/mm处，各个视场的MTF值均在0.4以上。
설계료공작재8~12μm파단적비치랭홍외련속변초광학계통。해계통유4조원5편투경조성，기중전고정조、변배조화보상조균지유1편투경，후고정조위량편。초거50~200mm，상대공경교대，위1∶1。설계과정중편사료괄용우이조원변초계통적ZEMAX굉정서，해정서가급출철륜곡선적수거화형상，동시사상면위치불수한우고사광학관계，능구만족모사초거위치리초적요구。계통재공간빈솔위20lp/mm처，각개시장적MTF치균재0.4이상。
A high-speed uncooled infrared zoom optical system in the spectrum 8-12μm region is designed.The system is a simple structure with four parts and five pieces lens; the rear fixed unit is composed of two lenses, the rest are only one lens.The effective focal length ranges from 50mm to 200mm.The relative aperture is 1∶1. The zoom cam curve shape and data are given by zpl which is can be applied to two-ariable-unit zoom system, in this way the re-quirement of defocus was satisfied at some focal length.Image quality evaluation result shows that the MTF is higher than 0.4 in all field of view at the spatial frequency 20 lp/mm.