光子多普勒测速仪多目标点探头光学设计  

Optical Design of a Probe for Multipoints Photon Doppler Velocimetry

作　　者：吴慎将[1] 孙奕晗 荆宇强 朱星宇 马文珊 WU Shenjiang;SUN Yihan;JING Yuqiang;ZHU Xingyu;MA Wenshan(School of OptoElectronical Engineering,Xi’an Technological University,Xi’an 710021,Shaanxi)

机构地区：[1]西安工业大学光电工程学院,陕西西安710021

出　　处：《火箭军工程大学学报》2024年第5期81-87,118,共8页Journal of Rocket Force University of Engineering

基　　金：应用物理化学国家级重点实验室基金(WDYX21614260202)。

摘　　要：为了提升光子多普勒测速仪(Photon Doppler Velocimetry, PDV)对目标进行多点数的区域覆盖式或阵列式速度测量时的测量点数量,使用Zemax软件设计了像面直径10 mm的双远心光学系统,实现同时对平面靶5.6 mm范围内进行多点测速。该镜头由4片单透镜和4片双胶合透镜组成,工作波长为1 550 nm,工作物距为300 mm,系统总长250 mm,有效焦距500 mm,远心度小于0.01°,均方根半径在聚焦位置处最小为0.055μm,最大为0.920μm。均方根半径及全部弥散斑半径均在艾里斑范围内,调制传递函数曲线与衍射极限重合,线条平整,系统达到衍射极限。同时畸变小于0.025%,像差校正满足设计要求。In order to increase the number of measurement points of photon Doppler velocim-etry(PDV)in coverage or array velocity measurements of multipoints of the target,a double tel-ecentric optical system with an image plane diameter of 10 mm was designed by Zemax software.The proposed optical system could measure velocities of multipoints within 5.6 mm of a plane tar-get simultaneously.The lens consisting of four single lenses and four doublet lenses had a work-ing wavelength of 1550 nm,a working object distance of 300 mm,a total system length of 250 mm,an effective focal length of 500 mm,a telecentricity less than 0.01°and a root-mean-square(RMS)radius of 0.055μm at the minimum and 0.920μm at the maximum at the focus position.The RMS radius and radii of all defocused spots were within the range of Airy spots.Moreover,the modulation transfer function curves was flat and overlapped with the diffraction limit with flat lines,which indicated that the system has achieved the diffraction limit.Meanwhile,the aberra-tion was less than 0.025%,and the aberration correction met the design requirements.

关 键 词：光学设计 双远心镜头 远心度 像差校正 

分 类 号：U471[机械工程—车辆工程]