微光像增强器常用荧光粉性能研究  

Research on properties of commonly-used phosphors for low-level-light image intensifiers

作　　者：杨武丽 来悦颖 张晓辉 焦岗成 李世龙 郭欣 贾甜甜 YANG Wuli;LAI Yueying;ZHANG Xiaohui;JIAO Gangcheng;LI Shilong;GUO Xin;JIA Tiantian(Science and Technology on Low-Light-Level Night Vision Laboratory,Xi'an 710065,China;Kunming Institute of Physics,Kunming 650223,China)

机构地区：[1]微光夜视技术重点实验室,陕西西安710065 [2]昆明物理研究所,云南昆明650223

出　　处：《应用光学》2022年第6期1207-1216,共10页Journal of Applied Optics

基　　金：国防基础科研项目(JCKY2018208B016)。

摘　　要：荧光粉是微光像增强器荧光屏的关键材料,可将电子图像转换为可见光学图像,其性能对像增强器的分辨力、发光光谱、调制传递函数、余辉等性能有重要影响。针对国内外目前像增强器的发展情况,就国内外像增强器荧光屏常用的P20((Zn,Cd)S∶Ag)、P22(ZnS∶Cu,Al)、P31(ZnS∶Cu)、P43(Gd_(2)O_(2)S∶Tb)和P45(Y_(2)O_(2)S∶Tb)开展相应的性能对比研究,分别对这5种荧光粉的物相结构、光谱特性、发光效率及分辨力等性能进行了表征,分析了不同种类荧光粉的适用条件。结果表明:这5类常用荧光粉对于像增强器的不同性能提升各有贡献,其中分辨力较高的为P43荧光粉,发光效率较高的为P22荧光粉,而人眼观测舒适度最好的则为P45荧光粉。鉴于对微光像增强器高性能的要求,在选用微光像增强器用荧光粉时可选用综合性能较为优越的P22和P43荧光粉,也可根据像增强器的具体性能要求及实际使用需求选用合适的荧光粉种类。The phosphors is the key material of the fluorescent screen of low-level-light image intensifier,which can transform the electronic images into the visible optical images.Its performances have an important influence on the resolution,luminescence spectrum,modulation transfer function and afterglow of the image intensifier.In view of the current development of image intensifier at home and abroad,a comparative performance study was carried out on the commonly-used P20((Zn,Cd)S:Ag),P22(ZnS:Cu,Al),P31(ZnS:Cu),P43(Gd_(2)O_(2)S:Tb)and P45(Y_(2)O_(2)S:Tb)for fluorescent screen of image intensifier.The phase structure,spectral characteristics,luminous efficiency and resolution of these five types of phosphors were characterized respectively,and the applicable conditions of different kinds of phosphors were analyzed.The results show that these five types of commonly-used phosphors contribute to the improvement of different performances of image intensifier.Among which,the P43 phosphors has higher resolution,the P22 phosphors has higher luminous efficiency,and the P45 phosphors provides the best observation comfort for the human eyes.In view of the requirements for the high performance of the low-level-light image intensifier,the P22 and the P43 phosphors with superior comprehensive performance can be selected when selecting phosphors for the lowlevel-light image intensifier,and the appropriate types of phosphors can also be selected according to the specific performance requirements and actual use requirements of image intensifier.

关 键 词：微光像增强器 荧光屏 荧光粉 光学特性 

分 类 号：TN206[电子电信—物理电子学]