高性能近贴式像增强器的调制传递函数分析  

The MTF Analysis of High Performance Proximity Image Intensifier

作　　者：陶禹[1] 金伟其[1,2] 王瑶[1] 石峰 郭宏[1] 

机构地区：[1]北京理工大学光电学院,光电成像技术与系统教育部重点实验室,北京100081 [2]微光夜视技术重点实验室,西安710065

出　　处：《光子学报》2016年第6期162-167,共6页Acta Photonica Sinica

基　　金：总装十二五重点预研计划(No.40405050302);微光夜视技术重点实验室基金(No.BJ2014003)资助~~

摘　　要：为了提升微光夜视系统中高性能近贴式像增强器极限分辨力,在归纳近贴式像增强器及其部件调制传递函数模型的基础上,结合高性能超二代和超三代像增强器的结构和电参量以及典型产品性能值,研究分析了像增强器及其部件调制传递函数分布特性参数,及它们对像增强器极限分辨力和综合评价参量-信道宽度的影响.研究结果表明:进一步提升像增强器性能需要提升荧光屏的性能或改善调制传递函数分布特征;信道宽度参量可作为评价像增强器调制传递函数曲线分布特征的有效参量.研究结论对于进一步提升高性能像增强器的性能具有理论指导意义.In order to improve the performance of high performance image intensifier in low-light-level night vision systems,the modulation transfer function models of the proximity image intensifier and its parts were summarized,and the structures and electrical parameters of the Super Gen.II and Super Gen.III image intensifiers were reviewed.The image intensifier and its modulation transfer function distribution were studied respectively,further their impact on the resolution limit as well as the channel width of the image intensifier was investigated.The results show that the performance of the screen and the modulation transfer function distribution should be improved to further improve the performance of the image intensifier,channel width can be an effective parameter to evaluate the modulation transfer function distribution of the image intensifier.The results have theoretical significance for the development of high performance image intensifiers.

关 键 词：近贴式像增强器 调制传递函数 荧光屏 分辨力 信道宽度 

分 类 号：TN223[电子电信—物理电子学]