超二代微光像增强器性能随工作时间的影响研究  

Study on the Influence of Performance with the Working Time in the Super Gen-II Image Intensifier

作　　者：曾进能 杨琼连 龚燕妮 李廷涛[1] 王乙瑾 李晓露 赵恒 马怀超 徐传平 吴艳娟 汪云 李耀斌 须恃瑜 刘倍宏 徐鳕娇 李荣喜 ZENG Jinneng;YANG Qionglian;GONG Yanni;LI Tingtao;WANG Yijin;LI Xiaolu;ZHAO Heng;MA Huaichao;XU Chuanping;WU Yanjuan;WANG Yun;LI Yaobing;XU Shiyu;LIU Beihong;XU Xuejiao;LI Rongxi(North Night Vision Technology Co.Ltd,Kunming 650217,China;Science and Technology on Low-light-level Night Vision Laboratory,Xi’an 710065,China)

机构地区：[1]北方夜视技术股份有限公司,云南昆明650217 [2]微光夜视技术重点实验室,陕西西安710065

出　　处：《红外技术》2023年第8期869-875,共7页Infrared Technology

摘　　要：研究了超二代微光像增强器性能随工作时间的变化规律,掌握性能变化特点。通过性能测试和曲线拟合,得出亮度增益、信噪比随工作时间的变化逐渐下降,分辨力随工作时间的变化几乎保持不变。其中,亮度增益与工作时间呈指数函数变化,即当超二代微光像增强器在10000h的工作时间内,亮度增益随工作时间的变化速率较快,但随着工作时间增加,亮度增益下降速率变慢,且最终趋于平稳。信噪比随工作时间呈多项式函数变化,且随着工作时间的增加信噪比逐渐下降。将长时间工作的微光像增强器进行解剖分析后,其亮度增益、信噪比变化主要与光电阴极灵敏度、荧光屏发光效率和微通道板增益稳定性息息相关,且相比灵敏度和荧光屏发光效率而言,微通道板增益的稳定性变化较大。The variation law of the performance with working time in the super Gen-II image intensifier was studied,and the characteristics of the performance variation were grasped.Through performance testing and curve fitting,it was found that the brightness gain and signal-to-noise ratio gradually decrease with working time,and the resolution remains almost unchanged with the change of working time.In addition,the brightness gain changes exponentially with working time.That is,when the working time is within 10,000 h of the super Gen-II image intensifier,the brightness gain changes rapidly with the working time;however,as the working time increases,the brightness gain decreases and finally stabilizes.The signal-to-noise ratio changes as a polynomial function with working time and finally stabilizes.The signal-to-noise ratio changes as a polynomial function with working time and gradually decreases with working time.Through anatomical analysis of the image intensifier after working for a long time,its brightness gain and signal-to-noise ratio changes were found to be mainly related to the sensitivity of the photocathode,luminous efficiency of the phosphor screen,and gain stability of the MCP.Compared with the sensitivity and luminous efficiency of the fluorescent screen,the MCP gain stability changed significantly.

关 键 词：超二代微光像增强器 工作寿命 亮度增益 信噪比 分辨力 MCP增益 

分 类 号：O462.3[理学—电子物理学]