一种改善直耦增强数码相机静态成像时间响应特性的方法

王雪梅; 曹峰梅; 崔志刚

doi:doi:10.3788/gzxb20144305.0504003

光子学报, 2014, 43 (5): 0504003, 网络出版: 2014-06-03

一种改善直耦增强数码相机静态成像时间响应特性的方法

Improvement of Time Response Characteristics of Direct Coupling-enhanced Digital Camera Static Imaging

论文大纲

王雪梅 ^1,*曹峰梅 ¹崔志刚 ²

作者单位

¹ 北京理工大学光电学院光电成像技术与系统教育部国家重点实验室, 北京 100081

² 北京利云技术开发公司, 北京 100191

摘要

理论上分析了CIDC1816型直耦增强数码相机在采集静态图像过程中像增强器阴极电压衰减时间对电子光学系统横向位移的影响.实验证明了阴极电压衰减时间会对荧光屏亮度衰减时间产生影响.提出了利用电子开关的高速响应特性来减小阴极电压衰减时间，以改善该类型相机时间响应特性的方法.研究表明，当外界光照条件大于10－4 lx时，阴极电压衰减时间由80～130 ms减小到50~60 ns，电子光学系统的横向位移受阴极电压衰减特性的影响减小，荧光屏亮度衰减时间由12～26 ms减小到了3～4 ms.研究结果证明了该方法能够有效地减小像增强器阴极电压衰减时间和荧光屏亮度衰减时间，为提高该类型相机静态成像质量提供参考.

Abstract

When CIDC1816 direct coupling-enhanced digital camera was collecting still images, the effects of image intensifier cathode voltage decay time on the electron-optical systems were analyzed in theory, and it was proved that cathode voltage decay time also had impact on screen brightness decay time. A method was proposed using the high-speed response characteristics of electronic switches to reduce cathode voltage decay time and improve this kind of digital camera time response characteristics. Using this method during the period of collecting still images, the results show that image intensifier cathode voltage decay time was reduced from 80~130 ms to 50~60 ns, the impact on the electron-optical systems by cathode voltage decay time was reduced, and the screen brightness decay time was reduced from 12~26 ms to 3~4 ms, when the outside light conditions was greater than 10－4 lx. The results prove that this method can effectively reduce the image intensifier cathode voltage decay time and screen brightness decay time and be used as reference scheme for improving this kind of camera still-picture quality.

参考文献

[1] 崔志刚. 像管直耦增强数码相机: 中国, 201120302203.8［P］. 2012-08-22.

[2] 郭晖，向世明，田民强. 微光夜视技术发展动态评述［J］. 红外技术, 2013, 35(2): 63-68.

GUO Hui, XIANG Shi-ming, TIAN Min-qiang. A review of the development of low-light night vision technology［J］. Infrared Technology, 2013, 35(2): 63-68.

[3] 邹永星, 周仁魁, 杨松龄. 微光夜视技术发展动态评述［J］. 红外技术, 2005, 27(6): 446-448.

ZOU Yong-xing, ZHOU Ren-kui, YANG Song-ling. Study of night vision instrument at low light level based on gen II+ image intensifier［J］. Infrared Technology, 2005, 27(6): 446-448.

[4] 李晓峰. 超二代像增强器多碱阴极光电发射特性研究［J］. 光子学报, 2013, 42(1): 7-12.

LI Xiao-feng. Photoemission process study of multi-alkali photocathode in the super second generation image intensifier［J］. Acta Photonica Sinica, 2013, 42(1): 7-12.

[5] 李晓峰, 杨文波, 王俊, 等. 用光致荧光研究多碱光阴极光电发射机理［J］. 光子学报, 2012, 41(12): 1435-1440.

LI Xiao-feng, YANG Wen-bo, WANG Jun, et al. Photoemission mechanism of multi-i-alkali photocathode by photoluminescence［J］. Acta Photonica Sinica, 2012, 41(12): 1435-1440.

[6] 崔东旭，郑少成，邱亚峰, 等. 电子清刷对微通道板增益及输出信噪比的影响［J］. 光子学报, 2012, 41(8): 962-966.

CUI Dong-xu, ZHENG Shao-cheng, QIU Ya-feng, et al. Effect of electron rinse on output snr and electron gain of the microchannel plates［J］. Acta Photonica Sinica, 2012, 41(8): 962-966.

[7] 阴浩, 刘广荣, 金伟其等. 像增强型ＣＣＤ成像系统的分辨力分析［J］. 光子学报, 2012, 39(S1): 96-100.

YIN Hao, LIU Guang-rong, JIN Wei-qi, et al. Analysis of the resolving power of ICCD system［J］. Acta Photonica Sinica, 2012, 39(S1): 96-100.

[8] 白晓红, 刘进元, 白永林等. 高效透明导电膜荧光屏的研究［J］. 光子学报, 2006, 35(2): 176-179.

BAI Xiao-hong, LIU Jin-yuan, BAI Yong-lin, et al. Study of the phosphor screen with the transparent conducting film［J］. Acta Photonica Sinica, 2006, 35(2): 176-179.

[9] 王吉晖, 金伟其, 王霞. 基于最小可分辨对比度的直视微光夜视系统综合性能评价［J］. 兵工学报, 2010, 31(2): 184-190.

WANG Ji-hui, JIN Wei-qi, WANG Xia. General performance evaluation for direct viewing low light level imaging systems based on minimum resolvable contrast［J］. Acta Armamentarii, 2010, 31(2): 184-190.

[10] 拜晓锋, 苏俊宏, 石峰等. 照度对测量三代微光像增强器MTF的影响分析［J］. 应用光学, 2010, 31(2): 297-300.

BAI Xiao-feng, SU Jun-hong, SHI Feng, et al. Illumination effect on MTF of 3rd generation low-light-level image intensifier［J］. Journal of Applied Optics, 2010, 31(2): 297-300.

[11] 崔志刚. 具有微光成像或紫外成像功能的数码相机及其制造方法: 中国, 200810171998［P］. 2009-03-11.

[12] 白廷柱, 金伟其. 光电成像原理与技术［M］. 北京: 北京理工大学出版社, 2006.

[13] 邹异松, 刘玉凤, 白廷柱. 光电成像原理［M］. 北京: 北京理工大学出版社, 1997.

[14] 康华光. 电子技术基础数字部分［M］. 北京: 高等教育出版社, 2009.

[15] Maxim Integrated Products. MAX338-MAX339 Datasheets ［EB/OL］. (2012-07-03) ［2013-07-11］. http://datasheets. maxim integrated.com/en/ds/MAX338-MAX339.pdf.

王雪梅, 曹峰梅, 崔志刚. 一种改善直耦增强数码相机静态成像时间响应特性的方法[J]. 光子学报, 2014, 43(5): 0504003. WANG Xue-mei, CAO Feng-mei, CUI Zhi-gang. Improvement of Time Response Characteristics of Direct Coupling-enhanced Digital Camera Static Imaging[J]. ACTA PHOTONICA SINICA, 2014, 43(5): 0504003.

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