超二代像增强器分辨力提高方法

李廷涛; 龚燕妮; 曾进能; 常乐; 赵恒; 谭何盛; 褚祝军; 陈超; 周善堃; 李晓峰

超二代像增强器分辨力提高方法

李廷涛^{1, 2,},
龚燕妮¹,
曾进能¹,
常乐¹,
赵恒¹,
谭何盛¹,
褚祝军¹,
陈超¹,
周善堃¹,
李晓峰^1, ,

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

基金项目:

国家自然科学基金 11535014

详细信息

作者简介:
李廷涛（1985-），男，工程师，主要研究方向：真空光电器件。E-mail：195968739@qq.com

通讯作者:
李晓峰（1963-），男，正高级工程师，博士，主要研究方向：真空光电器件。E-mail：984118295@qq.com

中图分类号: O462.3
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- 文章访问数: 488
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- 被引次数: 0
出版历程
- 收稿日期: 2021-04-13
- 修回日期: 2021-09-02
- 刊出日期: 2023-04-20

Methods for Resolution Improvement of Super Ⅱ Image Intensifier

1.
North Night Vision Technology Co. Ltd., Kunming 650217, China
2.
Science and Technology on Low-light-level Night Vision Laboratory, Xi'an 710065, China

摘要

摘要: 为进一步提高超二代像增强器分辨力，分析了阴极输入窗、多碱光电阴极、微通道板、荧光屏等对超二代像增强器分辨力的影响，提出了减小阴极近贴距离、减小微通道板通道孔径、减小光纤面板输出窗丝径以及对微通道板镀制防电子弥散膜来提高分辨力的方法，并通过实验得到了验证。实验结果表明，随着阴极近贴距离的不断减小，分辨力可以得到逐步提高。阴极近贴距离为0.08 mm的条件下，缩小光纤面板输出窗的丝径，缩小微通道板的孔径，且在微通道板的输出面镀制防电子弥散膜，可以使超二代像增强器的分辨力达到72 lp/mm，最高可达到76 lp/mm，比原有超二代像增强器的分辨力提高了33.33%。
- 像增强器 /
- 分辨力 /
- 荧光屏 /
- 光纤面板 /
- 微通道板
Abstract: To improve the resolution of the super Ⅱ image intensifier, factors such as the cathode input window, multialkali photocathode, microchannel plate (MCP), and phosphor screen were analyzed. The resolution was increased by reducing the cathode proximity distance, channel diameter of the MCP, and fiber size of the fiber optic faceplate and by depositing an anti-electronic dispersion film onto the output face of the MCP. These methods were verified experimentally. By continuously decreasing the cathode proximity distance continuously, the resolution can be gradually increased. On the condition that the cathode proximity distance is 0.08 mm, when the fiber size of the fiber optic faceplate and channel diameter of the MCP are reduced, with the deposition of a coated anti-electronic dispersion film on the output side of the MCP, a resolution of 72 lp/mm can be achieved, even reaching a maximum of 76 lp/mm. Thus, the resolution is improved by 33.33%.
- image intensifier /
- resolution /
- phosphor screen /
- fiber optic faceplate /
- microchannel plate

HTML全文

图 1 超二代像增强器结构示意图

Figure 1. Structure of a super Ⅱ image intensifier

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图 2 微通道板输出电子示意图

Figure 2. Schematic diagram of output electrode of MCP

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图 3 微通道板输出电极镀膜示意图

Figure 3. Schematic diagram of output electrode with coated film

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图 4 分辨力与阴极近贴距离关系

Figure 4. The relationship between cathode proximity distance and resolution of image intensifier

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表 1 超二代像增强器阴极近贴距离及分辨力测试数据（距离理论值为0.15 mm）

Table 1. The test values of cathode proximity distance and resolution of super Ⅱ image intensifiers (the distance theoretical value is 0.15 mm)

Sample	Distance theoretical value	Distance of test position 1/mm	Distance of test position 2/mm	Distance of test position 3/mm	Average value of distance/mm	Resolution/ (lp/mm)
4117#	0.15	0.155	0.145	0.147	0.149	57
4393#		0.150	0.168	0.152	0.157	57
4387#		0.149	0.148	0.145	0.147	57
4287#		0.160	0.142	0.150	0.151	57

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表 2 超二代像增强器阴极近贴距离及分辨力测试数据（距离理论值为0.12 mm）

Table 2. The test values of cathode proximity distance and resolution of super Ⅱ image intensifiers (the distance theoretical value is 0.12 mm)

Sample	Distance theoretical value	Distance of test position 1/mm	Distance of test position 2/mm	Distance of test position 3/mm	Average value of distance/mm	Resolution/ (lp/mm)
4075#	0.12	0.125	0.107	0.138	0.123	60
4279#		0.118	0.131	0.132	0.127	60
4383#		0.135	0.128	0.113	0.125	60
4726#		0.102	0.113	0.155	0.123	60

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表 3 超二代像增强器阴极近贴距离及分辨力测试数据（距离理论值为0.08 mm）

Table 3. The test values of cathode proximity distance and resolution of super Ⅱ image intensifiers (the distance theoretical value is 0.08 mm)

Sample	Distance theoretical value	Distance of test position 1/mm	Distance of test position 2/mm	Distance of test position 3/mm	Average value of distance/mm	Resolution/(lp/mm)
7035#	0.08	0.082	0.075	0.084	0.080	64
7011#		0.087	0.077	0.078	0.081	64
7050#		0.088	0.077	0.080	0.082	64
7068#		0.080	0.090	0.080	0.083	64

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表 4 不同丝径光纤面板的超二代像增强器分辨力测试数据

Table 4. Resolution of different fiber optic plate of the super Ⅱ image intensifiers

Sample	Fiber diameter of fiber optic plate/μm	Average value of distance/mm	Resolution/(lp/mm)
7035#	6	0.080	64
7011#	6	0.081	64
7050#	6	0.082	64
7068#	6	0.083	64
7034#	4	0.085	68
7013#	4	0.085	68
7032#	4	0.085	68
7003#	4	0.086	68

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表 5 不同微通道板状态下超二代像增强器分辨力测试数据

Table 5. Resolution of the super Ⅱ image intensifiers with different features microchannel plate

Sample	Fiber diameter of fiber optic plate/μm	Channel diameter of microchannel plate/μm	Microchannel plate output anti dispersion film	Average value of distance/mm	Resolution/(lp/mm）
7034#	4	6	without	0.085	68
7013#	4	6	without	0.085	68
7032#	4	6	without	0.085	68
7003#	4	6	without	0.086	68
7038#	4	5	with	0.080	72
7025#	4	5	with	0.082	72
7026#	4	5	with	0.082	72
7036#	4	5	with	0.083	72

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表 6 实验前后超二代像增强器分辨力测试数据

Table 6. Resolution of the super Ⅱ image intensifiers before and after the experiment

Sample	Fiber diameter of fiber optic plate/μm	Channel diameter of microchannel plate/μm	Microchannel plate output anti dispersion film	Average value of distance/mm	Resolution/(lp/mm)
4117#	6	6	without	0.149	57
4393#	6	6	without	0.157	57
4387#	6	6	without	0.147	57
4287#	6	6	without	0.151	57
7022#	4	5	with	0.080	76
7023#	4	5	with	0.079	76
7066#	4	5	with	0.077	76
7045#	4	5	with	0.076	76

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参考文献(14)

[1]	向世明. 双近贴聚焦微光像增强器分辨力理论极限问题研究[J]. 应用光学, 2008, 29(3): 351-353. https://www.cnki.com.cn/Article/CJFDTOTAL-YYGX200803007.htm XIANG Shiming. Study on the theoretical limit of resolution of double proximity focusing low-light-level image intensifier[J]. Journal of Applied Optics, 2008, 29(3): 351-353. https://www.cnki.com.cn/Article/CJFDTOTAL-YYGX200803007.htm
[2]	赵恒, 常乐, 李廷涛, 等. 多碱光电阴极激活技术研究[J]. 红外技术, 2018, 40(7): 695-700. http://hwjs.nvir.cn/article/id/hwjs201807013 ZHAO Heng, CHANG Le, LI Tingtao, et al. Study on Cs-O activation technology of multi-alkali photocathode[J]. Infrared Technology, 2018, 40(7): 695-700. http://hwjs.nvir.cn/article/id/hwjs201807013
[3]	Shymanska A. Numerical analysis of electron optical system with microchannel plate[J]. Journal of Computational Electronics, 2011, 10(3): 57-60.
[4]	陈楠, 乐务时, 龙高群, 等. 高分辨率微通道板制造技术[J]. 激光与光电子学进展, 2010, 47: 062201-1-062201-5. https://www.cnki.com.cn/Article/CJFDTOTAL-JGDJ201006019.htm CHEN Nan, LE Wushi, LONG Gaoqun, et al. Manufacture technology of microchannel plate with high resolution[J]. Laser & Optoelectronics Progress, 2010, 47: 062201-1-062201-5. https://www.cnki.com.cn/Article/CJFDTOTAL-JGDJ201006019.htm
[5]	曾进能, 李廷涛, 常乐, 等. MCP输入增强膜对像增强器主要性能的影响研究[J]. 红外技术, 2020, 42(8): 735-741. http://hwjs.nvir.cn/article/id/hwjs202008005 ZENG Jinneng, LI Tingtao, CHANG Le, et al. Effect of MCP input enhancement film on image intensifier performance[J]. Infrared Technology, 2020, 42(8): 735-741. http://hwjs.nvir.cn/article/id/hwjs202008005
[6]	Bosch Leon A. Image intensifiers tube performance is what matters[C] //Proceedings of SPIE International Symposium on Optical Science and Technology, 2000, 4128: 65-78.
[7]	李晓峰, 常乐, 曾进能, 等. 微通道板分辨力提高研究[J]. 光子学报, 2019, 48(12): 1223002. https://www.cnki.com.cn/Article/CJFDTOTAL-GZXB201912016.htm LI Xiaofeng, CHANG Le, ZENG Jingneng, et al. Study on resolution improvement of microchannel plate[J]. Acta Photonica Sinica, 2019, 48(12): 1223002. https://www.cnki.com.cn/Article/CJFDTOTAL-GZXB201912016.htm
[8]	向世明, 倪国强. 光电子成像器件原理[M]. 北京: 国防工业出版社, 1999. XIANG Shiming, NI Guoqiang. The Principle of Photoelectronic Imaging Devices[M]. Beijing: National Defense Industry Press, 1999.
[9]	武梅娟, 任玲, 常本康, 等. 运用蒙特卡罗方法分析像增强器分辨率[J]. 真空科学与技术学报, 2012, 32(9): 798-801. https://www.cnki.com.cn/Article/CJFDTOTAL-ZKKX201209008.htm WU Meijuan, REN Ling, CHANG Benkang, et al. Simulation of image intensifier resolution in Monte Carlo method[J]. Chinese Journal of Vacuum Science and Technology, 2012, 32(9): 798-801. https://www.cnki.com.cn/Article/CJFDTOTAL-ZKKX201209008.htm
[10]	武梅娟. MCP端面电子反射对像增强器分辨力的影响[D]. 南京: 南京理工大学, 2012. WU Meijuan. Effect of MCP end electron reflection on resolution of image intensifier[D]. Nanjing: Nanjing University of Science and Technology, 2012.
[11]	史继芳, 杨斌, 韩占锁, 等. 基于双重模型的微光像增强器分辨力[J]. 光学精密工程, 2013, 21(9): 2260-2265. https://www.cnki.com.cn/Article/CJFDTOTAL-GXJM201309008.htm SHI Jifang, YANG Bin, HAN Zhansuo, et al. Objective evaluation for low-light-level image intensifier based on dual-model[J]. Optics and Precision Engineering, 2013, 21(9): 2260-2265. https://www.cnki.com.cn/Article/CJFDTOTAL-GXJM201309008.htm
[12]	宋克昌. 双近贴聚焦象增强器的MTF评价[J]. 高速影像与光子学, 1985, 14(3): 1-22. https://www.cnki.com.cn/Article/CJFDTOTAL-GZXB198503000.htm SONG Kechang. Evaluation of MTF of double proximity focused image intensifier[J]. Acta Photonica Sinica, 1985, 14(3): 1-22. https://www.cnki.com.cn/Article/CJFDTOTAL-GZXB198503000.htm
[13]	程耀进, 向世明, 师宏立. 三代微光像增强器分辨力计算理论模型[J]. 应用光学, 2007, 28(5): 578-581. https://www.cnki.com.cn/Article/CJFDTOTAL-YYGX200705015.htm CHENG Yaojin, XIANG Shiming, SHI Hongli. Theoretical model for resolution calculation of third generation image intensifiers[J]. Journal of Applied Optics, 2007, 28(5): 578-581. https://www.cnki.com.cn/Article/CJFDTOTAL-YYGX200705015.htm
[14]	程耀进, 石峰, 郭晖, 等. MCP参数对微光像增强器分辨力影响研究[J]. 应用光学, 2010, 31(2): 292-296. https://www.cnki.com.cn/Article/CJFDTOTAL-YYGX201002028.htm CHENG Yaojin, SHI Feng, GUO Hui, et al. Study on the influence of MCP parameters on the resolution of LLL image intensifier[J]. Journal of Applied Optics, 2010, 31(2): 292-296. https://www.cnki.com.cn/Article/CJFDTOTAL-YYGX201002028.htm