自动门控像增强器温度补偿技术研究

李亚情; 左加宁; 李晓露; 周盛涛; 褚祝军; 杜培德; 王光凡

自动门控像增强器温度补偿技术研究

北方夜视技术股份有限公司, 云南昆明 650217

基金项目:

国家自然科学基金 11535014

详细信息

作者简介:
李亚情（1993-），女，云南人，硕士，工程师，主要从事微光夜视技术研究。E-mail：liyaqing1742@dingtalk.com

中图分类号: TN22
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- 文章访问数: 40
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- PDF下载量: 23
- 被引次数: 0
出版历程
- 收稿日期: 2023-01-29
- 修回日期: 2023-03-19
- 刊出日期: 2023-10-20

Research on Temperature Compensation of Image Intensifier Based on Auto-gated Power Supply

North Night Vision Technology Co. Ltd., Kunming 650217, China

摘要

摘要: 针对匹配自动门控电源的超二代像增强器高低温条件下亮度增益和最大输出亮度产生漂移的问题，分析了温度补偿原理，设计了温度补偿方案，通过实验确定了温度补偿系数，验证了该温度补偿方案的合理性。实验结果表明，低照条件（输入照度低于5×10^－4 lx），通过将MCP电压降低14.7 V能够将低温（－45℃）亮度增益从121%降低到105%以内，通过将MCP电压增加16.5 V能够将高温（55℃）亮度增益从77%提高到99%以上；高照条件（输入照度高于5×10^－4 lx），通过将阳极电流设定值降低14%能够将低温最大输出亮度从114%降低到104%以内，通过将阳极电流设定值增加12.6%能够将高温最大输出亮度从87%提高到91%以上。因此，采用本文所述温度补偿技术能够有效提高自动门控像增强器高低温条件下亮度增益和最大输出亮度的一致性。
- 像增强器 /
- 亮度增益 /
- 最大输出亮度 /
- 温度补偿 /
- 通道板电压 /
- 阳极电流
Abstract: The brightness gain and maximum output brightness of super gen Ⅱ auto-gated image intensifiers vary with temperature. Here, we analyzed the principles of temperature compensation and designed a temperature compensation scheme. The compensation coefficient was determined experimentally, and the rationality of the temperature-compensation scheme was verified using the data. The experimental results showed that the low temperature (-45℃) brightness gain can be reduced from 121% to 105% by reducing the MCP voltage by 14.7 V under low illumination conditions (input illumination is less than 5×10^-4 lx), and the high temperature (55℃) brightness gain can be increased from 77% to 99% by increasing the MCP voltage by 16.5 V. Under high illumination conditions (input illumination of more than 5×10^-4 lx), the maximum output brightness at low temperatures can be reduced from 114% to less than 104% by reducing the anode current setting value by 14%, and the maximum output brightness at high temperature can be increased from 87% to more than 91% by increasing the anode current setting value by 12.6%. Therefore, the temperature compensation technology described herein can effectively improve the consistency of the brightness gain and maximum output brightness of auto-gated image intensifiers under high- and low-temperature conditions.
- image intensifier /
- brightness gain /
- maximum output brightness /
- temperature compensation /
- voltage of MCP /
- anode current

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图 1 自动门控像增强器高低温输出亮度对比图

Figure 1. High and low temperature brightness characteristics comparison diagram of image intensifier based on auto-gated power supply

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图 2 自动门控像增强器高低温增益对比示意图

Figure 2. High and low temperature gain characteristics comparison diagram of image intensifier based on auto-gated power supply

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图 3 自动门控像增强器组成结构

Figure 3. Structure diagram of image intensifier based on auto-gated power supply

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表 1 自动门控电源高低温测试结果

Table 1. High and low temperature test results of auto-gated power supply

T/℃	J2202004			J2202009			J2202012
T/℃	V_c/V	V_mcp/V	V_a/kV	V_c/V	V_mcp/V	V_a/kV	V_c/V	V_mcp/V	V_a/kV
-45	-221	939	6.34	-219	941	6.33	-219	943	6.30
25	-219	939	6.32	-219	941	6.31	-219	943	6.30
55	-217	936	6.29	-215	940	6.28	-215	941	6.27

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表 2 像增强器温度补偿前测试结果

Table 2. Test results of image intensifier before temperature compensations

T/℃	3031#		1059#		1018#
T/℃	G/(cd/m²/lx)	I_l/nA	G/(cd/m²/lx)	I_l/nA	G/(cd/m²/lx)	I_l/nA
-45	15645	4.13	16432	4.02	16553	4.23
25	12800	3.65	13700	3.49	13800	3.74
55	9722	3.19	10600	3.01	10600	3.3

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表 3 像增强器温度补偿前后对比

Table 3. Contrast of image intensifier before and after temperature compensations

T/℃	3031#				1059#				1018#
	G/(cd/m²/lx)		MOB/(cd/m²)		G/(cd/m²/lx)		MOB/(cd/m²)		G/(cd/m²/lx)		MOB/(cd/m²)
	Before	After	Before	After	Before	After	Before	After	Before	After	Before	After
55	9722	12824	6.9	7.2	10600	13760	7.1	7.4	10600	13346	6.7	6.9
25	12800	12800	7.9	7.9	13700	13700	8.3	8.3	13800	13800	7.8	7.6
0	14298	13692	8.4	8.1	15558	14124	9.0	8.4	15054	14386	8.0	7.8
-25	15835	14223	8.4	8.2	16675	14638	9.5	8.5	16665	14888	8.3	7.8
-45	15645	14085	8.9	7.6	16432	14117	9.5	8.1	16553	14566	8.6	7.5

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