Research on properties of commonly-used phosphors for low-level-light image intensifiers

Table 1. Measurement results for luminous efficiency
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Table 1. Measurement results for luminous efficiency
编号屏号发光效率/（lm/W）均值/（lm/W）
P20 1 15.4 15.45
2 15.2
3 15.7
4 15.5
P22 1 18.9 18.85
2 18.8
3 19
4 18.7
P31 1 9.6 9.8
2 9.8
3 10
4 9.9
P43 1 13.4 13.2
2 13.2
3 13
4 13.2
P45 1 8 7.8
2 7.5
3 7.8
4 7.9

Table 2. Measurement results for resolution of fluorescent screen
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Table 2. Measurement results for resolution of fluorescent screen
编号分辨力/(lp/mm) 编号分辨力/(lp/mm)
P20-1 92.2 P20-2 92.4
P22-1 94.8 P22-2 94.4
P31-1 94.6 P31-2 94.4
P43-1 95.8 P43-2 96.2
P45-1 94.4 P45-2 94.6

Table 3. Measurement results for resolution of bare pipe of image intensifier
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Table 3. Measurement results for resolution of bare pipe of image intensifier
编号分辨力/(lp/mm) 编号分辨力/(lp/mm)
P20-1 57 P20-2 58
P22-1 60 P22-2 59
P31-1 58 P31-2 57
P43-1 67 P43-2 65
P45-1 61 P45-2 61

Table 4. Measurement results for spectral characteristics of phosphor

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Table 4. Measurement results for spectral characteristics of phosphor

编号	发光亮度L	色阶坐标		主波长/nm	峰值波长/nm	半波宽/nm	显色指数Ra	D10	D50	D90
编号	发光亮度L	x	y	主波长/nm	峰值波长/nm	半波宽/nm	显色指数Ra	D10	D50	D90
P20	73.311	0.3404	0.5928	555.7	539.1	85.9	23.2	1.38	2.45	4.25
P22	89.191	0.2996	0.6192	548.3	534.8	75.9	15.8	1.36	2.32	3.92
P31	70.565	0.2837	0.6062	544.4	530.1	74.7	19.7	1.33	2.5	4.47
P43	114.11	0.3462	0.5887	556.6	544.1	2.9	23.9	1.14	1.93	3.27
P45	53.582	0.3774	0.6159	560.7	544.2	2.9	2	1.47	2.68	4.77

Table 5. Key indicators of phosphor used for image intensifier

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Table 5. Key indicators of phosphor used for image intensifier

项目	P20	P22	P31	P43	P45	备注
荧光屏发光效率/（lm/W）	15.45	18.85	9.8	13.2	7.8	制成荧光屏后测试
分辨力/（lp/mm）	92	94	94	95	94	制成荧光屏后测试
发光颜色	黄绿	黄绿（绿）	黄绿（绿）	黄绿	白色
发光亮度/（cd/m²）	73.311	89.191	70.565	114.11	53.582
色阶坐标 $\frac{x}{y}$	$\frac{0.3404}{0.5928}$	$\frac{0.2996}{0.6192}$	$\frac{0.2837}{0.6062}$	$\frac{0.3462}{0.5887}$	$\frac{0.3774}{0.6159}$
主波长/nm	555.7	548.3	544.4	556.6	560.7
峰值波长/nm	539.1	534.8	530.1	544.1	544.2
半波宽/nm	85.9	75.9	74.7	2.9	2.9
显色指数Ra	23.2	15.8	19.7	23.9	2
荧光寿命/ms	0.62	0.66	0.57	0.60	1.34
中心粒径/μm	2.45	2.32	2.5	1.93	2.68
余辉/ms	0.6	8	0.1	1.2	1.7	《光电子成像器件原理》^[25]
像管分辨力/（lp/mm）	≥57	≥60	≥57	≥65	≥61	制成像管后测试

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Wuli YANG, Yueying LAI, Xiaohui ZHANG, Gangcheng JIAO, Shilong LI, Xin GUO, Tiantian JIA. Research on properties of commonly-used phosphors for low-level-light image intensifiers[J]. Journal of Applied Optics, 2022, 43(6): 1207

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