Imaging Distortion Analysis and Testing of Short Magnetic Focusing Image Converter Tube

Jiayu Chen; Houzhi Cai; Yanli Bai; Yubo Liao; Wenyong Fu; Quanliang Guo; Jinyuan Liu

doi:10.3788/LOP55.031101

Laser & Optoelectronics Progress, Volume. 55, Issue 3, 031101(2018)

Imaging Distortion Analysis and Testing of Short Magnetic Focusing Image Converter Tube

Jiayu Chen^1、*, Houzhi Cai¹, Yanli Bai^1,2, Yubo Liao¹, Wenyong Fu¹, Quanliang Guo¹, and Jinyuan Liu¹

¹ Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, Guangdong 518060, China

² Department of Experiential Practice, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China

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Fig. 1. Dimensional drawing of simulated single-lens magnetic focusing image converter tube

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Fig. 2. Dimensional drawing of simulated double-lens magnetic focusing image converter tube

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Fig. 3. Spatial resolution at different off-axis positions

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Fig. 4. Electron landing coordinate in single-lens system imaging at 6 mm

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Fig. 5. Electron landing coordinate in double-lens system imaging at 6 mm

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Fig. 6. Basic structure of magnetic focusing image converter tube

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Fig. 7. Simulation and experimental results of imaging magnetic field in single-lens system

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Fig. 8. Simulation and experimental results of imaging magnetic field in double-lens system

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Fig. 9. Imaging results of (a) single-lens and (b) double-lens systems

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Fig. 10. Image distortion rates of single-lens and double-lens systems

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Table 1. Image distortion rate at different off-axis positions
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Table 1. Image distortion rate at different off-axis positions
Type of lens η' /%
6 mm 8 mm 10 mm 12 mm 14 mm
Single-lens 1.4 3.4 5.9 7.5 8.6
Double-lens 1.0 1.5 1.8 2.5 4.2

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Jiayu Chen, Houzhi Cai, Yanli Bai, Yubo Liao, Wenyong Fu, Quanliang Guo, Jinyuan Liu. Imaging Distortion Analysis and Testing of Short Magnetic Focusing Image Converter Tube[J]. Laser & Optoelectronics Progress, 2018, 55(3): 031101

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