Fig. 1. Schematic block diagram of measuring device

Fig. 2. Physical picture of test system for halo disappearance time of low-level-light image intensifier

Fig. 3. Flow chart of test system for halo disappearance time of low-level-light image intensifier

Fig. 4. Halo image for 0.35 mm input light-spot collected by camera

Fig. 5. Schematic image of row scanning

Fig. 6. Schematic diagram with complete cycle

Fig. 7. Schematic diagram of halo grayscale change

Fig. 8. Schematic diagram of halo diameter under different illuminance

Fig. 9. Comparison diagram of 10 test results of two image intensifiers under 4 different illuminance