Fig. 1. French SLD anti-sniper laser detection system

Fig. 2. MIRAGE portable dual-barrel detection system

Fig. 3. Schematic diagram of cat-eye effect

Fig. 4. Working principle of laser active detection system

Fig. 5. Physical model of cat-eye laser active detection system

Fig. 6. Laser detection and measurement system for experiment

Fig. 7. Laser jamming system and detection target for experiment

Fig. 8. Echo images and identification results of cat-eye of optical surveillance device

Fig. 9. Imaging effect of digital camera (analog public surveillance) by red laser jamming at different distances

Fig. 10. Imaging effect of mobile phone by 5 mW red laser jamming under different distances

Fig. 11. Imaging effect of digital DSLR camera by 5 mW green laser jamming under different distances

Fig. 12. Imaging effect of card DC under different power 808 nm near infrared laser irradiation

Fig. 13. Jamming effect of 5 mW green laser on card DC under different beam dispersion angles