Lei LI, Zebin WANG, Qingyu MENG, Dong WANG, Haixin ZHANG, Meichen LIU. Design of active-passive protection system for space cameras against strong light interference[J]. Infrared and Laser Engineering, 2025, 54(2): 20240501
- Infrared and Laser Engineering
- Vol. 54, Issue 2, 20240501 (2025)
Fig. 1. Normalized spectral curve
Fig. 2. Schematic diagram of the protection system
Fig. 3. Distribution of grayscale values. (a) Laser spot; (b) Background light
Fig. 4. Distribution of laser spot grayscale values after removing background light
Fig. 5. Curve of interference area with incident laser energy density under different F -numbers
Fig. 6. Transmittance vs wavelength curve of notch filter
Fig. 7. Desktop experimental system
Fig. 8. Condition of camera under 20 mW laser irradiation. (a) Imaging effect; (b) Grayscale value distribution
Fig. 9. Condition of camera under 40 mW laser irradiation. (a) Imaging effect; (b) Grayscale value distribution
Fig. 10. Effect of active protection measures. (a) Shutter opening; (b) Shutter closing
Fig. 11. Condition of the camera under 20 mW laser irradiation with notch filter. (a) Imaging effect; (b) Grayscale value distribution
Fig. 12. Condition of the camera under 50 mW laser irradiation with notch filter. (a) Imaging effect; (b) Grayscale value distribution
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Table 1. Performance of He-Ne laser
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Table 2. Specifications of mechanical shutter
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