| Citation: |
NIU Jiaqi, ZHANG Rui, SHI Jin, ZHANG Zhuoqi, ZHANG Zixuan, WANG Zhibin, LI Mengwei. Laser warning technology based on binocular CMOS image sensor[J]. Journal of Applied Optics, 2024, 45(6): 1291-1297. DOI: 10.5768/JAO202445.0607002
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Aiming at the problems of low resolution of wavelength and angle, and low angle range of field of view of incoming laser measurement in two-dimensional laser alarm, a scheme of laser alarm using binocular image sensor was proposed. The optical system was mainly composed of grating, lens group and two COMS image sensors. Based on the grating diffraction principle, binocular detection was carried out to improve the angular resolution of measurement. The wavelength of the incoming laser was obtained by measuring the pixel distance of the diffraction spot of two adjacent levels on CMOS_1, and the two-dimensional direction angle of the incoming laser was obtained by measuring the center position of the spot of the incident laser in the CMOS_2 image sensor. The measurement feasibility was verified by experiments. The experimental results show that the improved wavelength resolution is better than 6 nm, the angle resolution is 0.1°, the angle of field is ±50°, and the accuracy of angle measurement is 0.1°.
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