Wavefront coded light-field imaging system to achieve substantial retroreflection reduction and anti-laser blinding property

被引:10
作者
Wang, Lei [1 ]
Dou, Xianan [1 ]
Ye, Qing [1 ]
Nie, Jinsong [1 ]
Sun, Xiaoquan [1 ]
机构
[1] State Key Lab Pulsed Power Laser Technol China, 460 Huangshan Rd, Hefei 230037, Anhui, Peoples R China
来源
OPTIK | 2019年 / 192卷
关键词
Imaging system; Retroreflection reduction; Wavefront coding; Light-field imaging; Laser interference and blinding; DEPTH;
D O I
10.1016/j.ijleo.2019.162947
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
To achieve a substantial retroreflection reduction accompanied with a superior anti-laser blinding property without suffering significant degradations in imaging quality, we design a novel imaging system based on the wavefront coded light-field rendering. Relevant studies have been carried out around its mechanism in both anti-laser reconnaissance and blinding. According to the Fresnel-Kirchhoff diffraction theory, the laser propagation through the composite imaging system is theoretically modeled. By comparison among the conventional, the wavefront coding, the light-field, and the composite imaging systems with different defocus parameters and phase modulation coefficients, the spot profiles and intensity distributions on both the imaging and observation planes are further studied, according to which the optimization principle is proposed. The results show that compared with the conventional one, the composite imaging system could not only increase the interference and blinding thresholds by nearly one order of magnitude but also attenuate the retroreflection peak intensity and the echo-detector receiving power by even more than one order of magnitude, achieving the superior properties of anti-laser reconnaissance and blinding.
引用
收藏
页数:8
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