随着激光技术的迅速发展，激光**装备日益增多，广泛应用各个领域的光电成像系统被激光致盲或致眩的概率骤增，信息获取能力急剧下降，因此，光电成像系统激光防护技术研究变得越来越重要。简要介绍了基于线性材料和非线性材料的光电成像系统激光致盲防护技术的机理及局限，重点阐述了以二氧化钒为代表的基于相变材料的激光致盲防护技术的机理、制备方法和应用进展，详细分析了基于计算成像的激光致盲防护技术的机理和初步应用探索，结合激光致盲与致眩的关系补充说明了研究光电成像系统激光致眩防护技术的必要性和可行性，最后总结了光电成像系统各种激光防护技术的优缺点以及未来发展方向。

The development of laser systems leads to an increasing threat to photoelectric imaging sensors. A cubic phase plate wavefront coding imaging system is proposed to reduce the risk of damage owing to intense laser radiation. Based on the wavefront coding imaging model, the diffracted spot profile and the light intensity distribution on the observation plane are simulated. An experimental device is set up to measure the laser-induced damage thresholds and investigate the morphology of laser-induced damage patterns of the conventional and the wavefront encoding imaging system. Simulations and experimental results manifest the superior laser suppression performance of the proposed method, which can help diminish the undesirable effects of laser irradiation on an imaging sensor.

The generation of an autofocusing circular Airy beam (CAB) is realized via a liquid crystal (LC) geometric phase plate with a simple configuration. The fabrication of the LC plate is based on the photoalignment technology and dynamic exposure skill. A focal length of 74 cm is obtained, and the propagation dynamics are consistent with the simulations. Besides, a defocusing CAB is also generated, and the switch between the autofocusing and defocusing CABs can be achieved by controlling the input polarization state. This work provides a convenient and flexible approach to acquire CABs, which will promote the CAB-related applications and researches.