More durable (with high impact force), lighter, and more compact flexible azo dye micropolarizers are attractive candidates for low-cost, simple polarization imaging systems. The liquid crystal polymer (LCP), as an emerging material developed by photo-alignment technology, is a potential material for organizing the long-range ordered structure of azo dyes. However, little research has been done on LCP aligned azo dyes. This paper points out and solves a key problem that restricts the fabrication of high-precision arrays in guest (azo dye)-host (LCP) systems: the doping of dyes leads to disorder of the LCP during curing. After solving the problem, the relationship between the thickness of the LCP and the extinction ratio of the polarizing film was investigated, which effectively improved the extinction ratio. Alignment of azo dye molecules in the range of 2 µm (0°–180°) and arrays of micropolarizers (0°, 45°, 90°, -45°) with 8 µm × 8 µm pixel pitch was achieved by laser direct writing technology. The bending cycle test demonstrates the mechanical stability of the ultrathin flexible polarizer. The flexible patterned polarizer with robust chemical and mechanical stabilities provides a flexible way to capture the polarization of the light and highly integrated advanced flexible optoelectronic devices.

作为分焦平面型偏振成像系统的核心光学器件，微偏振阵列（Micropolarizer Array，MPA）对场景目标偏振信息的重构有着重要影响。针对传统2×2 MPA存在的图像分辨率损失和瞬时视场误差等问题，以及现有模型仅能设计2×N系列MPA的局限性，基于傅里叶频域提出了一种可涵盖2×N系列和N×N对角系列MPA排布模式的设计模型，并优化设计了3种新型对角排布的MPA。通过理论分析、外场实验和数值模拟对已有的MPA及新设计的MPA的重构性能进行了定性分析与定量测试。实验结果表明：利用2×2×2 MPA重构的S₀，S₁，S₂及线偏振度图像在定量测试和视觉效果方面最优，而对于单探测器的快照式成像系统，新型3×3 MPA获得的重构效果最佳。本文改进模型的应用和新型MPA的提出可为多样化和高性能MPA的制备提供理论依据，促进了DoFP偏振成像系统的工程实际应用。