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    科学领域:

    • 光电学是指光电子产品.
    • 材料科学 材料科学 材料科学
    • 电磁学 电磁学 电磁学 电磁学

    背景情况:

    • 光学窗户对于电光系统至关重要,但电磁干扰 (EMI) 给性能带来了挑战.
    • 传统的金属网状窗户提供EMI屏蔽和透射能力,但受到衍射的影响,降低图像质量.
    • 现有的随机结构可以改善衍射,但缺乏全面的优化.

    研究的目的:

    • 开发一个创新的,多带光学窗口,增强EMI屏蔽和光学性能.
    • 克服传统周期性和随机金属网状结构的局限性.
    • 通过一种新的优化过程来减少衍射效应并改善光谱传导率.

    主要方法:

    • 在多带光学窗户设计中采用了一种新的优化过程.
    • 使用随机的金属网格结构来最大限度地减少高阶衍射.
    • 集成了9层ZnS/YbF3反射涂层,用于多频段性能.

    主要成果:

    • 与周期性网格相比,高阶衍射光学能量减少了74%.
    • 在12-18GHz频段实现了超过20dB的EMI屏蔽效率.
    • 获得的平均光学传输率为86.1% (0.4-0.7μm),89.8% (1.064μm) 和81.1% (3-5μm).

    结论:

    • 拟议的多带光学窗口有效地减轻了衍射,并增强了EMI屏蔽.
    • 优化的随机网格设计比传统的金属网格提供了更高的性能.
    • 预计这种创新的窗户设计将大大提高光学系统中EMI屏蔽的应用和有效性.