基于复合超透镜实现的无畸变成像

郑菡雨; 杨帆; 林宏易; Mikhail Y. Shalaginov; 李兆熠; Padraic Burns; 古田; 胡崛隽

doi:10.1016/j.eng.2024.09.004

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工程（英文） ›› 2025, Vol. 45 ›› Issue (2) : 52-58. DOI: 10.1016/j.eng.2024.09.004

研究论文

Article

基于复合超透镜实现的无畸变成像

郑菡雨 ^a ,
杨帆 ^b ,
林宏易 ^a^,^b ,
Mikhail Y. Shalaginov ^a^,^b ,
李兆熠 ^a ,
Padraic Burns ^b ,
古田 ^a^,^b^,^c^,^* ,
胡崛隽 ^a^,^b^,^c^,^*

作者信息 +

Compound Metalens Enabling Distortion-Free Imaging

Hanyu Zheng ^a ,
Fan Yang ^b ,
Hung-I Lin ^a^,^b ,
Mikhail Y. Shalaginov ^a^,^b ,
Zhaoyi Li ^a ,
Padraic Burns ^b ,
Tian Gu ^a^,^b^,^c^,^* ,
Juejun Hu ^a^,^b^,^c^,^*

Author information +

History +

摘要

超表面透镜的出现已经影响了各种各样的应用领域，如光束操控、成像、深度感知和显示投影。然而，在许多光学设计的规格中，光学畸变作为一个重要指标，在超颖光学领域却很少被讨论。在此，我们提出了一种基于复合超表面透镜的通用设计思路，以实现按需调控成像畸变的目的。具体而言，我们展示了双层超表面结构所提供的额外自由度，以实现定制化的角度依赖像高关系，从而在最小化其他单色像差的同时实现畸变控制。利用这一平台，我们通过实验展示了一种复合鱼眼超表面透镜，其在140°的宽视场范围内具有衍射极限的性能，并且成像畸变低于2%，相比之下，未修正的单层超透镜成像畸变高达22%。本文提出的设计策略和复合超透镜架构可广泛影响消费电子、汽车和机器人传感、医学成像以及机器视觉等领域。

Abstract

The emergence of metalenses has impacted a wide variety of applications such as beam steering, imaging, depth sensing, and display projection. Optical distortion, an important metric among many optical design specifications, has however rarely been discussed in the context of meta-optics. Here, we present a generic approach for on-demand distortion engineering using compound metalenses. We show that the extra degrees of freedom afforded by a doublet metasurface architecture allow custom-tailored angle-dependent image height relations and hence distortion control while minimizing other monochromatic aberrations. Using this platform, we experimentally demonstrate a compound fisheye metalens with diffraction-limited performance across a wide field of view of 140° and a low barrel distortion of less than 2%, compared with up to 22% distortion in a reference metalens without compensation. The design strategy and compound metalens architecture presented herein are expected to broadly impact metasurface applications in consumer electronics, automotive and robotic sensing, medical imaging, and machine vision systems.

Keywords

Metasurface / Metalens / Wide field of view / Wavefront correction / Compound meta-optics

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郑菡雨, 杨帆, 林宏易. 基于复合超透镜实现的无畸变成像. Engineering. 2025, 45(2): 52-58 https://doi.org/10.1016/j.eng.2024.09.004

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