超透镜的进展：从单个到阵列
メタレンズの進歩：単一からアレイへ
메탈렌즈의 진보: 단일에서 배열로
Avances en metalentes: de un solo a arreglos
Progress in metalenses: from single to array
Прогресс в металленах: от единичных к массивным
Chang Peng 彭畅 ¹, Jin Yao 姚金 ¹, Din Ping Tsai 蔡定平 ¹ ² ³ ⁴
¹ Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
中国 香港 香港城市大学电机工程学系
² Department of Physics, City University of Hong Kong, Kowloon, Hong Kong 999077, China
中国 香港 香港城市大学物理学系
³ Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong 999077, China
中国 香港 香港城市大学生物系统、神经科学和纳米技术研究中心
⁴ The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong 999077, China
中国 香港 香港城市大学太赫兹及毫米波全国重点实验室
As one of the most promising branches of metasurfaces, metalenses overcome the functional limits of conventional lenses and enable versatile control over light. Their compactness facilitates integration into miniaturized optical systems without significantly increasing the footprint.
Recent advances in the field are unfolding along two parallel directions: performance enhancement and functional expansion of single metalenses, and architectural development of multi-metalens systems. In this review, we systematically summarize representative progress in both areas, aiming to clarify major unresolved challenges and highlight the most promising directions for future exploration.
