Xu Ping, Li Xiong-Chao, Xiao Yu-Fei, Yang Tuo, Zhang Xu-Lin, Huang Hai-Xuan, Wang Meng-Yu, Yuan Xia, Xu Hai-Dong. Design and research of long-infrared dual-wavelength confocal metalensJ. Acta Physica Sinica, 2023, 72(1): 014208. DOI: 10.7498/aps.72.20221752