Supplement Number 1

The supplementary material for details of the numerical simulation method of achromatic metalens, the comparison of chromatic metalens, polarization insensitivity analysis, focusing performance, design principles of the multi-wavelength bi-focal metalens, the particle swarm algorithm and the simulation model.本补充材料涵盖了消色差超构透镜（achromatic metalens）数值仿真方法的细节、有色差超构透镜（chromatic metalens）的性能对比、偏振不敏感特性分析、聚焦性能、多波长双焦点超构透镜（multi-wavelength bi-focal metalens）的设计原理、粒子群算法（particle swarm algorithm）以及仿真模型的相关内容。