▎ 摘　　要

NOVELTY - The system has a first incident light whose polarization state is orthogonal to the polarization state of a second incident light. A first focal length interval represents the interval formed by the minimum and maximum focal lengths of the zoom metalens for the first incident light before and after the phase transition of a nanostructure (2). The second focal length interval represents the interval formed by the minimum and maximum focal lengths of the zoom metalens for the second incident light before and after the phase transition of the nanostructure. The material of a substrate (1) is provided with quartz glass, fused quartz, crown glass, flint glass or sapphire. The material of an electrode layer (3) is provided with indium tin oxide glass material, graphene material or transparent conductive ion glue material. The material of the nanostructure is provided with antimony trisulfide, germanium antimony tellurium or vanadium dioxide. USE - Zoom super lens. ADVANTAGE - The method locks the nanostructure at each position on the zoom metalens more concisely, and quickly and accurately generates a zoom metalens with the large zoom range. The refractive index variation range of the designed zoom lens is determined by the phase change material used by the predetermined nanostructure, the target phase distribution of the two endpoints in the refractive-index variation range is respectively based on the incident light of two different polarization states. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a design method of zoom lens. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the modulation effect diagram of the zoom metalens. (Drawing includes non-English language text) 1Substrate 2Nano structure 3Electrode layer