Fig. 1. Schematic diagram of metalens

Fig. 2. Relationship of radius of nano-pillar with phase delay and transmittance

Fig. 3. Design principle for metalens

Fig. 4. Radius of metalens elements at different positions

Fig. 5. Focus property of metalens

Fig. 6. Schematic diagram for compressing layout file of metalens

Fig. 7. Central part of layout design of metalens generated by compression algorithm