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Abstract

A system and method designing a metalens including nanostructures and a spacer layer between the nanostructures. The method includes; selecting a design area in relation to a width of the nanostructure and a pitch of the nanostructure, setting a search route in the design area in a direction in which a phase decreases, calculating transmittance at a reference point on the search route and change points near the reference point along the search route, determining the width of the nanostructure and the pitch of the nanostructure, generating a phase map corresponding to the width of the nanostructure and the pitch of the nanostructure, extracting an extracted width of the nanostructure and an extracted pitch of the nanostructure having a target phase from the phase map, and placing the nanostructure having the extracted width and extracted pitch in relation to the metalens corresponding to the target phase.

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