▎ 摘　　要

NOVELTY - Varifocal lens comprises a transparent substrate (100) having a plate shape, a first lens layer (210) stacked on a first area formed on one surface of the transparent substrate, a second lens layer (230) stacked on a second area, which is spaced apart from the first area and formed on the one surface of the transparent substrate, and a power supply connected to the first lens layer and the second lens layer to, based on the second lens layer, applied a first voltage to the first lens layer, where the power supply adjusts the first voltage and changes a refractive index of light, which is incident on the other surface of the transparent substrate and transmitted toward the one surface of the transparent substrate, to adjust a focal length. USE - Varifocal lens for dividing lens layer into multiple areas and applying a different voltage to each of the divided areas to change a focal length. ADVANTAGE - The varifocal lens improves the low focusing efficiency due to graphene while easily controlling a focal length using a voltage has come to the fore, and capable of forming multiple focal lengths by using a single lens, and capable of increasing a refractive index change range, and also minimizes the size. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a varifocal lens. 100Transparent substrate 210First lens layer 220third lens layer 230Second lens layer 240Fourth lens layer