Method for compensating for aberration of a variable focus liquid lens

A method for compensating for aberration of a variable focus liquid lens is configured to compensate for aberration associated with a first lens surface and a second lens surface of the liquid lens. The first lens surface is of a first radius of curvature. The second lens surface is of a second radius of curvature. The method includes: step S1 of selecting a diameter of the variable focus liquid lens, a thickness thereof, and a refractive index of a filling liquid; step S2 of setting at least one of a plurality of magnifying powers of the lenses according to conditions thus selected, followed by determining a plurality of combinations of radii of curvature corresponding to the magnifying powers of the lenses; step S3 of obtaining from the combinations of radii of curvature a plurality of spherical aberrations corresponding thereto; step S4 of identifying the spherical aberration of the least value, followed by obtaining the combinations of radii of curvature corresponding to the least spherical aberration so