Patent ID: 8780449

Claim:
A method for compensating an aberration of a variable focus liquid lens, wherein, in step S 1 , the liquid lens has a selected diameter, a lens thickness, and a refractive index of a liquid filled into the liquid lens, the method being applied to compensate the aberration produced by a first lens surface and a second lens surface of the liquid lens according to the aforesaid requirements, the method comprising: S 2 : selecting one of the lens magnifying powers which is produced according to the diameter, the lens thickness, and the refractive index, and obtaining a plurality of combinations of radii of curvature corresponding to the lens magnifying power selected, wherein each combination of radii of curvature corresponds to the first lens surface and the second lens surface; S 3 : calculating spherical aberration corresponding to each combination of radii of curvature according to the obtained combinations of radii of curvature; S 4 : selecting a least spherical aberration from the spherical aberrations to obtain the combination of radii of curvature corresponding to the least spherical aberration, so as to generate a curvature radius ratio of the first lens surface and the second lens surface according to the combination of radii of curvature corresponding to the least spherical aberration; S 5 : selecting another one of the lens power-magnifying, and, obtaining a plurality of combinations of radii of curvature corresponding to the lens magnifying power selected, repeating the steps S 2 through S 5 until the curvature radius ratios corresponding to all the lens magnifying powers of the variable focus liquid lens respectively are obtained, and obtaining an average curvature radius ratio of the variable focus liquid lens based on the curvature radius ratios; S 6 : calculating a film deformation ratio or a film stiffness ratio according to the radius of curvature corresponding to the first lens surface and the second lens surface of the selected average curvature radius ratio, wherein the film deformation ratio or the film stiffness ratio is a thickness ratio; and S 7 : selecting a first film and a second film corresponding to the thickness ratio and using the selected first film and second film as the first lens surface and the second lens surface for compensating the aberration of the liquid lens, respectively.