The traditional spherical lens is not only thick, but also distorted and deformed when looking at things through the periphery of the lens, which is called aberration. The deformation of the facial contour can also be clearly found by observing the wearer through the spherical lens. Aspheric lens not only reduces the thickness of the center and edge of the lens, makes the lens thinner, eliminates peripheral aberration and gives the wearer natural vision For consumers with high vision, it may be more appropriate to choose aspheric lenses.
Compared with aspherical surfaces, aspherical lenses of the same material and degree are smoother, thinner, more realistic, more natural and comfortable. If the lens coating shape is viewed against the lamp tube, the lamp tube reflected by the aspheric lens is generally straight (except for the high diopter lens); Due to the different curvature of each part of the surface of the spherical lens, the shape curvature of the lamp tube is large.