What does an aspherical lens mean?

An aspherical mirror is a lens whose surface is not spherical or cylindrical.

In photography, a lens containing an aspherical optical element. The surface curvature of aspheric lens is different from that of ordinary spherical lens. In order to pursue the thinness of the lens, it is necessary to change the curved surface of the lens. In the past, spherical design was adopted, which increased aberration and deformation.

Results There were obvious bad phenomena such as unclear images, distorted vision and narrow vision. Now the aspheric design corrects the image, solves the problem of visual distortion, and makes the lens lighter, thinner and flatter. But also maintains excellent impact resistance, so that the wearer can use it safely.

In the traditional spherical lens, the objects around the lens are distorted, which limits the wearer's field of vision. In the era of continuous technological progress, the aspheric design, an optical miracle, has minimized the lens edge aberration and made its wide field of vision meet the needs of customers.

The base curve of aspheric lens is flatter, lighter and looks more natural and beautiful. In the case of higher diopter, the deformation of eyes can be reduced. For consumers with high eyesight, it may be more suitable to choose aspherical lenses.