Spherical lens VS Aspherical lens
Spherical lens VS Aspherical lens
When the eye sees something through the center and periphery of the spherical lens, the light from the center and periphery cannot focus the image on one point, causing the image to be refracted and distorted, which affects the clarity of the field of view.
The design of aspherical lenses can improve these phenomena. It changes the surface curvature of the lens so that the light from the center and the edges are concentrated at the same point, and the field of view becomes clearer.
The curvature of the aspherical lens varies from center to edge. Because the curvature is changed, the edge of the aspherical lens will be thinner, which provide a better wearing experience.
bi-Aspherical Lens
Asphericial lens can greatly improve the optical quality. To further improve the imaging and edge thickness, top brands have developed the bi-aspherical lens, which can provide a better wearing experience.
Reduce appearance impact on high power lens
