Do you know the knowledge of color-changing lenses? Follow the editor of 1.56 SF Mirror Photochromic Grey lens supplier china for a brief understanding.
A progressive color lens, comprising a base, a primer layer, a progressive film layer, a composite color change layer and a protective layer, the progressive film layer and the composite color change layer are located between the primer layer and the protective layer, and the progressive film layer It includes 3 layers of high refractive index film layers, and the progressive position ratio of the 3 layers of high refractive index film layers is different. The upper part of the progressive color lens reflects most of the strong light through the stack of high refractive index film layers to protect the eyes; the progressive film The color-changing layer and the composite color-changing layer show different colors under the interference of different refractive indices, which combines the visual function of the progressive lens with the color fashion of the color-changing lens and provides better products for the market.

The above is the 1.56 SF Mirror Photochromic Grey lens supplier china Xiaobian tells:A brief introduction to some knowledge about color-changing lenses.