How much do you know about single-sided photochromic lenses? The Best Finished Single Vision Photochromic Brown lens editor will take you to a brief look.

Single-sided photochromic lens. It includes a substrate layer, the upper surface of the substrate layer is sequentially provided with an upper hardened layer and a lower coating layer, and the lower surface of the substrate layer is sequentially provided with a lower hardened layer and a lower coating layer. A color-changing coating is applied between the hardened layer and the upper hardened layer. After the above structure is adopted, the hardened layer and the coating layer arranged in sequence on the upper and lower sides of the substrate layer and the hardened layer located on the substrate layer and the upper hardened layer are arranged in sequence. The color-changing coating between the two layers can not only improve the light transmittance and prevent reflection of light through the set coating layer, but also the structure design of the one-sided color-changing coating can be placed in parallel during the coating process, preventing bubbles during the coating process. In addition, the unilateral discoloration coating is located on the outside, which can also improve the sensitivity of the reaction and improve the discoloration effect.
The above is the editor of Best Finished Single Vision Photochromic Brown lens: a brief introduction to the relevant knowledge of single-sided photochromic lenses.