Do you know the optical properties of photochromic additives and the methods of plastic lenses? Photochromic Single Vision Grey lens in china Xiaobian will take you to a brief introduction.

Method for Optical Properties of Photochromic Additives for Plastic Lenses. A casting resin containing a photochromic additive is placed between a mold and a lens preform and then cured. A casting resin substantially free of a photochromic additive is placed in a The resin is then impregnated with the photochromic additive. The layered resin containing the photochromic additive is placed on the surface of the mold and cured into a gel. Subsequently, the basic A casting resin containing no photochromic additive is placed between the coated mold and the lens preform, and then cured. The substantially photochromic additive-free casting resin is placed on the surface of the mold, and Cured to form a gel. The casting resin containing the photochromic additive is then placed between the coated mold and the lens preform and cured.
The above is the introduction of Photochromic Single Vision Grey lens in china: a brief introduction to the knowledge about the optical properties of photochromic additives in plastic lenses.