Lecheng Photochromic Lenses

Short Description:

Photochromic lenses are a type of eyeglass lens that darken when exposed to ultraviolet (UV) radiation and return to their clear state when the UV source is removed. The lenses contain photochromic molecules that undergo a chemical reaction when exposed to UV radiation, causing them to darken. The degree of darkening depends on the intensity of the UV radiation and some of photochromic molecules present in the lenses.

Photochromic lenses are ideal for people who spend a lot of time outdoors and want to avoid the hassle of switching between regular glasses and sunglasses . They provide protection against harmful UV radiation and glare from the sun.

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The principle of photochromic lenses: Photochromic lenses are generally achieved by adding silver halide substances to the lens itself or rotating a color-changing film layer on the surface of the lenses. When silver halide encounters ultraviolet light, it decomposes, generating halogen atoms and silver atoms, resulting in the color change that everyone sees, such as gray or brown. The lenses darken under strong light. After losing the outdoor line, silver halide is synthesized, restoring the original transparent color. The color of the lens is automatically adjusted according to the intensity of light or ultraviolet radiation, and it is used for both purposes, automatically blocking ultraviolet radiation.

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Under strong light, it can block and prevent ultraviolet rays from entering the eyes, effectively protecting the eyes from UV damage and reducing the risk of UV damage.

Wearing photochromic lenses can effectively avoid squinting under strong light and reduce the probability of wrinkles in the eyes.

Photochromic lenses combine myopia glasses and sunglasses into one, allowing you to switch between them without carrying two glasses when going out, increasing convenience.