Principle of photochromic lens

The working principle of photochromic lenses is based on reversible reactions of light color interconversion. This type of lens quickly darkens under light and ultraviolet radiation to block strong light and absorb ultraviolet radiation. After leaving the sunlight or ultraviolet source, the lens will gradually return to a colorless and transparent state.
The core component of photochromic lenses is silver halide particles. These particles will decompose into halide ions and silver ions under the action of ultraviolet light, causing the lens color to darken. After leaving the ultraviolet irradiation, these ions recombine into silver halide, and the color of the lens returns to transparency. This reversible chemical reaction enables photochromic lenses to automatically adjust according to ambient light, both protecting the eyes and enhancing the visual experience.
Application scenarios and advantages and disadvantages of photochromic lenses
photochromic lenses can be used both indoors and outdoors, making them particularly suitable for people who are sensitive to strong light. They can not only provide shading function outdoors, but also maintain the corrective function of ordinary glasses indoors. In addition, some photochromic lenses also have anti blue light function, suitable for people who drive for a long time or work in dim environments.
Maintenance and upkeep of photochromic lenses
The service life of photochromic lenses is generally around two years, but maintenance is necessary. If the color changing effect of the lens deteriorates, it may be due to the destruction of the color changing factor or slower combination speed. During maintenance, it is important to avoid prolonged exposure to strong light and regularly inspect and maintain the lenses.