Color-changing lenses can protect our eyes, so they are very popular in the market. However, consumers are always half-knowledge about color-changing lenses, so they are often pitted when they buy them. Today, the editor of Single vision photochromic lens has compiled this article "Some common questions about color-changing lens customers", hoping to solve the doubts of consumers.

1. The lens can change color, will the light transmittance affect it?
After the lens is discolored, it can be used as sunglasses. At this time, the function is to block the sunlight. At this time, the light transmittance will naturally decrease. If the light transmittance of the original transparent state is maintained, the function of the sunglasses will be lost. After the color is restored, its light transmittance will return to its original state, without any effect on vision.
2. What is the reason for the discoloration of the discoloration film?
There are two kinds of non-discoloration and two factors, one is the light condition, and the other is the color-changing factor. If it does not change color under light conditions, then its color change factor has been destroyed, so that the lens cannot change color.
3. What are the special optical characteristics of the color-changing lens?
Some chemicals are added to the color-changing lens, so that the originally transparent and colorless lens will turn into a colored lens when exposed to strong light for protection. It will change the depth of the color with the change of the light intensity, the stronger the light, the deeper the color change. It feels comfortable to wear, does not fatigue after long-term use, and has good chemical stability and mechanical strength. It can be used as daylight anti-glare goggles for fieldwork, plateau and snow workers, and also as goggles for operators under ultraviolet and shortwave laser conditions and for patients with certain eye diseases.
4. What is the reason for the poor color recovery ability of the color-changing lens?
When it comes to the color-changing ability of the color changer, I have to mention its color-changing ability. The reason why the color changing lens can change color is because of its own color change factor. Under light, the color change factor is decomposed into colored silver and other elements. When there is no light, the decomposed silver and other elements are recombined into colorless Discoloration factor. The poor color recovery ability is caused by the inability of silver to combine with other elements, or the combination speed is relatively slow, indicating that its color change factor has been destroyed.
5. Why does the color change color become darker after wearing for a long time?
The color-changing film has been worn for a long time and the color is darker because its color-changing factor cannot be restored to its original state after the color change, so the color is darker than before. This phenomenon is more common in ordinary color-changing films on the market. A good color-changing film is This will not happen.
The above is the introduction of Single vision photochromic lens editor: about some common problems of photochromic lens, I hope it can help you.