The color-changing lens is based on the principle of the reversible reaction between light and color. The lens can be quickly darkened under light and ultraviolet radiation, blocking strong light and absorbing ultraviolet light, and has a neutral absorption of visible light; returning to the dark place, it can quickly restore the colorless and transparent state , To ensure the transmittance of the lens. Then, when choosing, we should mainly consider the functional characteristics of the lens, use, personal color requirements, and so on. Photochromic lenses can also be made into a variety of colors, such as gray, brown and so on. Let's follow the editor of Single Vision Photochromic Darker lens to get a simple understanding!

1. Gray lens: can absorb infrared and ultraviolet. The advantage of the color changing lens is that it will not change the original color of the scene because of the lens, and can effectively reduce the light intensity. The gray lens can balance the absorption spectrum, so the scenery will only darken, but there will be no obvious chromatic aberration, showing a real sense of nature. It belongs to the neutral color system, suitable for everyone.
2. Pink lens: This is a very common color. It can absorb ultraviolet light. If used as glasses for correcting vision, women who wear them often can choose reddish lenses, because reddish lenses have better absorption of ultraviolet rays and can reduce the overall light intensity, so the wearer will feel better.
3. Light purple lenses: same as pink lenses, because of the darker color, they are more popular with women.
4. Brown lenses: can absorb ultraviolet rays, filter out a lot of blue light, improve visual contrast and clarity, so it is very popular with wearers. Especially in the case of severe air pollution or fog, the wearing effect is better. Generally, it can block the reflected light from smooth and bright surfaces, and the wearer can still see the subtle parts. It is an ideal choice for drivers.
The above is the introduction by the editor of Single Vision Photochromic Darker lens: related knowledge about color changing lenses.