Tips on using sunglasses

1) Under normal circumstances, 8-40% of the light can penetrate sunglasses. Most people choose 15-25% sunglasses. Outdoors, most color-changing glasses are in this range, but the light transmittance of glasses from different manufacturers is different. Darker color changing glasses can penetrate 12% (outdoor) to 75% (indoor) light. Brands with lighter colors can penetrate 35% (outdoor) to 85% (indoor) light. In order to find glasses with suitable color depth and shading, users should try several brands.

2) Although the color-changing glasses are suitable for daily use, they are not suitable for sports activities in glare environments, such as boating or skiing. The shading degree and color depth of sunglasses cannot be used as a measure of UV protection. Glass, plastic or polycarbonate lenses have added chemicals that absorb ultraviolet light. They are usually colorless, and even the transparent lens can block ultraviolet light after treatment.

3) The chromaticity and shading of the lenses are different. Sunglasses with light to moderate shading are suitable for daily wear. In bright light conditions or outdoor sports, it is advisable to choose sunglasses with strong shading.

4) The shading degree of the gradient dichroic lens decreases sequentially from top to bottom or from top to middle. It can protect the eyes from glare when people look at the sky, and at the same time clearly see the scenery below. The top and bottom of the double gradient lens are dark in color, and the color in the middle is lighter. They can effectively reflect glare from water or snow. We recommend not to use such sunglasses while driving, because they will blur the dashboard.

Post time: Oct-28-2021