To be honest, there will be some data on the tag of women's sunglasses for our reference, first of all, what categories 1, 2, 3, and 4 on the tag of sunglasses represent
What? Types 1, 2, 3, and 4 represent that according to the transmittance of visible light, lenses can be divided into categories 1-4 from shallow to deep, suitable for different scenarios. One category: light-colored sunglasses, mostly used for decoration (projection ratio 43%~80%). Class II: Light-colored sunshade mirrors for daily use (transmittance 18%~43%). Three categories: sun visor, suitable for outdoor sports (transmission ratio 8%~18%). Category 4: special-purpose sunglasses for professional items such as swimming (transmittance 3%~8%)
How do you judge whether the UV protection function of sunglasses is good or bad? Sunglasses generally have these three types of marks, which means that they have the function of UV protection.
1.UV400: Indicates ultraviolet rays with a wavelength below 400nm, and the average transmittance through the lens is <2%
2. UV, anti-ultraviolet: Indicates the ultraviolet rays with a wavelength below 380nm, and the average transmittance through the lens is <2%
3.100% UV absorption: It means that the lens can filter out ultraviolet rays in all wavelength regions, and the average transmittance is <0.5%.
Is it true that the darker the color of the sunglasses, the better the function of blocking ultraviolet rays? No, the depth of the lens color only affects the degree of absorption of visible light by the lens, and has nothing to do with the ability to protect against ultraviolet rays. Therefore, light-colored sunglasses can not only prevent sun protection but also have concave shape.
Why do I feel dizzy when I wear sunglasses?
Common reasons: the color of the lens is too dark, such as wearing sunglasses with dark lenses for a long time, it will cause visual fatigue, and the glasses are worn too tightly
As a result, it oppresses the sun six, and finally leads to dizziness and nausea symptoms. Some people wear gradient sunglasses, and their eyes will feel uncomfortable phenomenon of clothing.
Design and Fashion of KOALAEYE Eyewear
Women's glasses, which are functional and sexy, can add so much to an outfit and even serve as a personal expression. So, it's only natural that you're looking for new frames to add a bit of style to your everyday outfit. Light, flexible and colorful, the attractive style can effectively modify the shape of the face and has become the choice of more people. The production process is complex and the design looks simple. As a classic product, the plate series is enduring. As the tide and fashion style change, its position will not change. With different styles, the feel and appearance are better. They can effectively reduce the pressure of the bridge of the nose. The stylish style is popular with most people.
