What are the factors affecting the quality of sunglasses

Whether your sunglasses really fashionable and is suitable for you? Good sunglasses can effectively block the ultraviolet rays and glare, sun lens color depth is not of great help for uv resistance. Many countries have the uv absorption rate of sunglasses the rules. In addition, such as polarizing film, reflective film and films such as dyeing, can make the sunglasses better reduce glare, reflection, and cloudy increase object contrast in the fog, make the vision clear. When buying sunglasses, people not only the pursuit of beautiful, also wants to reduce light, harmful ultraviolet ( UV) The glare of light and damage to the eyes. Ms sunglasses factory YC9702 sunglasses black/C3 lens dazzle colour blue elements affecting the quality of too glasses: 1) Glare from the surface or smooth surface reflected light than see things need 10 to 12 times more light. When driving or sports activities, glare can cause eye pain, distraction at the same time, cause certain danger. To determine whether the sunglasses can block the glare, please wear sunglasses stood in front of the mirror. If you can see my eyes, the depth of the sunglasses is not enough to resist glare. Ms sunglasses factory YC9703 sunglasses C3 black/dazzle colour blue 2) Visible light in sunny weather, to make the eyes feel comfortable, should choose can stop - 75% 90% of visible light sunglasses. To absorb at least 75% of visible light sunglasses can protect the eyes from blue light ( Belong to the category of visible light) The damage. It is hard to watch blu-ray, often oblique. Blue can make the color distortion. Sunglasses factory YC9708 general sunglasses C7 black box silver leg/lens grey 3) Visual effect sunglasses should be suitable for your clear, comfortable vision, should not be clamping head. But if the sunglasses is loose, and affect the visual comfort. Mask or cover edge sunglasses can stop ordinary frames, on both sides at the top and bottom of the ultraviolet light, but they may also increase the optical distortion. To test the visual effect, please wear a sunglasses, then looked at the edge of the vertical or in a straight line ( Such as door frames or ground tile) 。 Moved his head back and forth, make the eye on the lens. If found straight lines appear curved, means the lens flaws, make visual distortion. 4) Dyeing lens should be uniform, not two-tone color small pieces. If using the gradient lens, lens color from the top to the end end should gradually becomes shallow, and even color. If you intend to buy use while driing sunglasses, please check the label and make sure whether they accord with the requirement of identifying traffic signal. Some sunglasses shading degree can make the color distortion of road signs, especially that block uv light has the special function of sunglasses. Can't wear the sunglasses when driving.
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