A good sunglasses can effectively protect the eyes of the sunglasses for UK women can block 99% to 100% of the UVA and UVB, filter 75% ~ 90% of the visible light. In order to ensure that the sunglasses can filter enough visible light.
Plano sunglasses with best sales to ensure that it does not cause visual distortion.To ensure that the lens will not generate vision distortions if it can be hand-held sunglasses through the lens observe distant rectangular or linear, up, down, left and right slowly moving frame, if it is found that the distortion and deflection, bending, lens optical defects, unqualified.
Lens color should be uniform, a region will not suddenly become dark.If it is a gradient color lenses, lens colors should be gradually changed from the top down. Wearing cheap sunglasses when driving should choose gray so that it does not affect the color of the traffic lights
As it is known to all, there are many colors in the lens of the sunglasses for UK women. In fact, the election of different colors will have different effects.
Blue grey: the visible light absorption rate is the highest, the visual effect is dark.
Mercury: a person with high density of lens coating for outdoor sports.
Yellow: improve the contrast, provide more accurate video, also called night vision.
Gray film: the absorption of any spectral balance, so watch the scene will only become dark, but there is no obvious difference, to show the true nature of the feeling.sunglasses with best sales.Brown: improve the visual contrast and clarity, filter out a lot of blue. In air pollution or foggy conditions, with better effect.
These are the important information about colors of lens of cheap sunglasses I would like to tell you.If you still have any problems with lenses please keeping watching my blog.