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The most poisonous but ultraviolet sunglasses to help you

by:Eugenia     2020-07-26
Hot summer is coming, the ultraviolet ray also will be more and more strong, not only love beautiful female friends to worry this time, even the men will think about how to protect our skin. Actually protect the skin is simple, with some sunscreen products can be basically solved, so how to protect eyes? Better wear a pair of sunglasses. Sunglasses factory YC9705 general sunglasses light black/C3 dazzle colour LanAo modelling is just on the other hand, sunglasses protect your eyes is the labor work. A good pair of sunglasses should be 'all-rounder', it will filter out more than 99% of the ultraviolet ray in sunshine, at the same time also can stop light, this is can not only deepen the lens color can do. Including polarization, dyeing, antireflective coating is the important way to achieve the above purpose, it can increase the clarity, provide better protection, higher contrast or filter to certain types of light. But for the average consumer, it is difficult to rely on the function of the resolution to the naked eye glasses, this time, see know logo is a how let a person envy ah. Don't try so hard, now that is basic knowledge popularization, little of course not identified. 1, mark 'UV400' : this means that the lens of uv cutoff wavelength of 400 nm, namely the wavelength ( λ) Under 400 nm spectral transmittance of big value tau Max ( λ) No more than 2%; 2, mark 'UV' and 'anti ultraviolet' : this says the lens of UV cutoff wavelength of 380 nm, namely the wavelength ( λ) Under 380 nm spectral transmittance of big value tau Max ( λ) No more than 2%; 3, mark '100% UV absorption' : this means that the function of the lens is 100% for UV absorption, namely in the UV range of average transmission ratio is not greater than zero. 5%. To achieve the above requirements of sunglasses, is in the true sense of uv protection function of sunglasses. Sunglasses factory YC9711 men sunglasses C1 black/dazzle colour red distinguish what is uv protection sunglasses, we also need to know what kind of sunglasses is not in conformity with the standards, small make up to tell you, the four kinds of unqualified sunglasses can't wear. The first socket, uv protection function of sunglasses. Good the sun glasses, can stop more than 99% of the ultraviolet ray, and identify UV400 lenses are 100% ( 99. 99%) Block ultraviolet light. Cheap eyeglasses due to its poor uv protection function does not have, even that makes the remnants of ultraviolet amplifying intake among pupils, different degrees of damage to the eyes. Second, the transmittance unqualified sunglasses. Transmittance of qualified glasses, can clearly identify the color. And inferior glasses will produce traffic signals to identify obstacles, easy to cause traffic accidents. The third category id, not the labeling of sunglasses. Sunglasses generally divided into three classes, namely for sunshade shade mirror, used for decoration light mirror and used in special mirror snow goggles or waterproof surface radiation. Fourth, the fight against performance does not meet the requirements of sunglasses. Lenses easily broken when impacted by external force, debris could become a fatal injury to the person's eyes. Picture frame material is very important also, general with plates, aluminium magnesium alloy, pure titanium.
related: men sunglasses myopia glasses
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