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Sunglasses,to meet the above requirements

AaronMalcolm
AaronMalcolm 7/31/17 8:43 AM



380nm wavelength,in the average transmittance should ≤τVτSUVA.UVB of b) the wavelength of? 315nm at 290nm,the average transmittance τSUVB should ≤0.5τV.In addition,the band UVB,light-colored sunglasses,the average transmittance% ≤30 should,average transmittance should be ≤5% sunshade.If the sunglasses meet this requirement,and ultraviolet which,while also blocking a substantial amount of ultraviolet radiation,either by reaching the most basic requirement of protection for blocking light to wear sunglasses,at least (to accept sunglasses Masu wear Wear corresponding amount of light amount increases) ultraviolet,when the human eye to receive UV than not wear sunglasses,which under the same external conditions,can not stop the sunglasses,<br/><a href="http://www.loudworx.com/">Atacado barato Adidas ZX 750 Masculino</a> which was increased in's pupil,as a result,it will reduce the flux to the human eye.In November 2006,GB10810.3 "spectacle lenses and related products - Part 3: In the formal implementation of the transmittance specification of measurement method",is well-defined ultraviolet transmittance exceed 5% It is used as becoming not lens.Sunglasses,following which generally are clearly,has a UV function:A) is displayed as "UV400": This is a 400nm of transmittance following wavelength (λ) spectrum (λ) lens of the UV cut-off wavelength at 400nm with less than 2% τmax maximum,it means.B) "UV",labeled "UV": This is the lens of the UV cut-off wavelength from 380nm,i.
<br/><a href="http://www.realtyappmap.com/">Cheap Shoes Store Womens Adidas Sky Hi</a> e.,the maximum of the spectral transmittance (λ) is less than 2% its wavelength (λ) τmax is 380nm it means that it is less.C) and the "absorbing 100% UV" labeled: means that this is a lens has a 100% ultraviolet absorption function,an ultraviolet region,ie,the average transmittance of 0.5% or less To do.Sunglasses,to meet the above requirements,it is the true meaning of sunglasses of UV protection.an important indicator UV performance of sunglasses if we can not identify with the naked eye,sunglasses with UV protection function.Chinese performance criteria of the current product for basic requirements of UV only,the wearer can harmless.Protection,
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