Good quality sunglasses cost

Good quality sunglasses cost? Sunglass is a kind of to prevent sunlight intense influence to the human eye damage eyesight health supplies, follow you to raise the level of material culture sunglasses and can be used as beauty or special accessories that reflects individual style more. Sunglasses can generally be divided into according to the use shading mirror, light color sunglasses and three types of special purpose sunglasses. Sunglasses factory YC9713 general sunglasses C1 gun color 1 / ash, must first know the intention of the choose and buy sunglasses from the above introduction of several kinds of sunglasses, we know the different kinds of sunglasses have their different application occasions and the crowd. We want a choose and buy sunglasses must first determine whether your intention is the choose and buy for sunshade, or to match clothing decorative? Besides the sun ultraviolet prevention function requirements? Function of the safety of the lenses have any special requirements? Only clear these intentions, then combining the actual effect of style and wear in my face, to purchase a pair of appropriate sunglasses. Good quality sunglasses cost? 2, learn to understand the labeling not all sunglasses has the function of anti ultraviolet, the basic demand of a satisfactory specification of sunglasses, can only say that without blocking light together through more ultraviolet light. If only a pair of sunglasses to block light, but not from the same amount of uv light, for the wearer, will bear more than don't wear sunglasses ultraviolet ( Wear sunglasses, luminous flux would fall into the human eyes, cause the wearer pupil enlargement) 。 Sunglasses sold in shops on the counter, the lenses, tag or on the packaging usually have obvious symbol, like the fabric ingredients marked in clothing, when consumers purchase must be carefully look at it. Good quality sunglasses cost? 1) About ultraviolet prevention function identifies a pair of sunglasses ultraviolet prevention function, we can't identify with the naked eye, the manufacturer of goods express promise is consumer choose and buy has the protective function of sunglasses for reference, we can in some commodity label and glasses to see positive such as: '100% of ultraviolet prevention', 'UV400', 'cut off all of the ultraviolet ray', such as 'anti ultraviolet' express identity. Good quality sunglasses cost? Ultraviolet (uv) refers to between 200 nm to 380 nm wavelength of the sun's rays, including three categories: UVA wavelength of 315 nm to 380 nm, UVB rays wavelength of 280 nm to 315 nm, UVC wavelength of 200 nm to 280 nm. The sun's rays reaching the earth's surface ( 290nm～2000nm) In the ultraviolet (uv) accounted for about 13%, which accounted for 97% of UVA, UVB accounted for 3%, UVC close to zero. Uv damage to the human eye first depends on the wavelength of ultraviolet radiation, radiation time and strength and the strength of the human eye itself defense mechanism, cornea, lens is often the uv damage of ocular arrangement, sunlight keratitis and corneal endothelial damage, daylight cataract is associated with eye diseases. In order to protect the health of the eye, you can choose to have made of ultraviolet prevention function of the lens sunglasses, try to eliminate under 380 nm uv light. Good quality sunglasses cost? 2) Logo has the security function of sunglasses on security features, its lens selection such as PC pieces and impact resistant material, on the label and clarify the book tend to be marked 'impact resistant function', 'through the FDA certification', 'conforms to the European and American high specification' and so on, if the goods can reach the demand on the logo, motorcyclists, drivers, etc have special requirements on the safety of consumers is a good choice. Commitment to logo on goods, consumers should learn to protect themselves, keep the label or to clarify or good, or let the merchants marked on the invoice, in the event of dispute, we would not be forced to lack of basis. Good quality sunglasses cost? 3, to identify the lens inner quality of basic skills (1) Degree of the lens should be satisfied with the demand for flat glass, and there should be no affect vision optical spot disease. Concise identification methods for, can put sunglasses in front, look through the lens in the distance, such as window frame or door frame, then glasses from top to bottom and move around, policy should not have swing and wavy deformation. Good quality sunglasses cost? 2) Lens color cannot be partial, should be the colour of the surrounding environment is not distortion, the edges of the objects clearly has the ability of useful to identify different color lights. Lens colour shades of choice, because of depending on the required activities, for different light sources and occasions, lens color can affect the shading effect. To make useful sunglasses can block the summer light, the color of the glasses with enough depth, but by bike or drivers, the lens does not choose the color is too deep. The above content provided by glasses sunglasses factory network, more information please visit the website, the website: https://www. yichao。 Cn /
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