Consumers choose the Fake Oakleys Frogskins Sunglasses Cheap for Sale lens when selecting an increasing proportion of color film. More consumers do not understand the color film, only occasionally found himself a friend of the same pair of glasses lens at different times have different colors and feel strange.
First, what color film is?
Modern society increasingly serious pollution of the atmosphere, the ozone layer has been damaged a little, glasses exposure to UV sunlight. Color film is slightly discolored lenses containing silver bromide grains factor and copper oxide. When bright light, silver bromide decomposition of silver and bromine, decomposition of tiny grains of silver, so the lens showing dark brown; When the light dimmed, silver and bromine in the copper oxide catalysis regenerate bromine silver, so the lighter the color of the lens again.
Second, the advantages of color film than ordinary lenses Where?
UV rays can "sunburn" surface of the eye, the cumulative effect of long lead directly to a variety of eye diseases. Such as photokeratitis, while also grow healthy macula of the eye surface. Two other common cause pingueculae and pterygia.
According to a recent survey showed that the cumulative effect of long-term exposure can cause eye and around sensitive areas and age-related serious diseases, including cataracts and melasma sex under ultraviolet light, which is the cause of blindness in the elderly. According to data released by the World Health Organization show that 16 million people worldwide each year due to cataract blindness, of which 20% is due to the long-term exposure to UV-induced UV hazards unusual.
When color Cheap Ray Bans Wayfarer Sunglasses Outlet Sale glasses encounter ultraviolet light, its coating layer immediately in blocking ultraviolet intrusion while quickly darken substantially blocking UVA and UVB infringement of our eyes. Color film in the developed world for its health, convenience, aesthetics and many other advantages, has long been recognized by health-conscious consumers annually Lenses customers to double-digit growth rate.
Third, the price of color film is how much it cost?
In China, the color film glasses are the new face of retail, general consumer awareness of color film still, there are many question marks, but the mirror-plated 'photochromic materials' color film is about twice the normal lens, higher Price also hindered its popularity. In actual fact, as the transparent color lenses can be worn glasses indoors, outdoors and can be comparable to the price of anti-UV sunglasses, buy a pair of color lenses with two pairs of lenses than the cost is much lower.
Fourth, change color film color
A sunny day when: In the morning, the clouds thin air, less ultraviolet barrier, reaching the ground is more, so the depth of the morning Lenses relatively deep. In the evening, ultraviolet light is relatively weak, as the evening sun farther from the ground during the day due to the accumulation of fog after blocking most of the ultraviolet rays; so this time the color depth is very shallow.
2, cloudy day when: UV sometimes not weak, it is possible to reach the ground, so the color of the lens is still able to change color. It does not change color in the room almost transparent color lenses can provide the most suitable UV and glare protection Tiffany and Co Key Necklace Jewelry Outlet glasses in any environment, timely mediation lens color according to the light, at the same time protect eyesight, anytime, anywhere for eye health protection.
3, the relationship between color film with temperature: Under the same conditions, as the temperature rises, the color of the lens discoloration due to temperature rises slowly as shallow; Conversely, when the temperature decreases when color lenses will slow slow dark. So why summer light color, winter color depth is the truth of.
Three types of five, color film
1, the surface layer style: the lens surface is coated with a thin little discoloration agent. Its advantages, background shallow near bottomless appearance was nice; but the biggest drawback, discoloration time extremes, especially high temperature, it is very easy to not change color.
2, into the formula: in general the lens surface into 1-2 mm discoloration agent advantages: a little bit of background, color uniformity. But Disadvantages: Since only a little discoloration on the surface, a lower surface does not change color, making it easy layering unchanged.
3, incorporation-type: in the monomer feed on mixed well discoloration agent, produced the entire lens is filled with color agents; advantages of color for a long time, high temperature; shortcomings, the lens in the middle and edge color will be a little gap. But we all know, the edge thickness and the thickness of the middle of the center of the lens is completely different, so look at it to color deviation; but the glasses are processed glasses when cutting pieces to take the middle part, a good pair of processing after the finished glasses, they will not dimensionless brought color problems. This process is made out of color lenses within two years of the show consistent.
After two years should be re-optometry, re-glasses, no Cheap Mac Cosmetics Makeup wholesale Outlet glasses are not worn too long advocated.