13 января 2014 года в13.01.2014 12:47 1 0 10 1

Sunglasses Coated

It is a special coating, the outer surface of the lenses that UV filters, instead of a color camera. Long-term exposure to UV can be quite harmful. Choose Fake Oakleys Frogskins Sunglasses Cheap for Sale sunglasses, the most important factor is the amount or level of UV protection. Price and darkness are secondary factors. The main form of optical radiation protection sunglasses can reduce the radiation intensity in addition to visible light, but also can reduce the ultraviolet and infrared radiation. Polarized sunglasses can also be used to eliminate the level of reflection of the water, snow, and gravel road. Sunglasses were given cash more fashionable. But the most fundamental role of sunglasses is to provide radiation protection for the eyes. The basic requirements for sunglasses is possible to eliminate unnecessary radiation damage to eyes band; reduce the intensity of the ambient light entering the eye, to provide a clear, functional and comfortable vision; maintain normal color vision, reflected in quickly and accurately identifying traffic lights; maintenance dose was dark adaptation or night vision; good impact resistance and abrasion resistance.
UV radiation received mainly from human nature. The continuous depletion of the ozone layer allows UV protection is particularly important protection against UV radiation has mainly taken the optical absorption, polarization, interference principle filter to remove excess light radiation. UV damage eye tissue should be widely appreciated, people engaged in welding activities or other special work outdoors when it should consciously choose Tiffany and Co Heart Necklace Jewelry Outlet glasses or contact lenses with UV filtration to ensure eye health. No crystal patients should choose UV-absorbing Oils can ensure that the retina from damage. Protective measures currently used are a UV absorption frame mirror, sunglasses, contact lenses, intraocular lens. Infrared radiation protection is the use of a mirror-plated metal film under vacuum. IR absorption lens will again in the form of heat radiation, it is easy to pass through the eye tissue to reach the retina.
The most commonly used metal layer is gold, silver, copper and aluminum. Film thickness compared to the corresponding radiation wavelength, as small as possible to reduce the thickness of the reflection over the Assembly. In considering the infrared to ultraviolet protection can be combined with other radiation protection. This is equivalent to enough sunshine in the shade below the light intensity. Sunglasses in light transmittance or optical density expressed in the industrial sector are also useful to express the coefficient of light and shadow. Sunglasses can reduce the radiation intensity in addition to visible light, but also can reduce the ultraviolet and infrared radiation. Tiffany and Co Bracelet Jewelry Outlet Sunglasses were given cash more fashionable. But the most fundamental role of sunglasses is to provide radiation protection for the eyes. UV radiation reaches the earth's surface by many factors. Which the solar zenith angle, ozone concentrations, clouds, surface Aledo is most important.
Surface ultraviolet radiation is not equivalent to the amount of ultraviolet radiation lens. Human activities such as personal habits, the length of time for outdoor activities, the impact of occupation on the amount of UV radiation eye is obvious, and the other factors can also affect the amount of UV radiation to the eye. Dose-dependent degree of tissue damage, that the longer the exposure time, the greater the dose, the more severe the damage caused. UV radiation causes damage to the eye, including the cornea, conjunctiva, turns the film, lens, related to epithelial damage. Human prominent eyebrow matched with dark eyebrows can block ultraviolet radiation from above.

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