Terms of optical lenses

UV

The word comes from ultraviolet, Fake Oakleys Frogskins Sunglasses Cheap for Sale commonly referred to as ultraviolet light, prolonged exposure would infringe the human cornea and retina. Ultraviolet light with a wavelength between 200nm ~ 380nm in the sun light.

Comprise three: UVA wavelength of 315nm ~ 380nm, UVB wavelength of 280nm ~ 315nm, UVC wavelength of 200nm ~ 280nm. Reach the Earth's surface in the ultraviolet UVA accounts for 97%, UVB accounts for 3%, UVC close to zero (the majority being absorbed by the atmosphere). UV damage to the human eye depends mainly on the wavelength, the irradiation time and intensity of ultraviolet radiation.

POLARIZED

Sense of the word is polarizing. The principle is the use of Cheap Ray Bans Wayfarer Sunglasses Outlet Sale polarized light, effectively filter out the glare of stray light, glare, reflected light and harmful UV rays, so that the light passes through the field of view in one direction parallel to the eye can be kept comfortable.
Lens choice

Different seasons different options:

Summer should choose a lower transmission rate of film color, such as gray film, brown film and coated tablets; sunshine weaker spring and winter, you should choose a higher transmission rate of film color, such as orange slices, white tablets.

Different sports environment different Cheap Mac Cosmetics Makeup wholesale Outlet options:

The beach, fishing, mountain climbing, etc. should choose dark film or coating films such as; riding, jogging select orange slices, light gray and light brown tablets tablets.

Space-chip technology

A widely used in aerospace equipment, advanced materials. Light weight, 37% lighter than glass, thin 26%, greatly reducing the load on the nose: impact resistant, not broken do not crack, its impact resistance is 10 times the normal resin sheet, and Tiffany and Co Key Necklace Jewelry Outlet take care of your eyes from foreign objects damage.