The classification of sunglasses lenses

[faeyeglasses]

1 anti-reflective protective lens: This lens is coated with a thin layer of magnesium fluoride, to prevent light reflection, so you see things more clearly and without light interference. To really test your glasses with anti-reflective protective lenses, glasses can be aligned light source, if you can see the purple green reflective, it means the lens does have anti-reflection coated with a protective film.

2 Color Lens: also known as "stain lens" is in the lens production process, coupled with some chemical substances, so the lens showing the color, to absorb specific wavelengths of light. This is the most commonly used lens sunglasses type.

3 coloring lenses: the effect of such lenses and color lenses presents the same, only made ​​in different ways, it is the color applied to the lens surface, the most well known is the "gradient-like coloring lenses," color is above the deepest, and then gradually down light. Generally have more degrees of sunglasses lenses are coated with colored handle.

4 Polarized lenses: In order to filter the sun shone on the water, land or snow on the equality of the direction of the dazzling light, perpendicular to the lenses to add a special coating, called polarized lenses. Most suitable for outdoor sports (such as: maritime activities, skiing or fishing) use.

5 Lenses: It was also known as the "photographic lens." Because the silver halide in the lenses to add chemicals to the original colorless and transparent lens, case of strong light, will become a colored lens, to do the protection, it is suitable for both indoor and outdoor use.

[tory1953]

I recently talked to a patient who picked up a pair of tinted lenses
without any UV coating. This is actually worse than having no tint
at all, Without UV protection you are actually letting in more UV than
if you didn't wear sunglasses at all. Due to the enlarging of the iris.

[jimbojones]

i wear sunglasses because I am cool like that.

[jimbojones]

i wear ray bans yo.