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What lenses are good for sunglasses? _Sunglasses knowledge_

by:Eugenia     2022-02-18
Lenses can be divided into five types: anti-reflective protective lenses, colored lenses, painted lenses, polarized lenses, and color-changing lenses. Generally, genuine sunglasses use polarized lenses, which can completely block the glare emitted by scattering, refraction or reflection, and prevent the damage of ultraviolet rays to the eyes. However, in addition to polarized lenses, other types of lenses can also block some harmful glare from harming the eyes. Let's take a look at the characteristics and performance of these lenses together. Colored lenses have the same wearing effect as painted lenses. The difference is that in the manufacturing process of the lenses, a certain chemical substance is added to the colored lenses to make the lenses appear colorful to absorb light of specific wavelengths; while the painted lenses only work Paint the color on the lens. Generally, most of the myopia sunglasses with power are painted lenses. Polarized lenses are lens types that are more commonly used in sunglasses. Special vertical coatings are added to the lenses, which can filter the dazzling rays of the sun in equal directions on the water, land or snow, as well as the ultraviolet and infrared rays of the sun. Suitable for outdoor sports, such as driving, marine activities, skiing or fishing, etc. The manufacturing process of anti-reflective protective lenses is similar to that of color-changing lenses. Certain chemicals are added to the lenses. For example, a thin layer of magnesium fluoride is added to the anti-reflective protective lenses to prevent glare reflection and make you see things more clearly. And it is not interfered by strong light; and the color-changing lens is added with silver halide chemical substances, so that the original colorless and transparent lens will become a colored lens when exposed to strong light to prevent glare, glare, The anti-ultraviolet effect is generally used in the production of myopia sunglasses. There are about 5 types of sunglasses lenses, each of which has its own characteristics and performance. However, for sunglasses lenses, polarized lenses are widely used and are the type of lenses with better polarizing effects. However, in addition to the type of sunglasses lens, the lenses are divided into resin lenses, glass lenses, PC lenses, etc. according to the material. Among them, the resin lens is a lens material with better anti-ultraviolet rays and glare.
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