Sunglasses six lens classification common sense

When purchasing sunglasses, don’t just focus on its style and fashion. The different categories of lenses are also key points that cannot be ignored. Different types have different functions. Only by understanding can you better match a fashionable and practical sunglasses for yourself.

Category 1 - Anti-reflective protective lenses:

This kind of lens is coated with a thin layer of magnesium fluoride on the surface to prevent strong light reflection, allowing you to see things more clearly without interference from strong light. To test whether your sunglasses actually have anti-reflective protective lenses, point the glasses at a light source. If you see a purple or green reflection, it means that the lenses do have anti-reflective protective coatings on them.

Category 2 - colored lenses:

Also known as "dyed lens", it means that some chemical substances are added during the lens manufacturing process to make the lens appear colored to absorb light of a specific wavelength. This is the most common type of lens used in sunglasses.

Category 3 - tinted lenses:

The effect of this kind of lens is the same as that of colored lenses, only the way of making it is different. It is to paint the color on the surface of the lens. The most well-known is the "gradient tinted lens". fades away. Generally, prescription sunglasses are mostly treated with tinted lenses.

Category 4 - polarized lenses:

In order to filter the glare of the sun in the same direction on the water surface, land or snow, special vertical coatings are added to the lenses, which are called polarized lenses. Best for outdoor sports such as sea activities, skiing or fishing.

Category 5 - Photochromic Lenses:

It is also called "photosensitive lens". Because silver halide chemicals are added to the lens, the originally transparent and colorless lens will turn into a colored lens for protection when exposed to strong light, so it is suitable for both indoor and outdoor use.

Category 6 - Sunglass clips:

Sunglass clips are polarized sunglasses specially designed for myopic people, which can effectively prevent glare and ultraviolet rays. Especially suitable for driving, outdoor, fishing and other outdoor sports. Using polarized lens technology, the visual resolution is greatly improved. Eliminate 99% of reflected light and scattered light, making your vision clearer and smoother. The lenses are specially filmed and strengthened to provide effective wear resistance, scratch resistance and impact resistance.

When purchasing glasses, in addition to looking at the corresponding type, you must also pay attention to the material selection of the glasses. Generally, spectacle lenses are divided into several types such as resin, glass and crystal, and both lenses and frames should have a shelf life. It is also necessary to see clearly the product quality inspection certificate, the name and address of the manufacturer of the purchased glasses, and at the same time ask for a shopping invoice. Once quality problems occur, you can protect your legitimate rights and interests.