1. Plastic lenses are lighter and less fragile than other lenses.
This is a material that many sunglass brands like to use. Its most obvious feature is that it is light and not fragile. The UV protection function of plastic lenses without any treatment is significantly better than that of glass lenses, and the color processing of plastic lenses is also simpler.
The disadvantage of plastic lenses is that they are wear-resistant and are easily scratched. The lenses are also easily deformed when impacted, so you must be more careful in maintaining them. There are currently three main types of plastic lens materials, namely resin lenses, PC lenses, and acrylic lenses.
2. The optical performance is very stable compared to glass lenses.
Glass lenses are something we often come into contact with. The most prominent advantage of glass lenses is that their optical properties are very stable. This is a consistent advantage of glass lenses. It is also the same when used in frame glasses. In addition, glass lenses are not easily deformed and will not Affected by the pressure of the frame.
The disadvantage of glass lenses is that they are easily broken, and breakage can easily cause damage to the eyes. The newly developed tempered glass lenses have much better performance than ordinary glass lenses and are also regarded as safety lenses.
3. Polarized lenses make vision clearer than
This is a lens used on polarized sunglasses. It uses the polarization principle of light to block glare from all directions outside the lens, making the vision clearer and safer when driving.
4. Color-changing lenses can automatically adjust according to the intensity of light, but other materials cannot
Compared with photosensitive lenses, the color of the lenses will change accordingly due to changes in light, allowing the eyes to adapt to different environments. Under strong light, the color of the photochromic lenses will deepen, and when pressed, the color of the lenses will automatically lighten. This kind of lens has been used in myopia sunglasses. This type of sunglasses with photochromic lenses is also considered to be the most convenient and most beautiful type of myopia sunglasses, and is more popular than clip-on sunglasses.
