Different sunglasses with different features
A good sunglasses, besides luxuriant appearance, it also have the function of good prevent ultraviolet ray to prevent strong light, have certain even at the same time fight bump performance.This is all determined by the material of the sunglasses lenses.Sunglasses lens can be divided into plastic lens,glass lens, polarizing lens, photochromic lens, resin lens, PC lens, do you know it?
Glasses lens: The most outstanding advantage of glass lenses is not easy to deformation, not affected by the pressure of the frame.The disadvantage of glass lenses is that they break easily, which will damage the eyes.At present, the newly developed reinforced glass lens has more outstanding performance than ordinary glass lens, and it is also considered as a kind of safety lens.we need to keep it in saft conditions
Photochromic lens: the color of the lens changes as the light changes, enabling the eye to adapt to different environments.In strong light, the color of the lens will be dark.In the light, the lens will automatically become lighter in color,This type of lens is already used for myopic sunglasses.This color lens form is also considered the most convenient ,and this model lens is very fashion and popular,most people like it.
Polarized lens: It can blocks the stronger sung light and protect our eyes in good ccondition.
Plastic lens: Its most obvious feature is its lightness and non-breakability. and the color treatment of plastic lenses is also relatively simple.The disadvantage of plastic lens is its wearability, easy to scratch, and easy to deform when the lens is hit, so we should maintain it more carefully.
Resin (CR39) lens: Its characteristics are light weight, high temperature resistance, strong impact resistance, can effectively block ultraviolet ray and other functions.The great advantage of the resin lenses used in sunglasses is that they are easy to stain.Many fashionable sunglasses take advantage of the properties of resin-shaped lenses for coloring.However, the toughness of the resin lens is poor and the impact resistance is not good.These types of sunglasses are widely used and have a strong decorative effect, it making them a good choice for fashionistas.
PC lenses: PC is polycarbonate, which is a type of plastic (PC for short).It is a polymer whose molecular chain contains carbonic acid groups.The LENS made by the PC is just a plastic sunglasses lens.There are PC chips commonly used by professional athletes and a set of colored or colorless plastic pieces that cost just a few cents.It is characterized by light weight and good coloring performance.The disadvantages are low wear resistance and unstable optical performance.PC lenses are more suitable for sports and drivers.
Different sunglasses lens with different features,different uses,you can make choice for your own sunglasses.
