as we all know, there are many kinds of different lens, like AC lens, pc lens, nylon lens and poalrized lens.while when people going to buy sunglasses. polarized sunglasses have been there first and best choice.
why people are prefer polarized lens?
polarized lens includes 7 layers. The 1st layer is polarization layer. The 2nd and 3rd layers provides durability. The 4th and 5th layers are UV protection layers to absorb UV light. The 6th and 7th layers are shatter proof layers.
polarization film helps reduce glare and reduce harmful effects from uv light. if your are a hobby for fishing, running, gold, driving, wearing polarized sunglasses will help you see more clearly at strong light.see the different of polarized lens and non-polarized
there are two thickness for polarized lens. 0.74mm and 1.1 mm, they are with same function.
1.1 mm is thicker than 0.74, it looks good quality than 0.74mm, if you have extra dollar to spare, or would like better quality lens. 1.1mm lens will suit for you.
someone may ask how can i know it is polarized lens. there are two easy ways. firstly you can test by polarized test card. you will see the obviously different between polarized and non-polarized.
secondly, put the lens before the computer screen and turn around the lens, you will see the lens color will become darker.