Mirrored sunglasses refer to sunglasses with a reflective optical coating on the outside of the lens. Mirror sunglasses are single-sided mirrors. Because this kind of lens looks a bit like a mirror from the outside, it is called mirror sunglasses. Such glasses usually make the wearer’s vision appear brown or gray. The mirror coating can further reduce the light passing through the tinted lens by 10-60%, making it particularly useful in sand, water, snow, and high altitude areas.
The color of the mirror coating has nothing to do with the color of the lens. It is determined by the thickness and structure of the layer.
The simplest form of mirror coating is a single-layer film deposited from a suitable metal, usually prepared by ion beam deposition, sputtering deposition or vapor deposition. However, this coating is very easy to scratch and degrade, especially in corrosive environments such as salt water.
Here are some advantages and disadvantages of mirrored sunglasses:
Advantages:
Glare is the main reason people wear lens sunglasses. This kind of glasses can prevent too much light from entering the lens, thereby avoiding glare from affecting vision. Especially when you are driving or participating in outdoor sports in sunny conditions, this is particularly important for safe sports.
It looks very fashionable. This kind of contact lens can show a variety of colors, not as good as blue, green, red, etc., to protect your eyes from ultraviolet rays.
Mirrored sunglasses can also hide your facial expressions. When you don’t want the other person to see your inner thoughts, this kind of mirror sunglasses is the best hiding tool. We can often see such shots in movies.
Disadvantages:
Although mirror lenses are stronger than most lenses, you still need to be careful not to get scratched.
Secondly, when you want to remove mirror sunglasses, you must remember to wear soft gloves, otherwise, it will be easily corroded by the sweat on your hands, and the mirror will no longer become shiny.
Finally, the price of mirror lenses may be a bit more expensive than standard tinted lenses, but you have to pay for the appearance and quality of the lenses. Sunglasses with lenses can protect your eyes from sun damage and prevent excess light from reaching your eyes, but in the long run, these glasses are worthwhile.
