It is determined by the thickness and structure of the layer.
Sunlight will either get absorbed, refracted or reflected depending on the angle at which it hits, however when this sunlight gets reflected from hard surfaces such as metal, water or other such reflecting surfaces, it combines together to form one concentrated glare. When this glare hits the eye, it can not only cause discomfort, but it also causes momentary blindness as well as damages the eye, over time. This can also cause accidents while driving under strong sunlight or cruising out on the water.
Polarized sunglasses contain a special filter that blocks out horizontal lights that form glares, and prevents not only sun damage but makes sure your get a clear view at all times. Fishermen also prefer polarized glasses as these lenses increase visibility allowing one to see fish clearly in the sea, once all reflections and glares are eliminated.
Nowadays, all those people who live in countries with harsh summers wear sunglasses with polarized lenses to reduce the eye strain. Another alternative to polarized lenses is a mirrored lens.
This type of lens has a mirror coating on it. Like a regular mirror, mirrored coated lenses, reflect light away from the eyes of the wearer. However mirror coating can get uncomfortable for the companions of the person wearing these lenses, due to the fact that making eye contact is almost impossible in these glasses. They are quite stylish and many people can be seen sporting these. For someone whose profession involves a lot of work under the sun or out cruising the sea, polarized lenses is the way to go, however for others who require sunglasses for everyday use, mirrored lenses are a better option.
The dielectric layer comprises a suitable oxide, e. The manufacturing process is similar to making anti-reflective coating , and mirror and antireflective coatings can be deposited in the same sequence of operations.
Characters in cyberpunk frequently wear mirrorshades, and they are considered a hallmark of the subculture. The Cyberpunk Anthology takes its name from them. Many characters in the cyber thriller movie series, The Matrix exclusively wear mirrored sunglasses, Morpheus in particular.
Another popular icon, especially in the 60s, was the character 'the man with no eyes' from the movie Cool Hand Luke. From Wikipedia, the free encyclopedia. This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. July Learn how and when to remove this template message.
Lorgnette Monocle Pince-nez Scissors-glasses. Retrieved from " https: Articles lacking sources from July All articles lacking sources All articles with unsourced statements Articles with unsourced statements from June Views Read Edit View history.
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