a smoke-free tinted sunglasses

They dream of sunglasses blobs in the nineteen sixties, when Foster Grant launched an effective advertising campaign, using the well-known when you want and still Hollywood stars as an example, to make his sunglasses as a fashion pop culture icon appear chic and encourages people to buy them. However, the concept of looking through the colored lenses can be traced back to the nineteen sixties far more than Foster Grant's and the 70's boom. On the contrary, its history can be traced back to 1430 BC in china.
Failed to create a Chinese sunglasses to protect their eyes from the sun's harmful rays or glare, the judicial system but are used in china. The smoke is used to color quartz lenses, then they built a smoke-free tinted sunglasses, wear for hundreds of years, the Chinese judge. Wearing sunglasses to hide any eye, the judge can use, because of the need of the judge's opinion, assessments of the evidence is still a secret, until the trial is over. Some people think that the smoke tainted glasses cover eyes of the judges, so his thoughts and opinions of the secret to achieve this feat. On or about 1430, China introduced the Italy vision correction glasses. These sunglasses colored, but it is mainly about the purpose of judicial affairs.
In the middle of the eighteenth Century scientists pursue, blue and green colored contact lenses can be corrected vision problems. But, in fact, it was not until twentieth Century, sunglasses came to be seen as a way of influencing, protects eyes from the harmful rays of the sun. For this purpose, the United States Army to a great role in the development of their sunglasses, contract in 1930, and a big thing, Bausch & Lomb lamb design, will protect the pilot from a high altitude. In addition, created from the Polaroid Edwin Rand and implemented using a polarizing filter, in order to reduce the harmful rays reach the more delicate eye of opportunity.