useful keep the sun's brightness

In the early days, sun glasses useful keep the sun's brightness. A smoky quartz held hands, then at the face block, they have little real today, they have become fashion accessories. However, with the invention of polarized lenses, by Edwin H. land, sunglasses keeps the sun blocking harmful ultraviolet rays, keep us healthy vision. To understand what is polarized lenses, we need to understand how the work of polarized sunglasses.
In the army came to a Uni Airways Corporation in 1930, as everyone knows, Bausch & Lomb, anti-glare Aviator Sunglasses research and development. They came up with a design frame to maximize shielding the pilot's eyes slightly drooping. They then incorporated into the dark green color, the absorption spectra with yellow. Centralized light dark green color filter and diffusion, thereby eliminating the reflected glare 99%. The final result is less annoying and / or dangerous glare.
It is from the polarizer, a surface with a vertical orientation of the lens is integrated into the working principle of polarized lens horizontally polarized light the way, to help you. Is still water, the road smooth, even the surface of the glass and metallic luster, such as to reflect the amount of light entering the eye, which makes it difficult to focus on the surface and its surrounding objects. This will distract, or even can not see the bright lights become hidden behind the project. The use of Polarized Sunglasses eliminates glare bounce your sunglasses, so you really see the glare.
Polarized lenses, may sometimes adverse reactions generally exists in the dashboard or automatic teller machines in bank LCD (liquid crystal display) lighting. In fact, in the LCD display screen display angle, can become almost invisible. Of course, this is required before sitting behind the wheel of your car you want, should be explored.