Sunglasses, also known as sunshades, are used for sunshade. People usually adjust the pupil size to adjust the luminous flux in the sun. sunglasses manufacturer When the light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye.
Therefore, in outdoor activities, especially in summer, it is necessary to use sunshade mirrors to block the sun, so as to reduce the fatigue caused by eye adjustment or the damage caused by strong light stimulation.
Sunglasses block unpleasant glare, while protecting your eyes from UV rays. All thanks to metal powder filters that "select" light as it hits. Tinted glasses can have Selectively absorbs some of the wavelengths that make up the sun's rays because it uses very fine metal powders (iron, copper, nickel, etc.). In fact, when the light hits the lens, based on the so-called "destructive interference" process, the light was reduced
