The Importance of Eye-cat Big Frame Sunglasses:
1. Sunglasses, also known as sunglasses, are used for shading. People usually adjust the luminous flux by adjusting the pupil size in the sun. When the light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye.
2. Therefore, in outdoor activity places, especially in summer, sunshades need to be used to block the sun, so as to reduce the fatigue caused by eye adjustment or the injury caused by strong light stimulation.
3. Sunglasses can block the uncomfortable strong light and protect eyes from ultraviolet rays. All this is due to metal powder filtration devices, which can"select"light when it enters. Colored glasses can selectively absorb part of the wavebands that make up the sunlight, It is because it uses very fine metal powders (iron, copper, nickel, etc.).
4. In fact, when light shines on the lens, the light is reduced based on the so-called"destructive interference"process. That is, when the light of certain wavelengths (this refers to ultraviolet A, ultraviolet B, and sometimes infrared) when passing through the lens, they will cancel each other on the inner side of the lens, that is, towards the eye. The overlapping of light waves is not accidental: the peak of a wave and the trough of the wave close to it will cancel each other.
5. The cancellation interference phenomenon depends on the refractive index of the lens (that is, the deviation degree of light passing through different substances from the air) also depends on the thickness of the lens. Generally speaking, the thickness of the lens does not change much, while the refractive index of the lens varies according to the difference in chemical composition. Moreover, sunglasses cannot directly contact the sun.

You can wholesale high-quality Eye-cat Big Frame Sunglasses in bulk from Wenzhou Focus suppliers and manufacturers in China. Shop now.

Specifications of Eye-cat Big Frame Sunglasses:

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