Hot Sale Green Frame Ladies Eye-cat Sunglasses

Green Frame Ladies Eye-cat Sunglasses
Why we should wear sunglasses to protect our eyes:
1. High-quality sunglasses are very effective"light regulators". Sunglasses can adjust external light to make them suitable for human eyes. 
2. Various techniques used by Sunglasses manufacturers to adjust light will be introduced. In order to better understand these technologies, we must first understand some knowledge about light.
3. A beam of light has a certain amount of electromagnetic energy. The size of a wave is measured by its wavelength. The wavelength range of visible light is 400 to 700 nm. The energy of a light wave is inversely proportional to the wavelength.

4. The shorter the wavelength, the higher the energy. In visible light, purple light has the largest energy and red light has the smallest energy, while ultraviolet light is above the visible light spectrum. In fact, natural light contains a lot of ultraviolet light. Due to the high energy of ultraviolet rays, ultraviolet rays can damage your cornea and retina. What is glare?
5. The unit of measure of brightness or intensity of light is the lumen. For example, indoors, most artificial light has an intensity of 400 to 600 lumens. If you are outdoors in the sunshine, the brightness will fluctuate in a large range.
6. The brightness in the shade is 1000 lumens, while in places with large areas of cement, such as highways, the brightness is 6000 lumens. Below the brightness of 3500 lumens, we all feel very comfortable. When the brightness of direct light or reflected light reaches 4000 lumens, it becomes difficult for the human eye to receive light. When we try to look at these bright areas, we only see white flashes, which is glare. In order to reduce the discomfort caused by a large amount of light entering our eyes, we began to squint.

7. Once the brightness reaches 10000 lumens, your eyes begin to completely filter out the light because the light received is too strong. Exposure to such strong light for too long will cause damage and lead to temporary or even permanent blindness. On a sunny day, the brightness of the light reflected by a large area of snow can be as high as 12000 lumens. If we look directly at these lights without any protective measures, it will lead to"snow blindness".
Visible light is light that can be perceived by the human eye.
8. The visible light we see from the sun looks colorless, which is what we often call white light. In fact, it is a mixture of colored light with multiple frequencies. The light mixed by all colored light within the spectrum of visible light is colorless, that is, white.
9. Therefore, people will attach much more importance to sunglasses. Welcome you to wholesale Green Frame Ladies Eye-cat Sunglasses in bulk at a factory price from Wenzhou Focus supplier and manufacturer in China. Contact us now.

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Specifications of Green Frame Ladies Eye-cat Sunglasses: