Knowledge

Protective measures for sunglasses

No matter where you store your sunglasses, remember to keep the mirror facing up.

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Common sense of sunglasses

Sunglasses wear improper easy to suffer from eye diseases, cloudy days, indoor dark light, there is no need to wear sunglasses.

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Advantages of Sunglasses

It can reduce the adjustment burden of the ciliary muscle of the eye under strong light.

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Sunglasses logo

For the requirements of the logo, each pair of glasses should be marked with the implementation of the standard code (QB2457, etc.), category (sunshad

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The color limit of sunglasses

If the measured color coordinate value exceeds the specified color limit area, it will lead to confusion of various traffic signals, which is one of t

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The average transmittance of sunglasses

In the UVA band of 315nm ~ 380nm, the average transmittance τSUVA should be ≤τV.

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The transmittance of the sunglasses

For light-colored sunglasses, the light transmission ratio should be >40%; For the sunshade mirror, the light transmission ratio ranges from 8% to 40%

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Uv protective sunglasses

One of the causes of some of the most serious eye diseases is ultraviolet light. Depending on the frequency and wavelength, ultraviolet light is divid

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Anti-reflection of sunglasses

A common problem with sunglasses is rear glare, which is caused when light hits the back of the lens and then reflects back into your eyes.

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The mirror reflection of sunglasses

The lenses of reflective sunglasses reflect light like a mirror. The lens is coated with a very thin layer of reflective paint - because this coating

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The polarizing light of sunglasses

Light waves from artificial sources such as the sun and even light bulbs vibrate and propagate in all directions.

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Tinted lenses for sunglasses

The color of a sunglasses lens determines which parts of the middle spectrum the lens can absorb. Manufacturers use different colors to produce specif

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