What are the preferred colors for sun lenses?

We know that sun lenses block uncomfortable glare while protecting the eyes from UV rays. All thanks to metal powder filters that "select" the light as it hits it. Tinted glasses can selectively absorb some of the wavelength bands that make up the sun's rays because they use very fine metal powders. So, with so many colored sun lenses on the market, which colors do people prefer?

Yellow lenses are the safest choice

In fact, when light hits the lens, it is subtracted based on a process called "destructive interference". That is, when certain wavelengths of light pass through the lens, they cancel each other out on the inside of the lens, towards the eye. The mutual superposition of light waves that forms is not accidental: the crest of one wave joins the trough of the adjacent wave, resulting in mutual cancellation. The phenomenon of destructive interference depends on the refractive index of the lens and also depends on the thickness of the lens. Generally speaking, the thickness of the lens does not vary much, while the refractive index of the lens varies according to the difference in chemical composition. Eye experts pointed out that there is a color that is the most UV-resistant, not black as you usually think, but yellow! If you're only going to buy one pair of sunglasses, yellow lenses are the safest choice, as they provide full UV protection.

Pink lenses that filter 95% of UV rays – a confidence booster

Sunglasses with pink lenses can filter 95% of ultraviolet rays and some visible light with shorter wavelengths. In fact, pink lenses are about the same as ordinary untinted lenses, and the protective effect is no better than ordinary lenses. However, psychological studies have found that 65% of women's self-confidence is more than 10% higher than usual after wearing pink lens sunglasses. Pink sunglasses are a confidence enhancer, which can be worn on rainy days when the mood is depressed or the ultraviolet rays are not strong.

Green lenses, filter 99% of ultraviolet rays - comforting sedative

The trendy green lenses, like the gray ones, filter out infrared light and also block 99 percent of ultraviolet rays. However, green lenses will change the color of some scenes, and the effect of blocking light is slightly worse than gray lenses. Fortunately, green is a natural sedative, which can make people around you feel more comfortable.

Brown lenses, filter 100% of ultraviolet rays - a brightening agent for eyesight

Brown lens sunglasses can filter 100% of ultraviolet rays, allowing infrared rays and 83% of visible light to pass through the lens. Its feature is that it can filter most of the dazzling blue light in the sun. After sunlight passes through the atmosphere, most of it appears as blue light, which is why we see the sky is blue. After the brown lens filters blue light, the natural scenery can be seen more clearly. Therefore, wearing sunglasses with brown lenses while driving can help you see passing vehicles more clearly.