The color of the sunglasses:
Sunglasses with different lenses
Green sheet:
They absorb light while maximizing the amount of green light that reaches the eyes, so they have a cool and comfortable feeling and are suitable for people whose eyes get tired easily. Green lenses, represented by the "Ray-Ban" series, are as effective as gray lenses in absorbing infrared light and 99% of UV rays, but they are slightly less effective than gray lenses in blocking light, however, they are also excellent protective lenses.
Blue-gray lenses:
Similar to gray lenses, they are neutral lenses, but darker and have a higher absorption rate of visible light.
Mercury lenses: lenses with a high density mirror coating. These lenses absorb more visible light and are suitable for outdoor sports people.
Light blue and light red lenses are also more decorative than practical.
Yellow lenses:
Strictly speaking, these lenses are not sunglasses because they hardly reduce visible light, but in foggy and twilight hours, yellow lenses can improve contrast and provide more accurate visual images, so they are also called night vision lenses. Some young people wear yellow lenses "sunglasses" for decorative purposes.
