This is a very common color. It absorbs 95% of UV light and some shorter wavelengths of visible light. In fact, such a function is similar to a generally uncolored lens, which means that the pink lens does not have a greater protective effect than a general lens. But for some people, there is still a lot of psychological help, because they feel comfortable to wear.
It absorbs infrared light and 98% of UV rays. The biggest advantage of gray lenses is that they don't change the original color of the scene due to the lens. The most satisfying thing is that it can effectively reduce the light intensity.
This type of lens absorbs light in much the same way as a green lens, but absorbs more blue light than a green lens. The brown lens causes the color to be distorted more than the gray and green lenses, so the average person's satisfaction is also low. But it offers a choice of colors, and can reduce the halo of the blue light to make the image clearer.