lenses have different functions
Full of beautiful things in eyes of sunglasses on the market at present, how to identify their functions and advantages and disadvantages?Zhen-ping huang, director of the said, when you choose sunglasses, not only consider beautiful, the most fundamental is to guarantee the safety of the wearer and vision is not damage, reduce glare, clear vision and deformation, uv protection, no distortion of color identification, accurate identification of traffic signal lampray ban 4068, etc.
Here, the first to introduce you to the types of sun glasses:
1, the colored lenses: also known as the dyeing lenses, is in the lens production process, and chemicals, let the lens present color, to absorb certain wavelengths of light.This is the most commonly used sunglasses lens type.
2, the color lenses: its effect is the same as the color lenses, only made in different ways, it is the color painted on the surface of the lens, and then gradually down light color on the most.Is more