"Anti blue light is about filtering out blue light that hurts the eye. Optically and chromatically, it is clear that the color of the lens after filtering out blue must be its complementary color, yellow. However, there are also many transparent and blue anti blue light lenses on the market. What is the difference?"?

Transparent blue light glasses resistant lenses are actually standard UV resistant lenses. Because UV rays are invisible, their complementary colors cannot be seen. This type of lens is most commonly tested using blue light like purple light, which makes it difficult to distinguish between purple and blue light; Blue anti blue light glasses lenses are actually anti blue light lenses, which are coated with a high reflectivity blue light coating on the surface of the lens. In theory, it is intended to reflect off the blue light from the outside to achieve an improved effect, but in fact, the light reflection is bidirectional, so there is also equivalent blue light reflection on the side of the human eye facing the lens. Many people complain that blue light glasses are uncomfortable and have a strong light shadow, which is this type of blue light glasses lens, This kind of lens also has the function of preventing ultraviolet rays. When consumers buy this kind of lens, it does not protect their eyes, but rather hurts them even more. Therefore, we call it enhanced blue light lenses.