How to choose the right sunglasses

- Jan 08, 2019-

It is reported, sunglasses differs according to use, can divide sunshade lens, light color sunglasses and special use sunglasses;According to the transmission ratio category, it can be divided into 1, 2, 3 and 4 categories.The purpose and transmittance of visible spectrum range vary with the classification.

If the transmission ratio is too large, it means that too much light passes through, which has little shielding effect on sunlight (the range of visible light) and cannot protect the eyes.The transmission ratio is too small, indicating that the light through is too weak, blocking too much sunlight (the range of visible light), resulting in blurred vision, unable to see the object in front of, easy to cause accidents.

Expert reminds: buy the sunglasses with complete mark, choose the sunglasses of polarizing lens as far as possible, lens of good polarizing sunglasses can block 99% above ultraviolet ray, consumer can choose to contain "UV400" the polarizing sunglasses of protective