There are many types of safety glasses, including dust-proof glasses, anti-impact glasses, anti-chemical glasses, and anti-light radiation glasses. The first three kinds of glasses seem to be colorless glass, but in fact, due to different protective effects, the characteristics of the lenses are obv......

Children’s sunglasses are designed to protect the eyes from strong light or invisible harmful ultraviolet rays.

1. The damage to the skin is different: UVA has strong penetrating ability, but UVB is not easy to ignore because of its high energy and (UVB) damage to the skin is also great. Polarized light damages the skin weakly. 2. Different penetrating power:

Optical glasses is a general term for glasses developed by using optical principles around us. Common optical glasses include concave lenses, convex lenses, prisms, and what are some common contact lenses. These types of glasses are what we often call optical glasses. They play a very important role......