The fiber laser protective window is made of special industrial technology glass quartz made of silica, which has high-temperature resistance, corrosion resistance, low thermal expansion coefficient, thermal shock resistance, good electrical insulation performance, and good thermal stability.First, check the surface of the laser protection lens to see the smoothness of the surface. When installing the laser protection lens, pay attention to the edge of the lens with your fingers and thumbs to ensure that the lens installed in the laser cutting head is clean.Both sides of the protective laser lens are coated with an anti-reflection film to reduce high damage to reduce the loss caused by reflection. The double-sided anti-reflection film processed is section, rounded, polished, polished, and coated. It has stable performance and is durable.