Common specifications for protective lenses in fiber laser welding machines include: diameter (unit: mm) 50*2, 55*1.5, 78*3, 108*4, 133*5, 133.5*4, 134*3. The wavelengths of these lenses are 1064nm, suitable for high-power brazing and spot welding of automotive seats and vehicle bodies, and are applicable to imported fiber laser welding machines.

Note: (Diameters in mm: 25, 27, 30, 38, 39, 40, 48, 50, 55, 75, 78, 123, etc.) Other specifications can be customized.