Laser Safety Welders Helmet - Fiber Laser Welding - Shade 5

lens on the helmet blocks preview / pilot laser...

All handheld laser welders have a preview laser for the welding width and location of the laser while not welding. This lens blocks that laser as well. Without seeing that preview laser it's almost impossible to weld. They should have thought this through before using a lens that blocks basically all laser wavelengths.