Optical Class (1/1/1/1 Rating)

Optical class measures the visual quality of an auto-darkening welding lens, rated across clarity, diffusion, consistency, and angle dependency. The best rating is 1/1/1/1 , indicating minimal distortion and clearer vision. Lower ratings may cause blur or eye strain. Why it matters: A higher optical class improves weld pool visibility, reduces fatigue, and makes helmets safer and easier to use. Buyers often overlook this specification when comparing helmets