Welding helmets are the without a doubt the single most valuable item a welder has to protect himself. Welding helmets have been around for a long time and the technology has steadily improved. They are much more user friendly and offer far more protection. Still, there are a lot of misconceptions about how a welding helmet actually protects the welder from environmental hazards of their job.
Your average layperson commonly believes a welding helmets primary task is to shield your eyes from the bright lights of a welding arc. Almost like a welding helmet is a pair of super sunglasses. This is only partially true. The lens in the helmet primary job is to filter out ultraviolet and infrared light. The lens is designed to filter out 100% of harmful UV and IR rays from your sensitive eyes. Do not confuse this with whether or not the lens is dark or not. An auto darkening lens will protect the welder from ultraviolet light whether the lens is clear or darkened. It is understandable to think the bright light is the problem because it is visible to the naked eye. The bright light is still damaging to the eye, thats why the welding helmet has a darkened lens or has an auto...
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