Welding helmets and helmet assemblies cover a welder's face to protect against sparks, extreme heat, flash burns and retina burns caused by UV and infrared light. Welding helmet assemblies include a shroud, which covers the welder's neck and upper torso, and a welding helmet. Welding helmets have large viewings lenses that can be passive or auto-darkening. Auto-darkening lenses automatically adjust in the presence of UV and infrared light. They improve visibility and protect the welder from retina burns and vision loss.