Welding lenses filter intense levels of infrared light that is produced during gas welding, brazing, torch cutting, etc. These green-tinted welding lenses provide protection from UVC rays, which are the most harmful of the ultraviolet spectrum. Exposure to high levels of this light without proper lens filtration can result in photokeratisis, often referred to as "welder's flash."
IR3 lenses allow 12% of light to enter the lens are intended for low levels of infrared light. IR5 allow only 2% of light to pass through, protect against medium levels of infrared light.
Caution: Do not use these lenses for high levels of ultraviolet radiation.
Edge Eyewear IR3 and IR5 lenses are available in the Zorge (shown above) and Dakura.
