K4708-1 - Lincoln Electric Shade 5 IR Safety Goggles for Cutting & Grinding

Technical Overview of Lincoln K4708-1 Shade 5 Goggles

The Lincoln Electric K4708-1 Shade 5 Compact Goggles are engineered to provide rigorous eye protection in industrial environments involving thermal cutting and grinding operations. These goggles feature a high-impact green polycarbonate lens that is certified to IR 5.0 standards, making them specifically suitable for reducing the intensity of visible light and infrared radiation generated during oxyfuel and plasma cutting processes. The lens allows for a Visual Light Transmittance (VLT) of 2%, ensuring adequate visibility of the workpiece while protecting the user's vision from glare.

Constructed with a focus on durability and optical clarity, the lens is treated with a dual-coating system. The exterior surface features an anti-scratch coating to withstand abrasive environments, while the interior is treated with an anti-fog coating to maintain clear vision in varying humidity and temperature conditions. The unit meets or exceeds ANSI Z87.1+ and CSA Z94.3 standards for high-velocity impact protection, ensuring reliability in heavy-duty manufacturing and fabrication settings.

Ergonomically, the K4708-1 utilizes a soft internal Thermoplastic Rubber (TPR) seal. This seal serves a dual purpose: it effectively blocks ambient light and airborne debris from entering the eye cavity, and it distributes pressure evenly across the face to reduce fatigue during extended wear. The retention system consists of an adjustable elastic headband attached via a rotatable connection point, allowing the goggles to sit securely and comfortably on a wide range of head sizes and shapes. Additionally, the lens provides 99.9% protection against UV-A, UV-B, and UV-C radiation up to 380nm.