Hgnova 15pcs D27.9x4.1mm Fiber Laser Protection Lens for Fiber Laser Cutting Head Replacement Parts

• Diameter: 27.9 mm; Thickness: 4.1 mm. Features a high light transmission of 99.5%, allows efficient transfer of laser energy and ensures the continuity and stability of the cutting process, improving cutting quality and production efficiency
• Superior Material Made of imported quartz crystal material, high temperature and corrosion resistance, as well as high laser threshold. This effectively protects the optical precision components in the cutting head while providing exceptional thermal stability, shock resistance and a long service life in continuous industrial operation
• DOUBLE SIDED ANTI REFLECTIVE COATING Specially coated on both surfaces with a high threshold film to minimize reflection loss and resist adhesion caused by cutting process splash/dirt
• UPGRADED SAFETY DESIGN Features a 45° beveled edge that is shatterproof and less prone to chipping or cracking. This rugged design effectively blocks contaminants such as splashes and dust, greatly improves workplace safety and helps avoid damage to equipment or operators
• Practical pack of 15: contains 15 premium protective lenses. Each lens is individually packaged in scratch resistant packaging to avoid damage and ensure cleanliness. It offers ready-to-use replacement parts that minimize costly machine downtime

We offer a wide range of protective window lenses for laser processing heads suitable for both welding and cutting applications. Available specifications include D18 × 2, D20 × 2, D25 × 2, D24.9 × 1.5, D27.9 × 4.1 and D37 × 7 (diameter × thickness, in millimetres)