Laser Cutting Machine Protective Lens D21.5×2mm
Protective lens D21.5×2 mm for fiber-laser cutting heads. Premium fused silica. High transmittance. Stable performance under long-term high-power cutting. Designed for industrial metal-processing environments.
Features
• High-purity fused-silica substrate; low absorption; stable at high temperature.
• Double-sided anti-reflection coating; reduced light loss; consistent cut quality.
• Precision-ground surface; tight flatness; minimal scattering.
• Durable against smoke, spatter, and debris during stainless steel, carbon steel, and aluminum cutting.
• Dimensional accuracy ensures reliable sealing with most mainstream laser heads.
Advantages
• Extends the working life of collimating/focusing lenses.
• Reduces downtime and part-replacement frequency.
• Maintains consistent beam transmission for cleaner edges and lower burr.
• Enables stable high-power cutting 10KW & 15KW 20KW.
• Low cost per cycle; suitable for continuous industrial workloads.
Protective Lens Applications
Used in fiber-laser sheet-metal cutting, tube cutting, automation cells, and OEM industrial equipment. Suitable for carbon steel, stainless steel, galvanized sheet, aluminum, brass, and mixed-material fabrication lines. Supports cutting of thin to thick plates with steady beam protection.
Compatible brands and cutting heads
Works with Raytools
BOCI BLT421 BLT441 BLT461 BLT481 BLT421T BLT441T
WSX/NH series, Precitec Procutter1.0 12kw 15kw, Au3Tech, OSPRI, and equivalent D21.5×2 mm protective-lens assemblies. Compatibility based on standard dimensions used in 1–20 kW laser systems.