Laser Cutting Machine Protective Lens D25.4×4mm for 8kw 15kw 20kw
The D25.4×4mm protective lens is engineered for high-power fiber laser cutting systems operating at 8kW, 15kW, and 20kW. Built from premium fused silica with advanced anti-reflection coatings, it provides stable optical performance, safeguards core optics, and ensures consistent cutting quality under demanding industrial conditions. This consumable lens is an essential component for maintaining efficiency, extending system longevity, and reducing downtime in high-power metal fabrication environments.
Features
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25.4mm diameter, 4mm thickness, optimized for 8–20kW fiber laser cutting
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High-purity fused silica for excellent thermal resistance
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Dual-side AR coating for high transmission and reduced laser loss
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Anti-spatter and anti-contamination surface treatment
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Stable optical performance under long-term continuous operation
Advantages
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Extends the service life of focusing lenses and cutting heads
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Reduces maintenance frequency and consumable cost
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Ensures consistent cutting accuracy at high power
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Minimizes optical contamination from smoke, dust, and metal particles
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Improves overall system uptime and production efficiency
Protective Lens Applications
The D25.4×4mm protective lens is suitable for high-power fiber laser cutting applications across industries such as sheet metal fabrication, machinery manufacturing, automotive parts, aerospace components, construction steel, and precision metal processing. It is ideal for cutting carbon steel, stainless steel, aluminum, copper, and high-reflective metals used in industrial production.
Compatible brands and cutting heads
Works with Raytools
BOCI BLT421 BLT441 BLT461 BLT481 BLT421T BLT441T BLT642H BLT662H BLT682H BLT6102H
WSX series, Precitec LightCutter-type heads, Au3Tech, OSPRI, and any laser head requiring D25.4×4 mm protective lenses. Widely used on 1 kW–20kW fiber-laser platforms across industrial workshops.