Fiber Laser Protective Windows
Protect your focusing optics from spatter, smoke and contamination while maintaining beam clarity.
Lens Protection
High Transmittance
Spatter Resistance
OEM-Compatible Fit
Designed to protect internal laser optics and extend service life in industrial cutting environments.
Protective Windows for Fiber Laser Cutting Applications
Fiber laser protective windows serve as the first line of defense inside a laser cutting head. Positioned above the focusing lens, they prevent molten spatter, smoke, and airborne debris from damaging critical optics during cutting operations.
Machinist's Vault protective windows are manufactured from optical-grade fused silica and feature high-performance anti-reflection coatings optimized for fiber laser wavelengths. This ensures high laser beam transmission while minimizing heat buildup and optical distortion.
Available in multiple diameters, thicknesses, and power ratings, our protective windows are designed for compatibility with a wide range of fiber laser cutting heads used across North America.
All Protective Windows






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