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.