D50 ET8 Protective Window 30 kW for Fiber Laser Cutting Heads

50 × 8 mm protective lens for fiber laser cutting rated up to 30 kw. an ar-coated fused silica window that shields the lens stack from process debris and reduces unplanned cleaning stops.

size:

• diameter (d): 50 mm
• thickness (et): 8 mm
• pack: 1 × protective window

spec:

• ar-coated for fiber laser wavelengths to reduce reflection and power loss
• power handling: 30 kw with a properly maintained head
• thick 8 mm window for high-power heads and higher gas pressure
• precise thickness and surface flatness for stable cutting performance

material:

• optical-grade fused silica
• low bulk absorption keeps the window cool in the beam path
• ar-coated surfaces to minimise reflection losses

use:

• protective window in fiber laser cutting heads
• shields the focus lens from dust, fumes and metal spatter
• keeps cut quality consistent between maintenance intervals
• high-power cutting of thick plate on 30 kw+ sources

compatibility:

• for fiber laser cutting heads that use round d50 mm × et8 mm protective windows
• also available in a 60 kw version in the same size; choose the class that matches your laser source
• measure your existing window before ordering; diameter and thickness must match

quality:

• diameter and thickness tolerance checked per batch
• coating inspected for uniformity
• individually wrapped to protect the optical surfaces