Laser Cutting Machine Protective Lens D42*T9mm
Ø42 mm × 9 mm fiber laser protective window lens — a precision optical shield that blocks cutting debris and spatter from reaching the internal focusing optics, preserving beam quality and extending head life.
Key Features
• High AR transmission — anti-reflection coating ensures efficient laser energy throughput with minimal losses.
• Thick, rugged design — 9 mm thickness enhances durability under high thermal and power stress.
• Fused silica substrate — low absorption and excellent optical clarity.
• Contamination resistance — reduces buildup on internal optics and extends service intervals.
• Stable focus performance — precise flatness supports consistent cutting quality.
Applications
Used in industrial fiber laser cutting systems to protect critical optics and maintain high-precision cutting performance on metals.
Compatible Cutting Heads
Commonly compatible with fiber laser cutting heads that use 42 mm × 9 mm protective windows, including heads from major OEMs such as Mazak and other industrial laser systems (confirm specific compatibility with OEM documentation before ordering).