Briserm Fiber Laser Protective Windows (D30-D40 Series)

These high-purity fused silica laser protective windows are critical spare parts for fiber laser cutting and welding machines. Designed for the 1064nm wavelength, protect your expensive laser optics while maintaining maximum performance.

Key Features & Benefits

High Transmittance: At 1064nm, transmittance exceeds 99.76%, minimizing energy loss and reducing lens self-heating.
Premium Fused Silica Material: Made of high-purity quartz (SiO₂), with a melting point ≥1700℃, excellent for high-temperature resistance.
Durable & Scratch-Resistant: High hardness effectively resists scratches from dust, debris, and splatter, keeping the lens surface smooth.
Superior Thermal Conductivity: Enables rapid heat dissipation, reducing thermal deformation and extending service life.
Low Absorption Rate: Absorption rate <0.1% reduces heating and deformation, preventing performance degradation during long-term use.
Universal Compatibility: Fits Raytools, Precitec, Boci, Bodor, WSX, HSG, and most fiber laser cutting heads.

Product Specifications

Product Type: Fiber Laser Protective Window / Protective Lens
Material: High-Purity Fused Silica (Quartz)
Wavelength: 1064nm (Fiber Laser)
Transmittance: >99.76%
Absorption Rate: <0.1%
Series: D30-D40 (multiple sizes available)
Melting Point: ≥1700℃
Compatibility: Raytools, Precitec, Boci, Bodor, WSX, HSG laser cutting heads