Laser Protective Window

Item No: P20W4Y7601

Laser protective windows are used to protect from material splatter during laser cutting, laser welding, and laser engraving etc.. The substrate of the window is normally JGS1 or Fused Silica(FS). The protective window which will be used at laser cutting head to protect the focusing lens in case of damage. We can provide any wavelength anti-reflection coating according to customer demand, BK7, Ge and ZnSe are also available.


  • Material: BK7, Fused Silica, Sapphire, ZnSe, ZnS, Ge, Si, LT, LN etc..
  • Dimension: 1.0mm-460mm
  • Thickness: 0.1mm-30mm
  • Surface Accuracy: lambda/20
  • Surface Quality: 10-5
  • Tolerance: +/-0.01mm
  • Parallelism: 30″
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    Additional Information

    Laser protective window is mainly used in laser cutting to prevent debris splash to damage the lens.coated with high damage threshold (>15J/cm2) anti-reflection coating to reduce the reflection,is now widely used in optical cutting, laser marking and other applications.

    Since the cost of the lenses used in fiber laser cutting machines which have become widespread in recent years, is high, it is aimed to increase the lifetime of the lenses with laser protective windows. Therefore, the consumed product in fiber laser cutting machines are laser protective windows. The transmittance characteristics of these windows directly affect the cut quality.You can improve your cutting quality and provide full protection to the lens of your machine by means of laser protection windows made of silica based material for fiber lasers manufactured by VY Optoelectronics Co.,Ltd.
    The substrate of the window is normally Fused Silica(FS), or K9 glass. We can provide any wavelength antireflection coating according to customer demand, BK7, Ge and ZnSe are also available.

    Features of our Laser Protective Glass

    1) Waveband: 1064nm, 1080nm, 10.6μm, 980nm, 808nm,532nm, 355nm
    2) Coating: mainly AR coating, no energy loss, high Laser damage threshold;
    3) Function: Laser cutting of metal at 1064nm,10.6μm
    4) Merit: high temperature resistance and transmittance, low loss rate;Imported fused silica substrate, K9 double-sided coated broadband AR coating, resistant to high laser damage threshold, resistant to high laser power of 6000-10000W

    Basic parameters of laser protection window

    • Diameter: 20-150mm (Customized)
    • Thickness: 1-9mm (Customized)
    • Dimension tolerance:+/-0.1mm
    • Protective Chamfer
    • Average Transmission >99.5%
    • Incident Angle: 0+/-5 degrees
    • Surface quality: 40/20
    • Coating: AR coating on both sides with high threshold

    Normal size of Laser co2 laser protective window we produced usually, special dimension can be also customized as per your request.

    Laser Protective Windows
    MaterialDiameter (mm)Thickness(mm)
    Fused Silica20.002.00
    Fused Silica20.003.00
    Fused Silica22.354.00
    Fused Silica24.901.50
    Fused Silica25.404.00
    Fused Silica25.405.00
    Fused Silica26.505.00
    Fused Silica28.004.00
    Fused Silica30.001.50
    Fused Silica30.002.00
    Fused Silica30.004.00
    Fused Silica30.005.00
    Fused Silica29.704.70
    Fused Silica34.003.00
    Fused Silica34.005.00
    Fused Silica35.004.00
    Fused Silica36.002.00
    Fused Silica36.005.00
    Fused Silica37.007.00
    Fused Silica40.002.00
    Fused Silica40.005.00
    Fused Silica38.101.50
    Fused Silica20.005.00
    Fused Silica25.002.00
    Fused Silica25.003.00
    Fused Silica27.005.00
    Fused Silica30.003.00
    Fused Silica32.004.00
    Fused Silica35.001.50
    Fused Silica38.002.00
    Fused Silica38.003.00
    Fused Silica38.005.00
    Fused Silica38.006.00
    Fused Silica38.007.00
    Fused Silica42.009.00
    Fused Silica45.003.00
    Fused Silica48.002.00
    Fused Silica60.003.00
    Fused Silica75.002.00
    Fused Silica80.002.00
    Fused Silica98.002.00
    Fused Silica105.003.00
    Fused Silica134.003.00

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