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fused silica quartz protective lens d25 d20 d30 t20mm 1064nm ar coated for relfar fiber laser welding head-7

for Laser Welding Head

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Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head
Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head
Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head
Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head
Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head
Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head
Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head
Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head

Fused Silica Quartz Protective Lens D25 D20 D30 T2.0mm 1064nm AR Coated for Relfar Fiber Laser Welding Head

Product Name: Protective Window/Lens

Dimension: D25mm D20mm D30mm T2.0mm

Coating: AR/AR 1064nm

Material: Fused Silica

Application: Relfar Laser Welding Head up to 3000w

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About Product

Highlight

High Purity Fused Silica Substrate Engineered with premium JGS1 quartz material for exceptional thermal resistance and durability, ensuring stable performance under continuous high-power laser welding operations.
AR/AR@1064nm Dual Side Anti Reflective Coating Both surfaces feature precision AR coating optimized for 1064nm wavelength, delivering >99.5% transmittance to minimize energy loss and maximize welding efficiency.
Precision-Machined OEM Fit with 45° Chamfered Edge CNC machined to exact D25x2.0mm specifications, featuring a 45° (0.3~0.8mm) chamfered edge for seamless drop-in replacement - fully compatible with Relfar handheld laser welding heads.
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Quick Tips

  • The protective lens is a consumable: replace it as soon as burn marks, spatter spots or contamination appear — do not wait until the focusing lens is affected.
  • Clean with pure isopropyl alcohol and an optical cloth, wipe center to edge, never touch the glass.
  • Welding aluminum or galvanized steel? Use minimum power, strengthen shielding gas, and check the lens more frequently.

How to Choose the Right Size

Size Typical use
18×2 mm Compact handheld heads, 1–1.5 kW class
20×2 mm Q-head (dual wobble), most common, 1.5–2 kW class
20×3 / 20×4 mm Standard heads — thicker, longer service life
30×5 mm High-power / large-aperture heads, 3 kW and above

Confirm the size from your old lens or the lens seat inner diameter, and select the grade matching your machine's power output.

FAQ 

Q: How do I know which size my torch needs? 

A: Check the old lens — the size is marked as diameter × thickness (e.g., 20×2). Or measure the inner diameter of the lens seat with a caliper.

Q: Can it be used on different torch brands? 

A: Yes. Lenses of the same size can be used across torch brands within the same power range; for different power levels, choose the corresponding power-rated grade.

Q: How often should it be replaced? 

A: It depends on material and gas protection — every few hours in heavy aluminum/galvanized welding, days or longer in clean conditions. Replace at the first sign of burn marks.

Q: Do you offer OEM / wholesale? 

A: Yes. OEM/ODM and bulk supply are available — contact us for pricing and lead time.

Contact us for MOQ, pricing and shipping. We also supply matching focusing lenses and complete torch spare parts — one-stop for your welding consumables.

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