Link Metal CNC Focusing Lens for Fiber Laser Welding & Cutting Machines

Focusing Lens for Fiber Laser Welding & Cutting Machines 1064nm

Professional high-precision optical focusing lenses specially designed for mainstream fiber laser cutting machines, welding machines and handheld laser welding torches. As the core optical component of the laser head, it concentrates the parallel laser beam into a tiny high-energy focal spot, achieving high-precision, high-quality cutting and welding effects.

Made from premium fused silica material with advanced anti-reflection coating, these focusing lenses provide stable performance, excellent anti-spatter properties and long service life. Available in both single piece and composite 2-piece structures to meet different equipment and processing requirements.

Key Advantages of Our Fiber Laser Focusing Lenses

• 1064nm Standard Wavelength: Optimized exclusively for 1064nm fiber laser radiation. High light transmittance ≥99.5%, ensuring stable laser output and excellent processing effect.
• Premium Fused Silica Material: Crafted from high-grade fused silica quartz. Features high temperature resistance, superior scratch resistance and excellent anti-spatter performance.
• Two Optional Structures: Available in single piece and composite 2-piece designs. Composite lenses provide better thermal stability and higher damage threshold for high-power applications.
• Precision Machined Dimensions: High-precision CNC machining with strict size tolerance control. Perfect fit with most original laser heads, no additional debugging required after replacement.
• Advanced Anti-Reflection Coating: Double-sided hard anti-reflection coating effectively reduces light loss and improves laser energy utilization rate by up to 15%.
• Universal Compatibility: Compatible with most mainstream fiber laser brands including Precitec, Raytools, WSX, Qilin, Hanwei and more.
• 40+ Standard Specifications: Complete range of diameters, focal lengths and structures available, covering all common laser cutting heads and handheld welding torches.

Compatible Equipment & Available Models

Compatible Equipment

• All Handheld Fiber Laser Welding Torches
• All Mainstream Fiber Laser Welding Machines
• All Fiber Laser Cutting Machines
• All 1064nm Fiber Laser Processing Equipment

Available Focusing Lens Models

Single Piece Structure

• D20 F120 CT3.5 ET2.6: 20mm diameter, 120mm focal length. For handheld welding machines.
• D20 F125 T4: 20mm diameter, 125mm focal length. For handheld welding machines.
• D20 F150 CT4.5 ET3.8: 20mm diameter, 150mm focal length. Most popular for handheld welding.
• D20 F200 CT4.5 ET3.9: 20mm diameter, 200mm focal length. For handheld welding machines.
• D20 F250 CT4.5 ET4.1: 20mm diameter, 250mm focal length. For handheld welding machines.
• D20 F300 CT4.5 ET4.1: 20mm diameter, 300mm focal length. For handheld welding machines.
• D20 F400 CT4 ET3.7: 20mm diameter, 400mm focal length. For handheld welding machines.
• D20 F500 CT3.3 ET3.1: 20mm diameter, 500mm focal length. For handheld welding machines.
• D20 F800 CT3.5: 20mm diameter, 800mm focal length. For Chaoqiang Weiye laser cleaning machines.
• D25.4 F75: 25.4mm diameter, 75mm focal length.
• D25.4 F125: 25.4mm diameter, 125mm focal length.
• D25.4 F150: 25.4mm diameter, 150mm focal length.
• D28 F100: 28mm diameter, 100mm focal length.
• D28 F125: 28mm diameter, 125mm focal length.
• D28 F150: 28mm diameter, 150mm focal length.
• D30 F80 T4.5: 30mm diameter, 80mm focal length. For handheld welding machines.
• D30 F120 CT4.5 ET2.38: 30mm diameter, 120mm focal length. For handheld welding machines.
• D30 F150 CT4.5 ET2.8: 30mm diameter, 150mm focal length. For handheld welding machines.
• D30 F200 CT4.5 ET3.24: 30mm diameter, 200mm focal length. For handheld welding machines.
• D30 F250 CT4.5 ET3.5: 30mm diameter, 250mm focal length. For handheld welding machines.
• D30 F300 CT4: 30mm diameter, 300mm focal length. For handheld welding machines.
• D30 F300 CT4.5 ET3.65: 30mm diameter, 300mm focal length. For handheld welding machines.
• D30 F400 CT4.5 ET3.88: 30mm diameter, 400mm focal length. For handheld welding machines.
• D30 F500 CT3.6 ET3.09: 30mm diameter, 500mm focal length. For handheld welding machines.
• D30 F600 CT3.6 ET3.17: 30mm diameter, 600mm focal length. For handheld welding machines.
• D38.1 F100: 38.1mm diameter, 100mm focal length.

Composite 2-Piece Structure

• D28 F75: 28mm diameter, 75mm focal length. Composite 2-piece design.
• D28 F100: 28mm diameter, 100mm focal length. Composite 2-piece design.
• D28 F125: 28mm diameter, 125mm focal length. Composite 2-piece design.
• D28 F150: 28mm diameter, 150mm focal length. Composite 2-piece design.
• D30 F75: 30mm diameter, 75mm focal length. Composite 2-piece design.
• D30 F100: 30mm diameter, 100mm focal length. Composite 2-piece design.
• D30 F125: 30mm diameter, 125mm focal length. Composite 2-piece design.
• D30 F150: 30mm diameter, 150mm focal length. Composite 2-piece design.
• D30 F155: 30mm diameter, 155mm focal length. Composite 2-piece design.
• D30 F200: 30mm diameter, 200mm focal length. Composite 2-piece design.
• D37 F100 (Precitec): 37mm diameter, 100mm focal length. For Precitec laser heads.
• D37 F100 (Raytools/WSX): 37mm diameter, 100mm focal length. For Raytools/WSX laser heads.
• D37 F125: 37mm diameter, 125mm focal length. Composite 2-piece design.
• D37 F150 (Precitec): 37mm diameter, 150mm focal length. For Precitec laser heads.
• D37 F150 (Raytools/WSX): 37mm diameter, 150mm focal length. For Raytools/WSX laser heads.
• D37 F200 (Precitec): 37mm diameter, 200mm focal length. For Precitec laser heads.
• D37 F200 (Raytools/WSX): 37mm diameter, 200mm focal length. For Raytools/WSX laser heads.
• D38.1 F200 (Raytools): 38.1mm diameter, 200mm focal length. For Raytools laser heads.

Custom Specifications Available: For non-standard sizes, special coatings or custom focal lengths, please contact our sales team directly for personalized solutions.

Detailed Technical Specifications

Package Contents

• 1 x Selected Fiber Laser Focusing Lens
• 1 x Specialized Anti-Static Protective Packaging

Quality Assurance

All fiber laser focusing lenses from Link Metal CNC undergo strict quality testing before delivery, including transmittance test, surface quality inspection, dimensional accuracy verification and focal length measurement.

We maintain strict ISO 9001 quality control standards to ensure stable and reliable product performance. All our products come with professional pre-sales consultation and comprehensive after-sales support.

Frequently Asked Questions

Q: What is the difference between single piece and composite 2-piece focusing lenses?
A: Single piece lenses are simpler in structure and more cost-effective, suitable for low to medium power applications (<3000W). Composite 2-piece lenses consist of two optical elements cemented together, providing better thermal stability, higher damage threshold and superior optical performance. They are recommended for high-power applications (>3000W) and demanding production environments.

Q: How do I choose the correct focusing lens for my laser head?
A: You need to match the exact diameter, focal length, center thickness, edge thickness and structure type of your original lens. The easiest way is to check the part number on your old lens or refer to your laser head manual. You can also contact our sales team with your laser head model for assistance.

Q: How does focal length affect laser processing?
A: Shorter focal lengths produce a smaller focal spot and higher power density, ideal for thin material cutting and precision welding. Longer focal lengths provide a deeper depth of field, better for cutting thicker materials and welding larger joints. Always match the focal length to your specific application requirements.

Q: How often should I replace the focusing lens?
A: Under normal operating conditions, a focusing lens should last 2-4 months. However, it should be replaced immediately if you notice any film burning, scratches, spatter damage or if welding/cutting quality deteriorates. Regular cleaning and proper maintenance can extend its service life.

Q: Can I clean the focusing lens?
A: Yes, you can clean slightly contaminated lenses using proper techniques. Always wear clean gloves and use a blower ball first to remove loose dust. Then gently wipe with a lint-free microfiber cloth and lens cleaning fluid. Never use regular paper towels or tissues as they will scratch the coating.

Also available: Fiber Laser Collimating Lenses for complete laser head maintenance.

View our full range of laser cutting accessories including protective lenses, nozzles, ceramic rings and more.