Double lens element

fused silicaNIRnear-infrared

Description
Maximize the performance of your portable laser welding unit with high-grade focusing lenses designed to withstand high energy densities and deliver an ultra-precise focal spot for deep, clean and structurally consistent welds.

Main technical features

• High transmittance: >99.76% — very high transparency to minimize energy loss and reduce optic overheating.
• Double-sided AR coating: treatment on both faces to reduce reflection losses and protect the lens from back-heating.
• Wavelength optimization: designed for 1064 nm (compatible with 900–1100 nm), ideal for fiber lasers.
• Focal spot precision: concentrates the beam to an extremely small point, ensuring high heat density in the fusion area.

Why choose this lens?

• Consistent weld quality: accurate focal range for stable weld pool across varying thicknesses without performance drops.
• Extended lifetime: high resistance to thermal shocks and a high damage threshold reduce replacement frequency and downtime.
• Wide compatibility: developed for common welding heads such as SUP 20S/T, 21T, 23S/T and SW150.

Usage specifications

• Application: handheld/portable laser welding guns.
• Function: focuses the collimated laser beam onto the work point.
• Material: fused silica substrate for minimal thermal distortion.

FOCAL SIZES (table)
Lens model | Laser spot | Depth of focus | Operator tolerance | Main application
F150 | Very small | Low | Requires precision | Thin sheets, high speed
F200 | Medium | Medium | Good | Standard, thicknesses up to 5 mm
F400 | Large | High | Very good | Wide gaps, irregular parts
F600/800 | Very large | Very high | Maximum | Laser cleaning, large areas

WELDING GUN COMPONENTS (table)
Name | Function
Copper nozzle | Channels the laser beam and shielding gas to the weld point.
Graduated tube / Adjustment collar | Allows millimetric focal position adjustment.
Protective lens | Shields internal optics from spatter and dust.
Focusing lens | Concentrates the laser beam into a very small, powerful spot.
Reflective lens / Galvo | Directs the beam; in 'sway' models used to create oscillating motion.
Wobble motor | Controls beam oscillation for wider welds.
Collimation lens | Makes divergent fiber output rays parallel.
Trigger / Activation button | Controls laser emission (often with a contact safety).
Wire feed bracket | Mechanical support for automatic filler wire insertion.
Water circuits / Gas conduit | Cool the torch (water) and protect the weld pool (gas).
Protective sleeve | Connector protection and fiber optic entry point.

Features / Technical specifications

• Type: focusing lens for portable laser welding guns
• Material: fused silica (Fused Silica)
• Optimization spectrum: 1064 nm (compatible 900–1100 nm)
• Transmittance: >99.76%
• Coating: double-sided AR
• Available focal variants: F150, F200, F400, F600, F800
• Compatibility: SUP 20S/T, SUP 21T, SUP 23S/T, SW150
• Packaging: packs of 5 pcs
• Technical advice: keep the protective window clean and free of dust or spatter to extend service life (a clean lens can increase lifetime by up to 40%).