WELLDING LENS D20*4.5F150

About WELLDING LENS D20*4.5F150

A D20 4.5 F150 lens is a fiber laser focusing lens used in laser welding, laser cutting, and cleaning machines. It focuses the laser beam into a small, high-energy spot to achieve precise material processing.

Technical Specifications

• Diameter (D20): 20 mm
• Thickness (T4.5): 4.5 mm
• Focal Length (F150): 150 mm (short focus distance)
• Material: Quartz / fused silica (high purity optical glass)
• Wavelength Range: ~1064 nm (fiber laser standard)
• Coating: Anti-reflective, high transmittance

Function

• Concentrates laser beam into a fine, high-energy spot
• Increases cutting speed and welding penetration
• Ensures smooth cutting edges and strong weld joints
• Maintains beam stability and efficiency

Applications

• Fiber laser cutting machines
• Handheld laser welding machines
• Laser cleaning systems
• Sheet metal cutting, fabrication, automotive parts

Key Features

• High temperature & thermal shock resistance
• High laser damage threshold
• Long service life with proper maintenance
• Precision polished optical surface