Description

Laser Focal Lens 20mm Diameter is available in 4 focal lengths; 1inc (38.1mm),1.5inch (50.8mm),2inch (63.5mm) and 4inch (101.6mm).

The focal length of a lens is the distance at which the focal point occurs.

The focal point is where the laser beam has the highest energy.

Lens’s that have a smaller focal length are ideal for engraving whilst a lens with a long focal length e.g. 101.4mm are ideal for cutting thicker material