Focusing lens, used in the heads of fiber laser cutters. Focuses the laser beam.
The primary function of a lens is to focus or scatter light symmetrically (relative to the axis). The larger the refractive index and the smaller the radius of curvature, the shorter the focal length of the lens will be.
Compatible with the BM111 model head (power rating of 3.3kW).
Diameter: 30 mm
Focal length: 155 mm
Power: 0 to 3kW