<Laser> - CO2 Lenses
Many jobs demand narrow kerf widths and heat affected zones, which can only be achieved with a tightly focused beam.
The design variables that will affect the performance of a CO2 laser lens are: focal length, diameter, shape, material and coating.
Lenses are used in most CO2 laser systems to focus all the beam’s power into a very small spot. Small, focused spot size is important for a couple of reasons: cutting, welding and heat treating generally call for high-power density, and power density is a strong function of spot size.