Which focus lens should I use for CO2 laser engravers?
GCC offers four different focal lenses for CO2 laser engravers namely the 1.5”, 2.0”, 2.5”, and 4.0” for different applications. The number description, 1.5”, 2.0”, 2.5”, and 4.0” signifies the distance of where passed through beam will converge. For example, when a beam of light passes through a 2.0” focus lens, the light beam will converge at a 2.0” distance resulting in a concentration of energy at that spot.
The resulting spot size from the different focus lens are also different and the following chart shows the different spot sizes achieved from the different lenses.
1.5” Lens
The 1.5” lens is best when used for engraving of very fine details
2.0” & 2.5“ Lens
The 2.0” & 2.5“ lenses are good for normal engraving and cutting of up to 10mm thick acrylic
4.0” Lens
The 4.0” lens is good for cutting of 10mm and above acrylic.
Engraving effects achieved with the different lenses
Cutting edges achieved with the different lenses
