3D means Dynamic focusing, compared with ordinary 2D laser machine, 3D laser marking machine use different galvo head. Ordinary 2D scanning head only have two mirrors, but 3D scanning head have three mirrors. The third mirrors can move forward and backward. This is the key technology of 3D laser marking machine.
Except scanning head, control card and control software is the brain of laser markers. One good control software will make complex operation become very easy.