In addition to offering high power, this system lets users select the appropriate laser irradiation method for the application. This contributes significantly to improving the quality of the marking and to shorten marking time, two important factors for production.
Mechanically, the LASIT three-axis head is composed of a system of linear motors, two X and Y rotaries that allow the laser beam to be moved along the axes, and a third axis for focusing: the laser beam passes through a photographic objective equipped with of movable lens, which in turn is mounted on a linear side-shifter. Operation is automatically regulated through the FlyCAD software.
The heart of the three-axis head is its optical design, which varies according to the type of application and the application requirements: the system can adapt to the size of the working field and to the size of the required laser spot.
The scanning mirrors are located after the lens of the photographic objective. The raw laser beam enters the optical system through the dynamic expansion lens. The photographic objective lenses re-draw the Gaussian Beam formed by the dynamic expander lens on the target plane. The movement of the dynamic expander lenses through the linear side-shifter varies the distance of the focal plane and therefore the dynamic focus. The mirrors (MX and MY) – which are located in the XY scanning module – bend the beam and direct it by angular deflection to scan the work plane.