Jenoptik will show a motorised beam expander, 1x to 8x, designed for industrial use. The beam expanders cover wavelengths of 355nm or 1,030nm to 1,080nm. The expansion can be adjusted continuously from 1x to 8x using software commands in order to change the spot size on the workpiece.
The divergence of the laser beam can be precisely adjusted to achieve tolerance compensation in the entire system, for example to compensate for thermal effects. Controlling the divergence also makes it possible to change the position of the working plane, for instance for 3D processing. Both features – automatic magnification and focusing – help to reduce setup times.
Thanks to an innovative frame concept the beam expanders are compact and robust. The lenses do not rotate during focusing or magnification, but are moved within a linear guide, resulting in excellent beam stability. The optical system is designed in such a way that a diffraction-limited image quality is achieved across the entire expansion range.
The motorised beam expander is a perfect match for Jenoptik’s F-theta lenses and can be used in a large number of beam guidance systems. It is used in the production of microstructures and for marking and labelling different materials.