Page 2 - Laserline-OTZ-zoom-optics

Flexible,

Dynamic,

Modular

Flexibility in the focus Dynamics at the workpiece

For many tasks of thermal surface treatment or small The motorized adjustment of the optical elements allows
series production, laser system and processing optics a precise control of the spot radius, the track width or the
must be flexibly adaptable to cope with a wide variety of focus length of the laser spot. Different processing tasks
different workpiece geometries. The matching Laserline can thus be realized efficiently by dynamically changing
system solution is an OTZ zoom optics with adjustable the geometry in the X and Y direction – also during the
and homogenized focus. The OTZ-5 family is based on ongoing laser process in closed loop-control of the laser.
three different types of zoom optics to create variable Additional water cooling and integrated temperature
circular spots (OTZ-5 VC), variable line spots (OTZ-5 VL) sensors allow for continuous operation at high power of
and rectangular spots (OTZ-5 VR) which can be adjusted up to 20,000 W and multi-shift operation. In particularly
in X and Y direction independently. dusty production environments, the stable housing
according to IP54 as well as the optional sealing air
For all zoom configurations the intensity distribution protects the optics from contamination.
remains homogeneous and ensures a uniform energy
input across the entire track width. Long setup times due
to the change and the alignment of optical systems can
be avoided with the highly flexible system.

In particular for applications like laser hardening the
OTZ zoom optics provide huge technical benefits due
to the flexibility as well as the homogeneous intensity
distribution. The zoom range of OTZ-5 VC offers sufficient
flexibility to realize both heat conduction welding and
keyhole welding with one single processing head.
Furthermore, this configuration is particularly suitable for
ambitious cladding tasks, where variable track widths are
required.

Temperature / Power regulation:
Constant surface temperature at variable
track width

Blue line = temperature curve
Red line = curve of laser output power