Focusing - Trotec ProMarker OEM Operating Manual

Operation
8.6

Focusing

Notice
It is absolutely essential to maintain the correct focal distance for every laser marking process.
Only when in focus will the laser beam achieve the power density necessary for permanent and
clearly legible marking.
Prior to any marking it is therefore necessary to set the correct focal distance between the marking head
and the workpiece. An incorrect focal distance is the most common cause of poor or even indistinguishable
markings.
The focal distance (A) is measured between the lower edge of the working galvo head (B) and the upper
surface of the workpiece (C). The correct focal distance depends on the lens used (focal length).
Focal length Working distance (A)
F=100 134,6 mm
F=160 211,6 mm
F=254 361,6 mm
48 ENGLISH (Translation)