Trotec ProMarker 300 [33/43] Focusing

Trotec ProMarker 100 [33/43] Focusing
Promarker
Operation Manual
09/01/2012 Trotec Produktions- und Vertriebs GmbH_Linzer Strasse 156, A-4600 Wels, Austria, Technical Support 33 / 43
tel_+43 (0)7242 239-7000, fax_+43 (0)7242 239-7380, e-mail: techsupport@troteclaser.com
8.6 Focusing
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
galvo head (B) and the upper surface of the workpiece (C). The
correct focal distance depends on the lens used (focal length).
Lens Focal distance (A)
F-100 ~134,6 mm
F-160 ~211,6 mm
F-254 ~361,6 mm
B
C
A

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