User Guide

B
1
1
2
0
0
3
0
-
2
3
-
T
1 Anodized aluminum sheet
2 Smallest weld point
B Space from lower edge of
lens protection to focal plane
Determining the focal position with the working laser Fig. 4-5
2. Put an anodized aluminum sheet (1) on the working table.
3. Adjust distance B according to the dimensional drawing.
4. Apply several weld points on the anodized aluminum sheet.
There should be a space of approx. 6 mm between the weld
points.
With a focal length of lens of 150 mm to 300 mm, change
the distance between objective and workpiece from -3 mm
to +3 mm in increments of 0.5 mm.
With the smallest weld point (2), the focal point is directly on the
aluminum sheet. This identifies the focal position and, thus, the
actual distance between the lower edge of the lens protection
and the focal point for this focusing optics.
Measuring the working distance
The working distance indicates the vertical distance from the low-
ermost edge of the focusing optics to the workpiece.
If, e.g. for a welding optics the distance to the workpiece should
be measured exactly in the middle of the protective glass, the
space from lower edge of the lens protection to the protective
glass has to be added to the working distance between lower
edge of the lens protection and the workpiece.
22-50-17-CRen
2020-01
Adjusting the focal position
4‐11