User Guide

C
T
-
0
0
4
8
4
Scale on the collimation unit Fig. 4-11
The focus length set can be read off the scales on top of and
below the setting ring. The shift in focal position Δz can be read
in mm on the scale (arrow).
Once the focal length of the lens is known, you can determine
approximate displacement of the focal position Δz as follows:
S
G
-
0
2
0
0
5
Fig. 4-12
f Focal length of lens [mm]
f
c
Focal length of collimation [mm]
Δs Adjustment range of the set ring [mm]
Δz Displacement of the focal position [mm]
Tab. 4-4
The maximum adjustment range of the set ring is ± 5 mm.
Condition
■
The connected laser device has been switched off and
secured against renewed switching on, e.g. by means of a
shackle padlock.
22-50-17-CRen
2020-01
Adjusting the focal position
4‐17
Scales
Focal lengths of lens