Mounting
Leuze electronic
BCL 600i/BCL 601i
25
1
Zero position
2
Bar code
x
Distance acc. to reading field curves
±10 … 15°
Figure 6.1: Total reflection – line scanner
6.1.3 Avoiding total reflection – oscillating-mirror scanner
For the device with oscillating mirror, the laser beam exits at an angle of 90° to vertical.
In addition, the swivel range of ±20° is to be taken into account.
This means that in order to be on the safe side and to avoid total reflection, the device with oscillating mirror
must be inclined upward or downward 20° … 30°!
1
Zero position
2
Bar code
x
Distance acc. to reading field curves
±25°
Figure 6.2: Total reflection – oscillating-mirror scanner
6.1.4 Possible read angles between device and bar code
The optimum alignment of the device is accomplished when the scan line scans the bar code bars almost
at a right angle (90°). All reading angles that are possible between the scan line and bar code must be
taken account (see figure 6.3).
x
1
2
x
1
2
