Planning For Unwanted Light Reflection Or Obstructed View - Dalsa Z-Trak2 2K Series User Manual

NOTE
Note that scan direction and profiler orientation are independent of each other.
Scan direction and profiler orientation features are found in the Data Output category in Z-Expert.

Planning for Unwanted Light Reflection or Obstructed View

Acquiring quality profiles entails planning for unwanted laser light reflections or acquisition blockages. The
following examples depict a few potential issues to consider.
Blocked measurement area
Consider cases where the image sensor may not have complete visibility over the required scan range, as in the
figure below. In this case, the object may need to be scanned from two opposite directions to fully inspect the
object, for instance by using 2 sensors head-to-head.
Object shape obscuring some areas
Certain objects like the spherical example below create areas where the laser is blocked. Scanning the object
from two opposite directions in the Y-axis can form a more complete profile.
Z-Trak Family of 3D Sensors
Figure 14. The form of the object blocks the image sensor.
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