[Inspection Case] 3D Detection of FPC Foreign Matter in Smartphone Internal Frame | SR7140
SinceVision SinceVision
Detection of tiny foreign objects on the surface of FPC from three-dimensional shapes. We present a case study of FPC inspection for smartphone internal frames using SinceVision's 3D laser profiler "SR7140."
■ Inspection of the presence and size of foreign objects
The contour data obtained by laser is used to detect surface protrusions. Thresholds for height and area are set to extract foreign objects.
■ Capturing tiny foreign objects
In this case study, foreign objects as small as 0.5×0.5×0.3mm can be detected. The scan time during evaluation is 6.5 seconds.
■ Visualizing detection points with point clouds
Scanning is performed along the short side of the target object, and the sensor is rotated during the second scan. The position and shape of foreign objects can be confirmed from the three-dimensional point cloud and detection results.
*The values mentioned are based on the evaluation conditions of this case study. Results may vary depending on the target object and inspection conditions. For more details, please refer to the related links or contact us.

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