This demo illustrates the application of PMS (Photometric Stereo) technology for high-precision 3D surface estimation and dent detection on IC packages.

▲System Configuration

PMS estimates surface shape by using multiple images captured from a fixed camera position under different lighting directions. By analyzing brightness variations caused by the differing illumination angles, it effectively detects subtle surface anomalies such as dents and scratches.

PMS inspection enables the visualization of subtle surface irregularities that are difficult to detect using conventional optical systems.