QX 500 D AOI

The CyberOptics QX 500 D is an automated optical inspection (AOI) system. The QX 500 D belongs to the metrology and inspection equipment category. CyberOptics manufactures the QX 500 D.^[1][2]

An automated optical inspection machine scans an area with an illumination source and a camera or line sensor. A controller compares the captured image against reference data or a design file. Image-processing algorithms identify locations that differ from the expected pattern. The system reports defect coordinates for review or repair. Optical inspection tools of this kind derive results from image comparison rather than physical contact with the surface.

Automated optical inspection is normally placed at defined checkpoints in a manufacturing line. In electronics assembly, inspection commonly follows the solder-paste printing step and again after component placement or reflow soldering. Boards found with defects are routed to rework before further assembly. In semiconductor-style processing, optical inspection steps find surface and pattern defects at intermediate stages. The inspection step is typically situated between a material-deposition or assembly step and the next process stage.

Automated optical inspection is applied to printed circuit board assembly, including solder-paste inspection, component-placement verification, and solder-joint examination. AOI methods are also used to inspect bare substrates, connectors, and microelectronic components for dimensional and appearance defects. Applications span quality control at the end of assembly and in-process monitoring of earlier manufacturing steps. Metrology and inspection equipment of this type serves electronics manufacturing lines and related inspection stations.