The difference between 2D AOI and 3D AOI in the SMT production line lies in their functionality.
2D AOI (Automated Optical Inspection) is a type of inspection system that captures high-resolution images of PCBs (Printed Circuit Boards) from above, and uses algorithms to compare these images with the original design file to detect defects such as missing components, wrong component orientation, and solder joint issues. It operates under planar conditions and can only detect surface defects.
On the other hand, 3D AOI is an advanced inspection system that captures images of the PCB from multiple angles and heights, in order to create a 3D model of the board. It allows for inspection of the top and bottom surfaces of the board, as well as the sides of components, and can detect more complex defects such as lifted leads, tombstoning, and skewed components.
Overall, 3D AOI offers higher accuracy and reliability in detecting defects than 2D AOI. Therefore, 3D AOI can more comprehensively test the correctness and quality of each component on the PCB board, thus improving the quality and stability of your product. However, 3D AOI's equipment and testing time are relatively large and expensive.
