How Automated Optical Inspection Works: A Complete Guide

Automated optical inspection (AOI) is a technology used in the manufacturing process to detect defects or irregularities in products. It is commonly used in industries such as electronics, automotive, and pharmaceuticals to ensure the quality and reliability of products. AOI systems use cameras and image processing algorithms to inspect products for defects that are not visible to the naked eye.

The process of AOI begins with the product being placed on a conveyor belt or a moving platform. As the product moves through the inspection station, cameras capture images of the product from different angles. These images are then processed by software algorithms that analyze the images for defects such as missing components, misalignments, or incorrect markings.

One of the key components of an AOI system is the camera. High-resolution cameras are used to capture detailed images of the product being inspected. These cameras are often equipped with different lighting sources to illuminate the product from different angles, allowing the system to capture clear images of the product.

Once the images are captured, they are processed by software algorithms that analyze the images for defects. These algorithms are designed to identify specific defects based on predefined criteria. For example, the system may be programmed to look for missing components or solder joints that are not properly aligned.

After the images are analyzed, the system generates a report that highlights any defects found during the inspection process. This report can be used by operators to identify and address any issues with the product. In some cases, the system may also be programmed to automatically reject products that do not meet the quality standards.

Overall, automated optical inspection is a valuable tool for manufacturers looking to improve the quality and reliability of their products. By using cameras and image processing algorithms, AOI systems can quickly and accurately inspect products for defects, helping to ensure that only high-quality products are delivered to customers.