Vision systems are highly specialized measurement modules with special optics, sensors and analytical algorithms. To coordinate their camera technology, lighting, signal traffic and image processing, leading equipment manufacturers like SIPLACE maintain special teams of development and support experts.
High resolution for each component
During the inspection process, it is critical that each component is photographed with the highest possible resolution (number of pixels). That’s why the most powerful systems take a picture of each individual component (for maximum resolution and optimum focus).
Many vision systems continue to use the backlighting process, which makes only the components’ contours visible and generally ignores any features within their outline. Components like BGAs or PLCCs, however, require front light systems for a detailed inspection that make all their structures visible to the camera. Additional improvements can be achieved with adjustable lighting levels.
The algorithms used in vision systems must be exceptionally robust, accurate and fast so that the inspection process does not slow down the placement process.
Vision teaching and vision dumps
Using special offline teaching equipment, users can adjust the cameras, lighting systems and algorithms for new components within seconds and away from the production line. That way, new product introductions can be implemented quickly and reliably. Modern vision systems also support the analysis of discarded components. Based on adjustable parameters, they store images of discarded components for subsequent quality checks and analyses.