| High-speed cameras are also used for lyophilized product inspection, and for the inspection for cosmetic defects on the containers themselves.
Higher processing speeds, greater resolution, incorporation of artificial intelligence and neural networks, and adoption of a graphical user interface (GUI), have all led to enhancing the capabilities of camera-based systems. Such developments are expected to further enhance the performance of the camera-based systems and offer greater results.
CCD camera-based cosmetic inspection of containers (left) and combination SD light transmission particle detection (right). |
The success of modern-day camera-based inspection equipment is largely attributable to the use of charge-coupled device (CCD) comprised of a light-sensitive integrated circuit that stores and displays the data for an image. Each pixel in the image has a gray scale (typically 256 levels of gray) value based on the lighting applied. This value is counted based on the threshold value set, and the total number of pixels counted is compared to a range limit to determine if that container will be rejected. High-quality CCD cameras can even produce an image in extremely dim light, and the resolution of the image does not deteriorate at low light intensities, as was the case with tube-based devices.
Cosmetic Inspection Machine
Each container rotates 360 degrees at low speed, acquiring up to 24 images per container. Inspection Items for cosmetic defects include cracks, crimp, stopper, cap, flange, etc.and machines can be made for inspecting empty vials, liquids, lyophilized or powder-filled products at rates up to 24,000 containers/hour.
TYPICAL AREAS OF INSPECTION BY CONTAINER TYPE
Inspection for Syringes
Inspection for Ampoules
Inspection for Cartridges
Inspection for Vials
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