Too many different sizes and shapes of items to inspect. Learn what is most essential to creating an inspection system that covers a wide range of conditions.

• Variations in detection accuracy occurwhen inspecting more than a single piece at a time
• A tremendous number of man-hours is needed for the selection, evaluation and adjustment of the equipment when introducing a vision system.

• Consistent resolution performance is realized at the center and edges of the image, which reduces recognition errors for individual pieces.
• High resolution is maintained in various shooting conditions, resulting in shorter selection, installation and adjustment times for the vision system.

Company B handles many products and conducts image inspections with different check items and methods for each. As the sizes and shapes of products vary, they had to select the cameras and lenses they thought would be the most suitable and arranged the way the products are placed and how the light is applied for each kind of inspection to get the best results. However, with this approach they had to reselect the most suitable inspection equipment every time a new product was launched. The personnel in charge of this at Company B expressed his concern, saying "My original task is to enhance inspection accuracy and production efficiency, but now much of my time is taken up by selecting equipment and adjustment of the vision system."

Hearing Company B's problem, the dealer reasoned that the lenses were the cause of one-sided blur. One-sided blur is a phenomenon that occurs when a lens is out of alignment with the center (axis) of the other lenses, which prevents the intended performance from being exhibited, resulting in significant performance deterioration on one side of the image. In the case of Fujifilm "4D High Resolution" lenses for machine vision cameras, misalignment of the axis of the lenses is detected with proprietary inspection equipment by aligning the entire lens constructions with micrometer-level adjustments during assembly. In addition, thorough quality control has been implemented by assigning a serial number to each lens. As the resolution within the image frame is maintained with almost complete consistency, one-sided blur has been eliminated when shooting two products with one camera.

Generally, lenses have an ideal shooting distance and aperture at which they can exhibit their best resolution, but the resolution performance degrades in other shooting conditions. "4D High Resolution" lenses are the product of Fujifilm's abundant manufacturing know-how. A drop in resolution performance caused by changing shooting distances and apertures is controlled to the maximum extent. They are versatile and deliver the best performance irrespective of the shooting conditions. That is why "4D High Resolution" lenses have enabled image inspection of all products for Company B, which manufactures various shapes of containers. The personnel at Company B said, "The time it takes to select a lens has been reduced, which lets me focus on other tasks. The field personnel was also glad as the time for adjustment after installation has been cut in half."

"4D High Resolution" lenses
HF16XA-5M / HF25XA-5M

• * This story was arranged based on actual facts.