Lens quality is key in machine vision

摘要

Machine-vision camera lenses are usually treated as accessories: Their characteristics may not be specified, or even considered, until the vision system has already been designed. Yet, the lens is responsible for much of an image's quality, said Greg Hollows, director of machine-vision solutions for Edmund Optics. "The optics provided by a camera lens can be thought of as a signal conditioner," he said. "The lens conditions the signal that goes from the object viewed, via the lens, to the camera's image sensor."