Machine vision inspection places high demands on illumination, as the image material generated must be able to make even small defects visible. This poses two significant challenges:
On the one hand, defects have to be visualized on different surfaces, e.g. on rough or curved surfaces. Especially here, a high contrast and consistent illumination of the test object is particularly necessary in order to visualize three-dimensional defects such as cracks, scratches, dents or bubbles.