Method and apparatus for the detection of surface deformations

摘要

The present invention relates to a simple and quick process, small surface deformations on reflective, or glossy, moving workpieces to be able to determine the. For this purpose, a process for the detection of surface deformations (30) on specularly reflecting objects (3) is provided, in which a light source (1) is provided, which at least one linear light - dark - transition (10), with the light source (1) the surface (9) of the object (3) is illuminated at an oblique angle. By means of an imaging detector (5), the of the surface (9) of the object (3) reflected light of the light source (1) and the course of the light - dark - transition (10) is detected, while the object (3) relative to the arrangement of image structure-providing detector (5) and the light source (1) is moved. The direction of movement of the object (3) is located transversely to the longitudinal direction of the light - dark - transition (10) is. A surface deformation (30) on the surface (9) of the object (3), on the basis of a deviation from the linear course of the structure-providing with the image detector (5) imaged light - dark - transition (10) is detected.