Basler Ag

Wolfram Laux

Jurgen Klicker

Device for optical detection of the deformation of a surface with at least one photosensitive receiver having a matrix image plane, which is exposed by at least one light source. It is proposed according to the invention that the light source is constructed as a nearly point-source light with uncollimated light and in imaging optics are provided and adjusted such that the light source is imaged sharply onto the image plane (14) of the photosensitive receiver, so that the surface to be examined acts as a reflective surface, the light source having a known nominal position on the image plane in case of a flawless surface being examined, so that the deformation can be determined from the deviation of the actual position of the image of the light source from the known nominal position of the image of the light source on the image plane. With this arrangement, a deformation, in particular, an erroneous inclination of a CD or DVD, can be detected with high precision and by simple means.

Growing community of inventors

Munich, Georgia

Wolfram Laux