Light diffuse reflected unevenness optical detection arrangement for detecting location of scratch on glass pane, has detector detecting diffuse-reflected light, where detector does not detect specular-reflected light

摘要

The arrangement (1) has an integrated light beam producing-and scanning device (2) for producing light beams i.e. laser beams (3) and for scanning a surface of a glass pane (4) with the produced light beams. A detector (9) is arranged adjacent to the integrated light beam producing-and scanning device in such a manner that the detector detects light that is diffuse-reflected from the glass plane during illumination with the light beams and does not detect light that is specular-reflected from the glass plane during illumination with the light beams. An independent claim is also included for a method for optical detection of light diffuse reflected unevenness of a glass pane.