Patent ID: 7453563

Claim:
A device for detecting scratches on a surface ( 2 ) of a material, in particular glass, said device comprising an illumination device ( 3 ) for illuminating the surface of the material and a reception device ( 4 ), which detect a scanning line ( 6 ) on the surface ( 2 ) of the material and which are displaceable relative to the surface ( 2 ) of the material; and wherein the illumination device ( 3 ) includes at least one light strip ( 9 ), which generates parallel light transversely to the scanning line ( 6 ), and at least one light source ( 16 ), which generates diffuse or quasi-diffuse light transversely to the scanning line ( 6 ), and wherein the at least one light source ( 16 ) is located on a respective end face of the at least one light strip ( 9 ), and the at least one light source ( 16 ) has at least one lamp ( 11 ) located in a normal plane of the scanning line ( 6 ).