Device and method for detecting scratches

Details Device and method for detecting scratches Device and method for detecting scratches

G - Physics

01

N

G01N 21/958 (2006.01) G01N 21/896 (2006.01)

Patent

CA 2567061

The invention relates to a device and a corresponding method for detecting scratches on the surface (2) of a material, in particular glass. Said device comprises an illumination unit (3) and a recording unit (4), which register a scanning line (6) on the surface (2) of the material and can be displaced in relation to said surface (2). In order to more accurately identify scratches, the illumination unit (3) comprises at least one light strip (9), which generates parallel light pools transversally to the scanning line (6), said pools being diffuse or quasi-diffuse along the scanning line (6) and preferably at least one light source (16), which generates a diffuse or quasi- diffuse light transversally to the scanning line (6).

L'invention concerne un dispositif et un procédé associé pour détecter des rayures sur la surface d'un matériau (2), notamment du verre, au moyen d'un dispositif d'éclairage (3) et d'un dispositif d'enregistrement (4), lesquels sont mobiles relativement à la surface du matériau (2) et saisissent une ligne de balayage (6). Afin de détecter des rayures avec une grande fiabilité, le dispositif d'éclairage (3) est pourvu d'au moins une bande lumineuse (20), qui génère de la lumière diffuse ou quasi diffuse parallèle en direction de la ligne de balayage (6) et transversalement à celle-ci, et de préférence d'au moins une source lumineuse (16) qui émet de la lumière diffuse ou quasi diffuse transversalement à la ligne de balayage (6).

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