G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/89 (2006.01)
Patent
CA 2431256
The invention concerns a device for automatic surface inspection of an unwinding strip to detect surface defects, comprising at least a camera (10) whereof the optical axis is directed towards the surface to be inspected and forming on said surface a transverse line of sight (L) and at least an illuminating system (15) whereof the incident rays (Ri) are directed towards the transverse line of sight and distributed over the entire length of said line. At each point of the transverse line of sight, the observation direction of the camera (10) forms with the specular reflected ray at said point a constant angle.
L'invention a pour objet un dispositif d'inspection automatique de surface d'une bande en défilement pour la détection de défauts de surface, du type comprenant au moins un appareil de prise de vues (10) dont l'axe optique est dirigé vers la surface à inspecter et formant sur ladite surface une ligne de visée (L) transverse et au moins un système d'éclairage (15) dont les rayons incidents (Ri) sont dirigés vers la ligne de visée transverse et répartis sur toute la longueur de ladite ligne. Au niveau de chaque point de la ligne de visée transverse, la direction d'observation de l'appareil de prise de vues (10) forme avec le rayon réfléchi spéculaire audit point un angle constant.
Auger Stephane
Blanchard Dominique
Robic
Usinor
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