Patent ID: 7920302

Claim:
A discrimination sensor for mounting on a machine for scanning a specific object, the specific object having a surface with a planar structure, the specific object having a scanned section, said discrimination sensor comprising: a plurality of optical devices having respective sensing widths and outputting respective electrical signals, wherein the scanned section has a plurality of scanned segments divided in a transverse direction and extending in a longitudinal direction, perpendicular to the transverse direction, the scanned segments having respective widths the widths of said scanned segments collectively forming an overall width of the scanned section, said optical devices are disposed with a predetermined interval in the transverse direction to obtain optical information from the overall width of the scanned section when the specific object is scanned in a scanning direction perpendicular to the transverse direction, and said machine detects deviation of the planar structure from the surface of the specific object by determining whether the electrical signals output are within allowable margins of sample data stored in said machine.