Device for automatic surface inspection of an unwinding strip
US6995838B2 · kind B2 · utility
1Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2001 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Dec 10, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/8901
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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 tranline 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.