Defect detection lighting system and methods for large glass sheets
US7551274B1 · kind B1 · utility
48Cited by
23References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2007 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Sep 15, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8825
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A glass defect detection system comprising an apparatus and methods for the real-time inspection for defects in and on transparent sheets, such as a large sheets of glass is disclosed. The defect detection system utilizes a plurality of dark-field illumination systems and bright-field illumination systems and a plurality of baffles. A plurality of imaging devices are deployed to obtain images of transparent sheets. The defect detection system provides uniform lighting capable of equal detection of defects in all orientations and geometries. An image processing system analyzes for defects in and on the transparent sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.