Device for optically scanning a moving web of material and method for adjusting said device
US6757064B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Dec 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/8903
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device serves for optically scanning a moving material web. The device is formed by a CCD camera comprising a lens and a CCD receiving element, which is provided with photodiodes. So as to be able to exactly adjust the area of the material web scanned by means of the device, the CCD receiving element can be adjusted transversely in relation to the optical axis of the lens. For adjusting the CCD receiving element, a template with a structure is provided. This structure is detected by the photodiodes, and the signals emitted by the photodiodes act on a controlling device. The controlling device adjusts the CCD receiving element so that it is aligned with the structure of the template.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.