Method and apparatus for optically detecting the dimensions of an object and use of the method
US5418616A · kind A · utility
0Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 25, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | May 25, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Two optical windows serve for the passage of a light beam through a treatment chamber in which a product is disposed whose dimensions are to be detected. Between the treatment chamber and each one of the optical windows there is disposed a rotary valve, which permits the separation of the optical window from the treatment chamber. Thus it is possible to prevent a medium that adversely influences the optical windows in the treatment chamber from gaining access to the interior face of the windows if protection of the windows has priority over a measurement. It is thus possible to considerably extend the service life of the windows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.