Device for measuring the diameter of an object that is largely cylindrical, for example an optical fiber, without contact
US5355209A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1992 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Jun 25, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring the diameter of an object that is generally cylindrical such as, for example, an optical fiber, without contact. This device includes a laser (4) capable of emitting a luminous beam, optical means (6, 8, 10) provided to form first and second luminous beams from the luminous beams emitted by the laser and to illuminate the object (2) with these first and second luminous beams, so as to obtain two luminous beams reflected by the object which interfere with one another, and means (CCD, 14) of photo-detection and analysis of the interference between the two reflected beams, capable of determining the diameter of the object from the interference fringes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.