Method and apparatus for measuring the diameter of a running elongate object such as an optical fiber
US4847509A · kind A · utility
8Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1987 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Nov 12, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/105
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The diameter of a running elongate object such as an optical fiber is measured by means of two opto-electronic systems. The systems have optical axes which are perpendicular to each other and to the running axis of the object. Each of the systems further includes a microscope lens for forming a blurred image of the object on a strip of photodetectors. The systems combine their images in an apparatus which calculates an accurate position of each edge of the object by interpolation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.