Method and apparatus for measuring the size of wire rod with laser beam and reference rod
US4871910A · kind A · utility
6Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1988 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Jul 22, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring the size of a wire rod comprises the steps of turning a laser beam from a laser beam source into a parallel beam used for scanning, disposing a first wire rod having an unknown size and a second wire rod having an already known size larger than the diameter of the spot of the laser beam adjacent to each other in a direction of scanning with the laser beam, receiving the laser beam traversed the first and second wire rods thereby generating a corresponding electrical output signal, and calculating the size of the first wire rod on the basis of the electrical output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.