Vibrating element transducer
US5521884A · kind A · utility
6Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1995 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Mar 15, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vibrating element transducer is provided in which a vibrating element and a substantially non-vibrating reference element are positioned side by side and illuminated via an optical fibre. The surfaces of the vibrating element and the reference element are formed at slightly different distances from the end of the optical fibre. The differing distances are arranged such that interference between the light reflected from the vibrating element and from the reference reflector can be used to determine the frequency of vibration of the vibrating element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.