Instrument for measuring the amplitude of vibration of a vibrating object
US4125025A · kind A · utility
9Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1977 |
| Grant date | Nov 14, 1978 |
| Priority date | — |
| Expiry date | Jan 21, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An instrument for measuring the amplitude of vibration of a vibrating object consists of a first optical system for periodically projecting the image of a grating onto the vibrating object and second optical system having an optical axis intersecting that of the first optical system in the vicinity of the object, for sharing the image projected on and reflected from the object and recording the shared image on a photographic film. The measurement of the amplitude is obtained in the form of a moire pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.