Single beam laser surface velocity and displacement measurement apparatus
US6008887A · kind A · utility
37Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Mar 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Single-beam laser apparatus for measuring surface velocity at acoustic frequencies and surface displacement at ultrasonic frequencies includes a source laser and optics for directing a single laser beam at normal incidence to a surface. A photo EMF detector and optics are provided for directing surface reflected laser beam at the photo EMF detector in order to provide outputs therefrom which are directly proportional to all three orthogonal components surface velocity or displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.