Multi-mode vibration sensor laser
US6972400B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 2001 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Sep 11, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multimode remote vibration sensor. The inventive sensor (8) includes a mode locked laser transmitter (10); a receiver (30) adapted to detect signals transmitted by the laser (10) and reflected by an object (22) and a signal processor (40) for analyzing the signals and providing an indication with respect to a vibration of the object (22). The laser is particularly novel as a vibration sensor transmitter inasmuch as it includes a mode locking mechanism. The mode locking mechanism causes the laser to output energy at all modes within the gain profile in phase with one another. The result is a series of tight clean pulses which may be used for range resolved vibration and one-dimensional (high resolution ranging) applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.