Vibration gyro and the process of producing the same
US7637159B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2007 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jan 21, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4984
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inclination of an inclined surface formed by working a ridge of a resonator is set to be within a predetermined angular range, whereby a leakage of vibration in the out-of-plane direction is reduced, the leakage of vibration being generated according to the detuning degree adjustment. In addition, a single laser beam is irradiated onto the ridge at an incident angle within a predetermined angular range, whereby a simple working on the inclined surface is established for the leakage vibration adjustment. A degree of the leakage vibration of the resonator is determined based on a relationship with the drift amount that is a ratio of the angular velocity change, and the inclination of the inclined surface is set to be within a predetermined angular range, thereby suppressing the drift amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.