Simplified dispersion equalization field coil design for a multioscillator ring laser gyroscope
US5488622A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1994 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Jul 29, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/667
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
At least one coil (32) is located on an exterior side face (30) of a frame (12) of a ring laser gyroscope (10) such that a significant component of the magnetic field generated by the coil is colinear with the plasma discharge of the gyroscope, and by which dispersion equalization of the gyroscope can be effected. The coil may be supported by a magnetically permeable annular bobbin (40), which is set about a mirror (26) on side face (30) and which may be partly set within grooves in the side face, to reduce the current necessary to effect dispersion equalization and to provide shielding of the mirror from the effects of tangential and transverse fields, and to increase the shielding effects for the mirror, both from Faraday rotator magnets (16) and from external magnetic fields. For those mirrors where no coils are present, the annular bobbins are used solely for their shielding properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.