Ring laser gyro cavity length controller, frame compression
US5131751A · kind A · utility
0Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Apr 26, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/665
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a ring laser gyroscope a laser beam is directed to travel in a closed path, however, temperature variations can cause a change in the path length which, if not corrected, can result in drift and scale factor errors. The present invention controls the length of this closed path or cavity by applying a force to the gyro normal to the lasing plane. This is accomplished by inserting a bolt through the longitude axis of the gyro and by utilizing the bolt to apply or to relieve force therefore maintaining the cavity length constant over a given temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.