Mirror transducer assembly for ring laser gyroscope
US5116128A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1990 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Dec 18, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/665
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein is a Pathlength Control Assembly for Ring Laser Gyroscope comprising, in a preferred embodiment, a mirror, coupled to a mirror housing including a mirror post, wherein the mirror is mounted on an axially deflectable membrane of the housing. A pair of piezoelectric transducers are responsive to an electronic input signal and mounted to a backing plate. The transducers are mounted within a driver housing and drive a driver post which is made from a thermally expansive material. As the backing plate is deformed to drive the mirror post to axially deflect the mirror membrane, the central driver post passively expands in response to temperature changes. In this manner, the transducers and thermally expansive mirror post act in conjunction to both actively and passively drive the mirror post over the full dynamic range of multioscillator or other ring laser gyroscope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.