Mirror transducer assembly for ring laser gyroscope

Details Mirror transducer assembly for ring laser gyroscope Mirror transducer assembly for ring laser gyroscope

1990-12-18

1992-05-26

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372107, 310332, G01C 1966

Patent

active

051161281

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.

REFERENCES:
patent: 4383763 (1983-05-01), Hutchings et al.
patent: 4488080 (1984-12-01), Baumann
patent: 4813774 (1989-03-01), Dorschner
patent: 4818087 (1989-04-01), Dorschner
patent: 4824253 (1989-04-01), Butler et al.
patent: 4861161 (1989-08-01), Ljung
patent: 4915492 (1990-04-01), Toth
Laser Applications; Monte Ross; Academic Press; 1971; pp. 133-200.
Multioscillator Laser Gyros; Weng W. Chow, et al.; IEEE Journal of Quantum Electronics, vol. QE-16, No. 9, Sep. 1980.

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