| 摘要 |
The subject of the invention is an improvement in the device for eliminating the parasitic rotations of the moving mirrors 15 of laser rate gyros, which are moved by piezoelectric ceramics 11. The parasitic rotations are due to the deformations of the outer parts 12 constituting the body of the moving mirror and fixed to the optical unit 1, under the effect of the accelerations of the actuation movement. These parasitic rotations are corrected, in the invention, by springs 24, fixed to the external structure of the gyro laser by screws 26, and which bear on a piece 30 fitted into a hole 38 pierced in the central part 13 of the piezoelectric mirror assembly, thus righting the outer parts 12. The invention applies to all lasers and in particular to gyro lasers. <IMAGE>
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