| 摘要 |
The orientation of the mirror 4 is ensured by a single reduction motor 6 driving a shaft 7 on which there are mounted two cams 10, 11 rotationally free relative to the shaft. A central driving piece 28, mounted free in translation on the shaft but rotationally securely fastened, meshes alternately with one cam and the other according to the direction of rotation, due to the dissymmetry of the teeth of each of its faces. Each of the cams 10, 11 translationally drives a rod 14, 15 bearing on the movable support 3 oscillating about a ball joint 2 and held by a spring. <IMAGE>
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