| 摘要 |
<p>Retaining bracket has a joint sphere (1) and a mounting device for the optical device. A means is provided for fixing of mounting device at the joint sphere. The mounting device has two rings (6,7) which are movable to each other and movably arranged at joint sphere. A fixing device is arranged between the rings and connects the whole thing in such a manner that the rings are moved together and at same time and together.</p> |
