| 摘要 |
PURPOSE:To allow an object to be driven to directly and freely revolve around two axes by simple constitution with one actuator. CONSTITUTION:A light detecting means holding part 2 is supported to be freely revolvable around at least two axes and has an almost spherical surface centering around the intersecting points of two axes and a two-degree-of-freedom vibrator 3 is brought into contact with the almost spherical surface of the light detecting means holding part 2 at its leading end part and three- dimensional vibration is generated in the leading end part of said vibrator 3 by an electromechanical energy conversion element. The light detecting means holding part 2 becomes freely revolvable around at least two axes by the three- dimensional driving of the two-degree-of-freedom vibrator 3. |
