| 摘要 |
PROBLEM TO BE SOLVED: To drive plural members to be driven with one actuator. SOLUTION: Two lens holders 12 and 22 are friction-connected with a driving bar 8 moved back and forth in the axial direction 92 according to the expansion and contraction of a piezoelectric element 4. This device is provided with restraining mechanisms 14 and 24 for releasably restraining each lens holder 12 and 22, and interrupting the movement in the axial direction 92, and position detecting mechanisms 16 and 26 for detecting the position of each lens holder 12 and 22. A controller 3 moves the driving bar 8 back and forth in a state that the movement of one lens holder 12 or 22 is interrupted by the restraining mechanisms 14 and 24, and drives the other lens holder 12 or 22. |
