| 摘要 |
An electrostriction transducer comprises a column of an electrostriction material having an axis and a pair of axial ends with internal electrodes (1,17) disposed in the column to divide the column into a pile of electrostriction layers (23) stacked on one another along the axis and protection layers (21,22) positioned between the pile and the respective axial ends. The electrostriction transducer further comprises voltage supplying means for supplying voltage to the internal electrodes to produce electric fields in the electrostriction layers parallel to the axis and to produce an elongation of the pile, characterized in that at least one of the layers (41,42) has a different thickness from the electrostriction layers.
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