| 摘要 |
An ultrasonic probe includes: a composite piezoelectric element including piezoelectric elements arranged through gaps on a plane and a filler filled in each of the gaps; an adhesive layer positioned in an ultrasonic wave irradiating direction orthogonal to the plane, the adhesive layer being in contact with one plate surface of the composite piezoelectric element; and a complete reflector layer joined to the composite piezoelectric element through the adhesive layer to reflect an ultrasonic elastic oscillation generated in the composite piezoelectric element substantially toward the composite piezoelectric element plate surface. The composite piezoelectric element has a plate-like connector portion constituted by only the piezoelectric elements, the plate-like connector portion covering the whole of the composite piezoelectric element.
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