Abstract: An ultrasonic transducer comprises: a piezoelectric member which is provided with electrodes on both plane portions and which is fixed and disposed such that part of an acoustic matching layer protrudes at a predetermined position of the hard layer which makes up the acoustic matching layer; and a substrate which is formed with an electroconductive pattern and which is fixed and disposed on the face of the hard layer; wherein with such a disposed state, the piezoelectric member and the substrate are divided to array the plurality of piezoelectric devices; and wherein the electroconductive pattern of the substrate, and at least part of the electrodes of the piezoelectric member which is electrically connected to at least part of this electroconductive pattern are directed in the same direction, this substrate is disposed adjacent to the piezoelectric member, and the electroconductive pattern on the substrate and the electrodes of the piezoelectric member, which are divided, are electrically connected via an el

Abstract: An ultrasonic transducer comprises: an acoustic matching layer including at least a layer made up of a hard material; a piezoelectric member of which the length dimension is shorter than this acoustic matching layer, which is fixed and disposed at a predetermined position of a layer made up of the hard material which makes up the acoustic matching layer, and divided into a plurality of piezoelectric devices in this disposed state; and a transducer shape-formative member made up of a hard material, wherein, in a state in which the surfaces of the piezoelectric devices divided and formed are disposed on the inner circumferential surface side, the plurality of piezoelectric devices are arrayed in a predetermined shape, fixed and disposed on the surface where the piezoelectric devices of the acoustic matching layer protruding from the piezoelectric devices have been disposed.

Abstract: By bonding a conductive first matching layer 14 to the acoustic radiation surface side, which is the bottom side, of a belt-shape piezoelectric element on both faces with electrodes provided, and using a dicing machine to form divided grooves 16, an array of piezoelectric elements 6, 6, . . . , 6 is formed in the element array direction. By deepening the divided grooves 16, generation of cross talk can be prevented, and by filling the portions of the divided grooves 16 not in contact with the piezoelectric elements 6 with a conductive adhesive 17, a reduction in strength due to formation of the divided grooves 16 can be prevented, and a common connection between the ground electrode 13b on the bottom surface of each piezoelectric element 6 and the conductive first matching layer 14 can be reliably secured.

Abstract: By bonding a conductive first matching layer 14 to the acoustic radiation surface side, which is the bottom side, of a belt-shape piezoelectric element on both faces with electrodes provided, and using a dicing machine to form divided grooves 16, an array of piezoelectric elements 6, 6, . . . , 6 is formed in the element array direction. By deepening the divided grooves 16, generation of cross talk can be prevented, and by filling the portions of the divided grooves 16 not in contact with the piezoelectric elements 6 with a conductive adhesive 17, a reduction in strength due to formation of the divided grooves 16 can be prevented, and a common connection between the ground electrode 13b on the bottom surface of each piezoelectric element 6 and the conductive first matching layer 14 can be reliably secured.

Abstract: By bonding a conductive first matching layer 14 to the acoustic radiation surface side, which is the bottom side, of a belt-shape piezoelectric element on both faces with electrodes provided, and using a dicing machine to form divided grooves 16, an array of piezoelectric elements 6, 6, . . . , 6 is formed in the element array direction. By deepening the divided grooves 16, generation of cross talk can be prevented, and by filling the portions of the divided grooves 16 not in contact with the piezoelectric elements 6 with a conductive adhesive 17, a reduction in strength due to formation of the divided grooves 16 can be prevented, and a common connection between the ground electrode 13b on the bottom surface of each piezoelectric element 6 and the conductive first matching layer 14 can be reliably secured.

Abstract: By bonding a conductive first matching layer 14 to the acoustic radiation surface side, which is the bottom side, of a belt-shape piezoelectric element on both faces with electrodes provided, and using a dicing machine to form divided grooves 16, an array of piezoelectric elements 6, 6, . . . , 6 is formed in the element array direction. By deepening the divided grooves 16, generation of cross talk can be prevented, and by filling the portions of the divided grooves 16 not in contact with the piezoelectric elements 6 with a conductive adhesive 17, a reduction in strength due to formation of the divided grooves 16 can be prevented, and a common connection between the ground electrode 13b on the bottom surface of each piezoelectric element 6 and the conductive first matching layer 14 can be reliably secured.

Abstract: An ultrasonic transducer comprising, a piezoelectric block which is formed into a plurality of piezoelectric segments by way of one or more slots, spaced apart, on one main surface of the block, the segments being connected with each other at one and the other of the opposed main surfaces of the block, an organic filler filled at least partially in the slots, a first and a second electrodes formed respectively on the one and the other of the continuous main surfaces of the segments, an acoustic matching layer formed on the one main surface of the piezoelectric block, and a backing material formed on the other main surface of the piezoelectric block.

Abstract: An ultrasonic probe comprising a coaxial cable 11 capable of transferring an energizing pulse voltage and an echo signal, at least one piezoelectric element 5, an acoustic matching layer 7 disposed on a sound transmitting face side of each piezoelectric element 5 and an acoustic backing layer 8 disposed on its opposite side, the above ultrasonic probe being adapted to transmit and receive an ultrasonic wave, wherein each piezoelectric element 5 has the following distribution of spontaneous polarization according to positions of the piezoelectric element. The spontaneous polarization of the ultrasonic probe of the present invention has differences such that the spontaneous polarization is caused to be strong at a position where the absolute value of Bessel function J.sub.0 (x/a) is large while the spontaneous polarization is weak at a position where the absolute value of J.sub.0 (x/a) is small.

Abstract: An ultrasonic piezoelectric transducer and an ultrasonic actuator for performing enhanced elliptical vibration comprise a first laminated piezoelectric element having a first fixed end, a resonator mounted to the opposite end of the first laminated piezoelectric element, a second laminated piezoelectric element having one end thereof fixedly mounted to the resonator in a direction other than a vibrating direction of the first laminated piezoelectric element, and a load mass fixedly mounted to the opposite end of the second laminated piezoelectric element. This structure permits the enhanced elliptical vibration of the transducer to have a large, controllable amplitude.

Abstract: In an ultrasonic probe for use in ultrasonic endoscope, ultrasonic diagnosing apparatus and other ultrasonic apparatuses, an ultrasonic vibrator is arranged in a recess formed in a cylindrical housing and is secured thereto such that portions of first and second electrodes are exposed out of the recess. First and second lead wires are embedded in the housing such that tips of the lead wires are exposed within connecting areas formed in the housing in communication with the recess. The tips of the first and second lead wires are connected to first and second electrodes of the ultrasonic vibrator with the aid of conductive members made of solder, conductive paste or conductive adhesive agent. The other end of the first and second lead wires are extended from the same end face of the cylindrical housing.