| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic transducer which can transmit and receive ultrasonic waves of a plurality of frequencies by reducing the difference of sensitivity between two types of ultrasonic element groups, while simplifying the circuitry, and to provide an ultrasonic probe, a diagnostic device and an electronic apparatus.SOLUTION: An ultrasonic probe 1 includes m (m is an integer of 1 or more) first ultrasonic elements 8a each having a first diaphragm 51a and transmitting and receiving ultrasonic waves, and n (n is an integer larger than m) second ultrasonic elements 8b each having a second diaphragm 51b having an area smaller than that of the first diaphragm 51a and transmitting and receiving ultrasonic waves. The n second ultrasonic elements are connected in series electrically, and when the sum total of areas of the first diaphragm 51a of the m first ultrasonic elements 8a is A, and the sum total of areas of the second diaphragm 51b of the n second ultrasonic elements 8b is B, the B/A is 0.9-1.1. |
