Ultrasonic device as well as probe and electronic apparatus

An ultrasonic device, comprising:

• a first interconnect and a second interconnect;
• a transmitting unit that transmits a driving signal to the first interconnect and the second interconnect at the same timing;
• a first element row in which “n” ultrasonic transducer elements, “n” being an integer of 4 or more, are arranged at line-symmetrical positions along a first straight line, where a second straight line orthogonal to the first straight line is an axis of symmetry, and are connected to the first interconnect;
• and
• a second element row in which “n” ultrasonic transducer elements are arranged at line-symmetrical positions adjacent to the first element row, where the second straight line is the axis of symmetry, and are connected to the second interconnect,
• wherein when a distance between an element included in the first element row, the element being the k-th element in increasing order of distance from the second straight line, “k” being an integer between 1 and n/2−1 inclusive, and an element included in the second element row, the element being the k-th element in increasing order of distance from the second straight line, is represented by Dk, a relationship Dk<Dk+1 is satisfied with respect to at least one value of “k”.

An ultrasonic device, comprising:

• a first element row in which first ultrasonic transducer elements are arranged in a first direction at first intervals, and the same driving signal is input to first ultrasonic transducer elements;
• and
• a second element row in which second ultrasonic transducer elements are arranged in the first direction at second intervals, the same driving signal is input to the second ultrasonic transducer elements,
• wherein the first element row and the second element row are arranged line-symmetrically with respect to a center line extending in a second direction that is orthogonal to the first direction, and
• the second intervals are larger than the first intervals.