An ultrasonic transducer element chip characterized by comprising a substrate including openings arranged in an array pattern, ultrasonic transducer elements respectively disposed at the openings on a first surface of the substrate, and a reinforcing member fixed on a second surface of the substrate opposite to the first surface of the substrate to reinforce the substrate, the reinforcing member including linear groove parts formed on a surface of the reinforcing member fixed on the second surface of the substrate so that internal spaces of the openings and an external space of the substrate are in communication with each other via the linear groove parts, the linear groove parts extending along a plane of the surface of the reinforcing member, and the linear groove parts being arranged at an interval in a first direction smaller than a width of each of the openings on the second surface of the substrate in the first direction.

An ultrasonic transducer device includes an ultrasonic transducer element array, a first signal terminal and a second signal terminal. The ultrasonic transducer element array has a 1^st element group to a k^th element group (where k is a natural number such that k≥2). The first signal terminal is connected with a control section configured to perform at least one of receiving and transmitting of signals. The second signal terminal is connected with the first signal terminal via the ultrasonic transducer element array. Each of the 1^st element group to the k^th element group includes a plurality of ultrasonic transducer elements electrically connected in parallel. The 1^st element group to the k^th element group are electrically connected in series between the first signal terminal and the second signal terminal.

A target object detection device (100) is provided. The device (100) includes a signal processor (108), a display unit (103), and a controller (101). The signal processor (108) receives a reception signal generated based on an echo of an ultrasonic wave from a target object and generates echo data corresponding to a distance from a transmission source (110) of the ultrasonic wave to the target object every time the ultrasonic wave is transmitted. The display unit (103) has a display screen (103a) with a first side (103b) and a second side (103c) that is turnable around an axis perpendicular to the display screen (103a), and displays an image on the display screen (103a) based on the echo data. The controller (101) sets a range with respect to time at which the ultrasonic wave is transmitted, and outputs the echo data corresponding to the ultrasonic wave within the time range according to a turning state of the display screen (103a).

An ultrasonic detector for roadway vehicles comprises an array of electroacoustic transducers (4-a, 4-b, 5-a, 5-b) mounted on the rear of the vehicle. The transducers are sequentially driven by a transmitter circuit (1, 2, 3) to transmit a pulsed, laterally shifting ultrasonic energy toward an object located behind the vehicle in one of plural regions defined by partially overlapped directivity patterns of adjacent transducers. A receiver circuit (6, 7, 8) is coupled to the transducer array to receive echos returning from the object during the interval between successive transmissions of the ultrasonic energy. A logic circuit (9) detects the lateral position of and the distance to the object for giving relevant indications on a display unit (10).

Bei einer Vorrichtung zur optischen Anzeige von Größen ist auf einer rotierenden Scheibe (1) ein Leuchtelement (15) angeordnet, das zu definierten Zeitpunkten und für vorgebbare Zeitabschnitte zum Aufleuchten gebracht wird. Eine solche Vorrichtung erlaubt die Anzeige einer Vielzahl von physikalischen Größen auf engstem Raum und mit einem geringen technischen Aufwand.