To provide a photoacoustic probe capable of acquiring subject information for reducing generation of artifacts without increasing the number of wires connected to the outside. Provided is a probe including a plurality of ultrasonic transducers, wherein the ultrasonic transducers are divided into a plurality of groups, two adjoining ultrasonic transducers belong to different groups, and the probe includes a group selection unit configured to switch signals of the ultrasonic transducers to be outputtable for each of the groups.

A directional sound apparatus includes a planar shape plate and a sound wave generator. The planar shape plate has a plurality of grooves formed on a surface of the planar shape plate. The sound wave generator is configured to radiate a sound wave to outside from the surface of the planar shape plate. A width of each of the grooves and a distance between the grooves adjacent to each other are smaller than a wavelength of the sound wave. The planar shape plate has a plurality of cell areas in which at least one groove is included. A structure of the groove included in a first cell area is different from that of the groove included in a second cell area adjacent to the first cell area, so that surface admittance in the first cell area is different from that in the second cell area.

A directional sound apparatus includes a planar shape plate and a sound wave generator. The planar shape plate has a plurality of grooves formed on a surface of the planar shape plate. The sound wave generator is configured to radiate a sound wave to outside from the surface of the planar shape plate. A width of each of the grooves and a distance between the grooves adjacent to each other are smaller than a wavelength of the sound wave. The planar shape plate has a plurality of cell areas in which at least one groove is included. A structure of the groove included in a first cell area is different from that of the groove included in a second cell area adjacent to the first cell area, so that surface admittance in the first cell area is different from that in the second cell area.

An apparatus for transmitting ultrasound comprises a curved oscillating body having a coupling surface for coupling a converter, wherein the oscillating body is curved and has a recess.

An apparatus for transmitting ultrasound comprises a curved oscillating body having a coupling surface for coupling a converter, wherein the oscillating body is curved and has a recess.

Disclosed is a burglar sensor arrangement structure for arranging, with respect to a vehicle interior member (10), a burglar sensor configured to detect an intrusion into a vehicle interior. The burglar sensor arrangement structure comprises an ultrasonic wave generation unit (2) for generating an ultrasonic wave, and a throat portion (18) for radiating the ultrasonic wave generated in the ultrasonic wave generation unit, from a outside opening (18a) thereof into the vehicle interior, wherein the vehicle interior member is formed with a groove (20), and the outside opening of the throat portion is opened at a bottom surface of the groove.

Disclosed is an ultrasound probe that includes an array of CMUT (capacitive micromachined ultrasound transducer) cells. Each cell includes a substrate carrying a first electrode of an electrode arrangement. The substrate is spatially separated from a flexible membrane by a gap. The flexible membrane includes a second electrode of the electrode arrangement. The ultrasound probe also includes an acoustic window over the array of CMUT cells. The ultrasound probe further includes a data storage element accessible to an external control module of the ultrasound probe. The data storage element stores configuration information for configuring an operation of the array of CMUT cells in pre-collapse or collapse mode with the external control module to optimize the effective bandwidth of the array. Also disclosed is a calibration method of the ultrasound probe, an ultrasound system and a method of operating the ultrasound system.

Disclosed is a burglar sensor arrangement structure for arranging, with respect to a vehicle interior member (10), a burglar sensor configured to detect an intrusion into a vehicle interior. The burglar sensor arrangement structure comprises an ultrasonic wave generation unit (2) for generating an ultrasonic wave, and a throat portion (18) for radiating the ultrasonic wave generated in the ultrasonic wave generation unit, from a outside opening (18a) thereof into the vehicle interior, wherein the vehicle interior member is formed with a groove (20), and the outside opening of the throat portion is opened at a bottom surface of the groove.

A transducer assembly comprises a housing and a plurality of frequency steered transducer array elements. Each of the transducer array elements includes a plurality of piezoelectric elements. The frequency steered transducer array elements are configured to receive a transmit electronic signal including a plurality of frequency components and to transmit an array of sonar beams into a body of water. Each sonar beam is transmitted in an angular direction that varies according to one of the frequency components of the transmit electronic signal. The frequency steered transducer array elements are positioned within the housing in a fan-shaped configuration where an end section of at least two of the frequency steered transducer array elements are within an intersection range of each other.

A transducer assembly comprises a housing and a plurality of frequency steered transducer array elements. Each of the transducer array elements includes a plurality of piezoelectric elements. The frequency steered transducer array elements are configured to receive a transmit electronic signal including a plurality of frequency components and to transmit an array of sonar beams into a body of water. Each sonar beam is transmitted in an angular direction that varies according to one of the frequency components of the transmit electronic signal. The frequency steered transducer array elements are positioned within the housing in a fan-shaped configuration where an end section of at least two of the frequency steered transducer array elements are within an intersection range of each other.