171 results about "Acoustic lens" patented technology

An acoustic lens to steer an acoustic beam includes a first structure, a second structure spaced from the first structure, an array of projections disposed between the first and second structures, each projection of the array of projections extending from the first structure toward the second structure to define a respective gap between the projection and the second structure, and an actuator configured to move the first structure, the second structure, or the array of projections for collective adjustment of the respective gaps of the array of projections. Each projection is configured to define one or more respective unit cells, each unit cell having a sub-wavelength size relative to the acoustic beam to establish an effective refractive index profile for the acoustic beam between the first and second structures. The actuator is configured such that the collective adjustment of the respective gaps varies across the array of projections to spatially modify the effective refractive index profile to steer the acoustic beam.

Disclosed are ultrasound transducers with a small form factor, enabling applications for which traditional ultrasound transducers are unsuited. The transducers can be configured to interface with a variety of medical imaging systems. Also disclosed are example methods of manufacturing ultrasound transducers. Example versions of the ultrasound transducer can include an acoustic lens secured to the housing, a piezoelectric array, a backing layer with a phase disruptive component, an interposer board coupled to the piezoelectric array, and a cable assembly coupled to the interposer board. Moreover, disclosed are methods and systems for detecting and classifying anatomical structures using ultrasound systems. A system can generate a clip of brain vessel segmentations in an ultrasound of a patient and determine blood vessel parameters at least by inputting the clip to a machine learning model configured to output the plurality of blood vessel parameters based at least on the clip.

The invention provides an ultrasonic acupuncture device based on an ultrasonic transducer and a using method of the ultrasonic acupuncture device, and relates to the technical field of ultrasonic acupuncture. In order to solve the problems that an ultrasonic acupuncture device in the prior art is single in focusing mode and fixed in sound field and cannot effectively simulate multi-element core techniques such as lifting, inserting, twisting, rotating and oblique acupuncture in the traditional Chinese medicine acupuncture process, a target acupuncture technique type and operation time are converted into cooperative control signals for a concave fan-shaped phased array transducer and an acoustic lens; executing three operation modes: synchronously exciting all array elements and adjusting the distance between a transducer and an acoustic lens to realize axial dynamic focusing, and simulating a hand lifting and inserting method; array elements are excited according to specific phase difference time delay to generate a vortex sound field, and a twisting technique is simulated; a part of array elements are symmetrically opened, so that the acoustic beam deflects to generate an inclined focal region, and an inclined thorn technique is simulated. The simulation precision and flexibility of ultrasonic acupuncture are improved, the treatment process is completely noninvasive, and the safety and acceptability of a patient are improved.

An ultrasonic probe lens comprising a lens body comprising a solid material extending outward from an optical lens axis to a periphery, an inner surface of the lens body, and an outer surface of the lens body. A thickness of the lens body as measured from the inner surface to the outer surface varies from an optical lens axis to the periphery such that the lens body is configured with an inner optical profile and an outer optical profile to phase modulate the ultrasonic waves incident upon the lens body to reduce reverberations.

The invention discloses a focusing type acoustic streaming heat dissipation device facing a chip. The device belongs to the crossing field of ultrasonic technology and heat dissipation technology and is composed of a piezoelectric stack, an acoustic lens, a splitter plate, a base, a supporting rod, a copper electrode and the like. According to the device, geometric parameter configuration of the splitter plate, the piezoelectric stack and the acoustic lens is optimized, and a double-piezoelectric-plate stacked structure is adopted to enhance the ultrasonic resonance effect; high-frequency alternating voltage is applied to the copper electrodes at the two ends of the piezoelectric stack, high-frequency sound waves are excited through the inverse piezoelectric effect, and after the sound waves are focused through the sound lens, a gradient sound pressure field is formed in a cavity formed by the splitter plate and the piezoelectric stack; air molecules are driven to move directionally based on the acoustic streaming effect, so that air flow at an air inlet is accelerated by sound pressure to form high-flow-rate focusing jet flow at an air outlet, and targeted forced convection heat dissipation of a chip heat source is realized. According to the device, the ultrasonic technology and the heat dissipation technology are combined, the whole device is simple in structure, free of moving parts and low in noise, and various heat dissipation requirements can be met in an array mode.

The invention discloses a metal-air flow battery device based on an ultrasonic air focusing method. A metal-air flow battery belongs to the technical field of mutual crossing of ultrasound and electrochemistry and comprises a piezoelectric plate, a piezoelectric plate and acoustic lens fixing support, an acoustic lens, a metal-air flow battery fixing platform, a connecting platform of the whole device, a metal-air flow battery unit, an electrolyte inlet pipe and an electrolyte outlet pipe. According to the device, a sound field generated by ultrasound acts on the surface of the cathode electrode, so that sound pressure and sound stream jointly act on a three-phase reaction interface, and the oxidation-reduction reaction rate at the three-phase reaction interface is increased. The battery device comprises a piezoelectric plate, a piezoelectric plate driving power supply, an electrolytic bath, a metal anode, an air cathode, an acoustic lens and a peristaltic pump, the device can be combined with other traditional methods for improving the performance of the metal-air battery; the device for improving the performance of the battery can be used as an external component and does not influence the internal structure and the stability of the battery.

The invention relates to a device for applying shock waves to an animal or human body, comprising a shock wave source arranged in a housing. The shock wave source is focused on a point. The device comprises an acoustic lens (13) configured such that a width of a focus of the shock waves generated by the shock wave source in the focal plane is at least twice as wide along a first transverse axis extending in the focal plane as along a second transverse axis extending in the focal plane in a manner perpendicular to the first transverse axis. The invention further relates to a gel cushion having an acoustic lens contained therein for detachable arrangement on a device for generating shock waves.

The invention discloses a vortex transmitting device for quickly constructing a focused vortex acoustic beam, which comprises an excitation signal circuit, a circular transducer, a lower discrete acoustic lens and an upper discrete acoustic lens, through the design of the lenses, any order vortex acoustic beam with topological charge of-3 to + 3 can be expected to be generated in an underwater acoustic communication system; the flexibility and adaptability of communication are improved. The invention provides an innovative solution for the development of an underwater acoustic communication technology, has important technical significance and application potential, not only obviously enhances the stability and anti-interference capability of the signal, but also ensures that the signal keeps high integrity during long-distance transmission in a complex underwater environment.

An ultrasound probe lens, the ultrasound probe lens comprising: a lens body comprising a solid material extending outwardly from an optical lens axis to a periphery; an inner surface of the lens body; and an outer surface of the lens body. The thickness of the lens body measured from the inner surface to the outer surface varies from the optical lens axis to the periphery such that the lens body is configured with an inner optical profile and an outer optical profile to phase modulate ultrasonic waves incident on the lens body to reduce reverberation.

The invention relates to the technical field of additive manufacturing, in particular to a photocuring printing scattering suppression method and system based on acousto-optic modulation. According to the method, in the photocuring printing process, an acousto-optic modulation device is used for generating a focused ultrasonic field in a printing material, specific refractive index distribution is formed in the material based on the photoelastic effect, and therefore a refractive index regulation and control area used for restraining and guiding scattered light propagation is constructed in a local space; therefore, the scattering effect is suppressed, and the forming precision and the structural fidelity are improved. The system comprises a photocuring device, a light source, a printing platform and an acousto-optic modulation device used for achieving the method, the acousto-optic modulation device is composed of an ultrasonic transducer and an acoustic lens, and the acousto-optic modulation device forms a focusing sound field under external excitation and works in cooperation with the light source. The method is suitable for photocuring printing of various high-scattering light-sensitive composite materials, comprises material systems containing particles, cells or components with remarkable refractive index difference, and has good material adaptability.

The invention discloses an ultrasonic focusing probe. The ultrasonic focusing probe comprises a shell, a piezoelectric wafer, a spherical acoustic lens, a functional layer and a conducting medium, an accommodating space is formed in the shell; the piezoelectric wafer is arranged at the upper part of the accommodating space and is connected with a wire; the spherical acoustic super lens is coaxially arranged below the piezoelectric wafer, and a gap is formed between the spherical acoustic super lens and the piezoelectric wafer; the functional layer is arranged at the lower end of the shell and is constructed into the lower end surface of the shell; and the conductive medium is filled in the accommodating space and wraps the spherical acoustic super lens. According to the ultrasonic focusing probe, the spherical acoustic super lens is adopted, the focus width is narrower, and the transverse resolution of ultrasonic imaging can be improved. The focus energy of the spherical acoustic super lens is larger, and the focusing energy gain reaches more than 20dB, so that the contrast ratio of ultrasonic imaging can be improved. The spherical inner core and the spherical outer shell form a core-shell structure, and the focal length and the focal width of the ultrasonic focusing probe can be changed through the sizes of the spherical inner core and the spherical outer shell.

The invention provides a design method and device for an electromagnetic focusing shock wave acoustic lens, and the method comprises the steps: inputting initial design parameters into an acoustic mathematical model, and carrying out the building of a three-dimensional model of the electromagnetic focusing shock wave acoustic lens, and obtaining a three-dimensional model of the acoustic lens; obtaining a sound pressure time domain curve of each measurement point outside the electromagnetic focusing shock wave sound lens through finite element simulation, and taking the measurement point with the highest sound pressure amplitude in the plurality of measurement points as a simulation focus position; shock wave parameters and a shock wave focal region size are calculated based on the sound pressure time domain curve of each point outside the electromagnetic focusing shock wave sound lens; and determining the thickness of the acoustic lens, the inner curve of the acoustic lens and the outer curve of the acoustic lens as target design parameters of the electromagnetic focusing shock wave acoustic lens so as to manufacture the electromagnetic focusing shock wave acoustic lens through the target design parameters. Through the method and the device, the design precision of the electromagnetic shock wave focusing acoustic lens is improved.

The invention discloses a depth dynamic focusing acoustic lens device and method based on cascade acoustical holography. Comprising a dynamic focusing acoustic lens cascading structure which is arranged in a liquid filling cavity and is mainly formed by cascading two acoustic holographic phase plates in the axial direction, one acoustic holographic phase plate is kept fixed, the other acoustic holographic phase plate moves freely, and dynamic movement of a focus in the depth direction is achieved through axial movement and circumferential rotation; each phase holographic plate is composed of a plurality of microstructure units with different thicknesses in a close array mode, the two sides of each phase holographic plate are concave-convex and flat, and the concave-convex planes face the interior of the cavity. According to the invention, dynamic sound energy focusing can be simply and conveniently realized at a plurality of positions, so that detection and imaging of a detected object on different planes are realized, and the detection efficiency is greatly improved; when in use, the structure can be directly and tightly attached to the surface of a conventional ultrasonic transducer and the surface of a measured component, and scanning and medical treatment of different plane targets can be achieved through simple movement and rotation between holographic plate components in the structure.

The invention belongs to the technical field of acoustic lenses, and discloses a high-frequency vortex sound field lens which comprises a stainless steel sheet substrate, the center area of the substrate is a solid area, and a periodic spiral line hollow structure is formed on the periphery of the solid area through laser processing; the area where the spiral line hollow structure is located allows sound waves to pass without shielding, and the solid area blocks sound wave propagation. The ultra-short pulse laser micromachining technology is adopted, the spiral line hollowed-out structure with the screw pitch, the line width and the spiral angle strictly matched with the high-frequency sound wave wavelength can be accurately etched in the surface of the stainless steel sheet, the spiral phase gradient is accurately constructed through the acoustic impedance difference of hollowed-out area conduction-solid area blocking, and the spiral phase gradient is accurately measured. The problem of phase error amplification under high frequency is effectively suppressed, the orbital angular momentum transfer efficiency is improved to 90% or above, and stable generation of a high-frequency vortex sound field is successfully realized.

The application provides an artificial sound structure lens ultrasonic physiotherapy transducer, an ultrasonic output end of the transducer (2) is fixed at a positioning groove at a bottom end of an artificial sound structure lens, and the ultrasonic output end is closely combined with the artificial sound structure lens; a ring-shaped groove is distributed at an output end of the artificial sound structure lens; epoxy resin (4) is filled in the ring-shaped groove, and the filling height of the epoxy resin is different between different regions of the filling area; the artificial sound structure lens takes the epoxy resin filled in the ring-shaped groove as a phase adjusting medium, adjusts the phase delay of ultrasonic waves by changing the filling height proportion of the phase adjusting medium in the ring-shaped groove, and changes the focal point position of the artificial sound structure lens; and the application can solve the problems of insufficient sound energy of the ultrasonic physiotherapy focal point position, the shallow ultrasonic physiotherapy focal point position, the relatively fixed focal point position of the ultrasonic physiotherapy transducer, and the heating of the contact surface after long-time use.

Flexible acoustic sensor systems using an acoustic lens are disclosed. In some embodiments, an apparatus may include: a platen having an imaging portion associated with a surface of the platen; a flexible substrate including an acoustic sensing element; and an acoustic lens disposed between the platen and the flexible substrate, the acoustic lens having a curvature configured to expand a propagation angle range of one or more acoustic signals emitted from the acoustic sensing element such that an area associated with the imaging portion is larger than an area associated with the acoustic sensing element; wherein the flexible substrate is constructed to conform to the curvature of the acoustic lens. In some implementations, the platen may include a curved platen having a curved surface configured to contact the body part of the user; and the flexible substrate may be constructed to conform to a curvature of the curved platen.

The application provides a dual-frequency focusing ultrasonic transducer, which comprises a shell and sequentially arranged acoustic lens, matching layer, piezoelectric layer and backing layer, the piezoelectric layer comprises piezoelectric wafer I and piezoelectric part II, the piezoelectric part II comprises piezoelectric wafer II and a dematching part, the piezoelectric wafer I and the piezoelectric wafer II are side by side to form a flat upper surface of the piezoelectric layer to be focused by the acoustic lens; a preparation method comprises the following steps: the piezoelectric wafer I and the piezoelectric wafer II are side by side and the top surfaces are aligned to form a circular flat surface of the piezoelectric layer; the dematching part is bonded below the piezoelectric wafer II to form the piezoelectric layer; a coaxial cable is connected to the piezoelectric layer; the piezoelectric layer connected with the coaxial cable is fixed in the shell, the backing layer is arranged on the lower surface of the piezoelectric layer, and the acoustic lens and the matching layer are sequentially arranged on the upper surface, and the transducer is obtained. The transducer of the application only needs two same piezoelectric wafers, and the dual-frequency function is realized by adding the dematching part, and the treatment effect is good.

The invention belongs to the field of acoustic devices, and particularly relates to a cross-medium sound transmission enhancement acoustic lens. Comprising a circular cover plate, a cylindrical supporting frame and a positioning ring, a plurality of unit holes are formed in the circular cover plate, and the circular cover plate is fixedly arranged at the end of the supporting frame; and the positioning ring is fixed on the inner wall of the supporting frame. According to the invention, through the parallel arrangement of the plurality of unit holes, the sound lens realizes the cross-medium sound penetration enhancement design; the transmission amplitude of the underwater acoustic lens at multiple frequencies is increased by more than two times, and the transmission gain exceeds 6dB; the working stability of the acoustic lens is further improved; the acoustic lens designed by the invention is simple in structure, a complicated design method is not needed, large-scale manufacturing and application are facilitated, and the cover plate is of an ultrathin structure, so that the requirements of compact structure and light weight can be met; according to the invention, the simple structure can realize cross-medium sound penetration enhancement, can realize cross-medium transmission of sound waves, and has wide application prospects in the fields of underwater detection, cross-medium communication and the like.

Provided are an acoustic wave probe, an acoustic wave measurement device, and an ultrasonic diagnostic device, the acoustic wave probe having a base material, an intermediate layer on the base material, and an acoustic lens layer on the intermediate layer, the intermediate layer being a layer containing a siloxane compound having a constituent component derived from a hydrolyzed silicate compound, the acoustic lens layer is a layer obtained by curing a room-temperature-curable silicone, and the room-temperature-curable silicone contains a structural unit having a phenyl group.

This document discloses a needle shield for an ultrasound probe. The shield fits snugly with the ultrasound probe head and any associated structures, protecting it from accidental damage such as needlesticks. Furthermore, the shield includes a guide wedge that allows the user to stabilize the probe at an angle relative to the skin surface. This allows the needle to enter the target vessel perpendicularly without the probe obstructing the needle. Furthermore, the shield includes an acoustic lens to modify the acoustic beam and compensate for the angular position of the probe head.

A speaker apparatus comprising: a speaker comprising a diaphragm for transmitting an audio output; at least one light source; and an acoustic lens coupled to the speaker and defining a first opening to enable the first audio output to be transmitted from the first opening at a first predetermined angle, wherein the acoustic lens comprises at least one first light guide extending through the first opening, each of the at least one light source is coupled to at least one of the at least one first light guide such that light emitted by the light source is internally reflected along the respective at least one first light guide, and each of the at least one first light guide comprises a plurality of extraction elements arranged continuously along a length of the light guide, each of the plurality of extraction elements is configured to direct light emitted by a respective one of the at least one light source and internally reflected along the respective at least one first light guide towards a direction away from the speaker.

At least one loudspeaker module having a loudspeaker driver mounted inside a headrest behind a lateral non-contact surface of the headrest and is oriented so that a central axis of radiation is along a lateral direction, x, of the headrest. A waveguide has an opening in the lateral direction, x, and an exit opening in a forward direction, y. The forward direction, y, is generally perpendicular to the lateral direction, x. The waveguide is mounted to the loudspeaker driver so that the opening aligns with a radiating surface of the loudspeaker driver and the exit opening extends along the lateral non-contact surface of the headrest exteriorly to the headrest. The opening is vertically oriented on the lateral non-contact surface of the headrest so that a central axis of radiation of the waveguide is directed toward the forward direction, y. The loudspeaker has an acoustic lens above the loudspeaker driver.

The invention provides a metamaterial energized phased array transducer and a method for three-dimensionally regulating and controlling a focus, the transducer comprises a phased array for outputting ultrasonic waves, a rotatable metamaterial acoustic lens is arranged at the ultrasonic wave output end of the phased array, the metamaterial acoustic lens comprises a plurality of dielectric layers, and the dielectric layers are arranged on the phased array. The ultrasonic focus sound pressure of the transducer is improved by focusing ultrasonic waves through the metamaterial acoustic lens, and when the ultrasonic focus of the transducer deflects, the focus position of the metamaterial acoustic lens moves along with the ultrasonic focus of the transducer through rotation of the metamaterial acoustic lens. According to the invention, the improvement of the focus sound pressure can be realized without increasing the side lobe sound pressure when the sound focus deflects.

The invention discloses an ultrasonic focusing type deep rock breaking auxiliary device and a dynamic excitation method thereof. The device comprises a fastening propelling device, a rock inherent frequency detection system and an ultrasonic focusing excitation system which are arranged outside a drilling machine in a sleeving manner. Wherein the ultrasonic focusing excitation system is used for converging ultrasonic energy into a rock mass in front of a drill bit through a plurality of focusing acoustic lenses which are annularly arranged and can independently rotate. During working, the inherent frequency of a rock mass is detected firstly, ultrasonic waves with the corresponding frequency are generated, then the refraction angle of the ultrasonic waves is adjusted by dynamically rotating the focusing acoustic lens, a focusing point is made to move forwards synchronously along with increase of the drilling depth, and continuous and accurate presplitting of deep rock in front of a drill rod is achieved. The rock strength can be effectively reduced, the rock breaking efficiency is improved, meanwhile, the hole wall completeness is protected, and drilling tool damage is reduced.

To provide an ultrasonic endoscope capable of reducing a diameter of the endoscope while ensuring visibility of the tip.SOLUTION: An ultrasonic endoscope 1 includes: a tip 34 disposed on a tip side of an insertion part; an ultrasonic transducer 50 provided at the tip 34 for emitting an ultrasonic wave toward one side of a first direction orthogonal to a longitudinal axis direction; an acoustic lens 52 provided on an external surface of the ultrasonic transducer 50; and an imaging part 300 arranged more on a proximal end side in the longitudinal axis direction than the acoustic lens 52. When, viewed in a first direction, a straight line passing through a central part of the acoustic lens 52 in the longitudinal axis direction and a second direction orthogonal to a first direction and extending in the longitudinal axis direction is represented as a reference line RL, the imaging part 300 is disposed at a position offset to one side of the second direction from the reference line RL when viewed in the first direction and an optical axis OA2 of the imaging part 300 intersects with the reference line RL.SELECTED DRAWING: Figure 3

An ultrasound probe includes: vibrators arranged in a left-right direction; a support portion that supports a second surface opposite to a first surface located on a side on which the vibrator transmits and receives an ultrasound wave; an acoustic lens disposed on a side opposite to a support portion side with respect to the vibrator; an acoustic matching portion disposed between the vibrator and the acoustic lens; and a connection portion that connects the support portion and at least a partial region of one or both of a first end surface and a second end surface to each other, the first end surface and the second end surface being defined by both end surfaces of the acoustic matching portion in a front-rear direction intersecting the left-right direction and an up-down direction. The support portion and the connection portion each have a thermal conductivity higher than that of the acoustic lens.

At least one loudspeaker module having a loudspeaker driver mounted inside a headrest behind a lateral non-contact surface of the headrest and is oriented so that a central axis of radiation is along a lateral direction, x, of the headrest. A waveguide has an opening in the lateral direction, x, and an exit opening in a forward direction, y. The forward direction, y, is generally perpendicular to the lateral direction, x. The waveguide is mounted to the loudspeaker driver so that the opening aligns with a radiating surface of the loudspeaker driver and the exit opening extends along the lateral non-contact surface of the headrest exteriorly to the headrest. The opening is vertically oriented on the lateral non-contact surface of the headrest so that a central axis of radiation of the waveguide is directed toward the forward direction, y. The loudspeaker has an acoustic lens above the loudspeaker driver.

The present disclosure is related to an ultrasonic module and an ultrasonic probe having the same. The ultrasonic module comprises a frame component, an ultrasonic oscillating component, an acoustic lens and an adhesive component. The ultrasonic oscillating component is accommodated in the frame component. The acoustic lens is disposed on the frame component. The adhesive component is accommodated in the frame component. The frame component is disposed between the acoustic lens and the ultrasonic oscillating component. The frame component has a first opening 10 formed at one end adjacent to the acoustic lens. The ultrasonic oscillating component is disposed on a side of the first opening close to the adhesive component. The acoustic lens is in contact with the ultrasonic oscillating component through the first opening.

The invention discloses a special intelligent color ultrasound probe for intravenous injection, which comprises a probe shell, a handle is fixedly mounted at one end of the probe shell, a probe body is fixedly mounted at the other end of the probe shell, a nozzle type positioning pen is mounted at one end of the probe body, and a button connected with the nozzle type positioning pen is fixedly mounted in the middle of the probe shell. The surface of the probe shell is fixedly provided with a probe system body, the probe body comprises a transducer and an acoustic lens, and one side of the transducer is connected with one side of the acoustic lens. Compared with traditional large-scale ultrasonic equipment, the designed probe is small in size, light in weight, convenient to carry about by medical staff, and capable of being used instantly at the bedside and in an infusion room; the patient does not need to be transferred to an ultrasonic examination room, so that the working efficiency and convenience are improved; the probe adopts a human engineering design and is convenient to hold and operate by a single hand; a nozzle type positioning pen is arranged, so that positioning marking is simpler, more convenient and faster, and extra marking tools are not needed.