63 results about "Acoustic lens" patented technology

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.

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 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 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.

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.

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.

The application discloses a fine sound beam ultrasonic probe and a design method, and relates to the technical field of nondestructive testing. The probe comprises a probe connector, a probe shell, a cable, a piezoelectric element and a combined acoustic lens. The cable is connected between the probe connector and the piezoelectric element capable of emitting and receiving ultrasonic waves, and is used for conducting high-frequency alternating electric pulses to the piezoelectric element. The combined acoustic lens is installed at the bottom of the piezoelectric element, is used for receiving the ultrasonic beam generated by the piezoelectric element, converging the ultrasonic beam and controlling the ultrasonic propagation direction, so that the ultrasonic beam forms an ultrasonic beam which is focused first and then propagates in parallel. Through implementation of the technical scheme, the technical problems of low detection precision of a conventional ultrasonic probe and low detection efficiency of an existing focused probe can be solved, the defect area or the indication length can be accurately measured, the probe is suitable for detecting internal defects of a thin-walled part and near-surface defects of a medium-thickness part, and the probe has the advantages of high-precision detection and high detection efficiency.

The invention discloses an electromagnetic acoustic lens focusing shock wave treatment head and device, the treatment head comprises a base, an acoustic lens embedded in one end of the base, a vibrating reed and an electromagnetic disc, the vibrating reed and the electromagnetic disc are located in the base, and the vibrating reed is located between the acoustic lens and the electromagnetic disc. One side face of the vibrating reed is in curve contact with the inner surface of the acoustic lens, the other side face of the vibrating reed is attached to the surface of a coil of the electromagnetic disc, and cooling liquid is contained in a space defined by the vibrating reed, the acoustic lens and the base. The sound lens comprises an inner surface curve, an outer surface curve and a transition curve connecting the inner surface curve and the outer surface curve, and the outer surface curve of the sound lens is determined according to the contact requirement of a treatment part and the sound lens so as to be matched with the treatment part. An inner curve and a transition curve are calculated according to the Snell theorem and the wave interference principle, and the acoustic lens meeting the treatment requirement is designed in combination with algorithms such as finite element analysis.

The invention discloses an acoustic beam topological charge measurement system for orbital angular momentum, which comprises an acoustic two-dimensional phased array circuit, an acoustic two-dimensional emission array, a lower-layer spiral acoustic lens, an upper-layer spiral acoustic lens and a receiving hydrophone. Therefore, the orbital angular momentum of the incident vortex acoustic beam is reset, and the measurement of the topological charge of the incident orbital angular momentum acoustic beam is completed by combining the amplitude of the acoustic signal received by the receiving hydrophone. The method provides an innovative solution for the measurement of the topological charge of the underwater orbital angular momentum sound beam, has important technical significance and application potential, not only simplifies the topological charge measurement system of the orbital angular momentum sound beam, but also significantly improves the topological charge detection efficiency of the orbital angular momentum sound beam.

The present invention provides an ultrasonic probe with a novel configuration, comprising an acoustic lens made of polymethylpentene with one concave surface, and an acoustic propagation medium in the concave space resulting from the concave surface. [Solution] The ultrasonic probe 10 includes an ultrasonic propagation medium 11e which is made of a gel-like urethane having an attenuation rate of 0.5 to 4 dB / mm, an acoustic impedance of 1.45 to 1.65 MRayl, and a sound velocity slower than the sound velocity of polymerylpentene. However, the attenuation rate is measured at an ultrasonic frequency of 10 MHz. The gel-like urethane is made of a mixture of soft urethane and a plasticizer with a specific gravity of 0.9 to 1.4 g / cc.

The invention relates to an ocean vibroseis energy enhancement structure based on a Fresnel lens, and relates to the technical field of ocean exploration. Comprising a marine vibroseis body, a Fresnel acoustic lens and a second lens. The Fresnel acoustic lens and the second lens are located on the two sides of the ocean vibroseis body respectively. The Fresnel acoustic lens is used for gathering energy on the two sides of the ocean vibroseis body to one side of the ocean vibroseis body, and the second lens is used for gathering energy, adjusting the signal propagation direction, eliminating the cosine error of the Fresnel acoustic lens structure and optimizing the quality of the vibration signal of the vibroseis. According to the method, the energy level output by the seismic source can be effectively improved, the seismic source exploration and communication distance is increased, and the method has important application value and development prospect.

The flaw detection device comprises a rotary objective table, a detection cavity is in sealed butt joint with the rotary objective table, and a high-pressure gas medium with acoustic impedance higher than that of air can be injected into the detection cavity; a magnetic suspension acoustic lens dynamic focusing array module is mounted at the top of the detection chamber, a sound wave radiation surface of the magnetic suspension acoustic lens dynamic focusing array module is vertically downward and directly faces the rotary objective table, and a physical emission aperture of the magnetic suspension acoustic lens dynamic focusing array module has dynamic reconstruction capability; the magnetic suspension acoustic lens dynamic focusing array module is electrically connected with a multi-channel coherent excitation and data acquisition module, and a global optical interference measurement and position feedback module is mounted on the side wall of the magnetic suspension acoustic lens dynamic focusing array module. The invention solves the problems of low detection efficiency and low precision due to the adoption of probe mechanical point-by-point scanning in the conventional brake disc ultrasonic flaw detection.

The application discloses a Fresnel spiral acoustic lens and a method for realizing non-invasive acoustic twist ultrasonic acupuncture, and belongs to the field of ultrasonic treatment equipment. The Fresnel spiral acoustic lens is composed of a group of spiral structures with gaps, only includes oppositely arranged incident surfaces and exit surfaces, and the surface opposite to the emitting end of an ultrasonic transducer is the incident surface, which is used for ensuring that the plane acoustic wave emitted by the ultrasonic transducer is vertically incident; and the exit surface is a spiral phase modulation surface of the emitted acoustic wave. The ultrasonic acupuncture instrument made of the acoustic lens comprises the ultrasonic transducer, the Fresnel spiral acoustic lens, a focusing acoustic lens and a rotating disc. The ultrasonic acupuncture instrument further comprises a pulse emission receiver, a micro stepping motor, a rotating shaft and a real-time monitoring device. Through the phase modulation effect of the Fresnel spiral acoustic lens on the incident acoustic wave, the focusing vortex acoustic field with an orbital angular momentum is generated, non-contact non-invasive dynamic twist stimulation on the acupoint of the human body is realized, and the application has the advantages of simple structure, convenient control, accurate focusing, high safety and the like.

This application relates to an acoustic lens, an ultrasonic probe, and an ultrasonic imaging device. The acoustic lens has a front surface, and the curvature of the front surface includes a central region and side regions located on both sides of the central region. The focal length of the central region is greater than that of the side regions. This acoustic lens adjusts the focal length in sections to achieve multi-dimensional, multi-point focusing. Ultrasonic waves passing through the central region are focused at a deeper level of the target, while those passing through the side regions are focused at a shallower level. Furthermore, the beam narrowing is significant, enabling the acquisition of clear images from shallow to deep within complex structures, thus improving the quality of ultrasonic images.

The application relates to the technical field of Fresnel acoustic lens application, and provides a composite Fresnel acoustic lens, a design method and related equipment. The composite Fresnel acoustic lens comprises at least two groups of coaxial multi-focus Fresnel zone plates, the at least two groups of coaxial multi-focus Fresnel zone plates are stacked after being radially translated by a set distance, at least three non-coaxial ultrasonic focal points are generated in a three-dimensional space, and the composite Fresnel acoustic lens can be used for transcranial ultrasonic stimulation or treatment; wherein the coaxial multi-focus Fresnel zone plate comprises a multi-layer lens structure which is nested together, and the multi-layer lens structure comprises a frame area and an ultrasonic transmission medium area. The method of stacking multiple groups of coaxial multi-focus Fresnel zone plates is used to simultaneously focus multiple different-axis and different-depth ultrasonic target points, and the limitation of a limited coverage range of a traditional single-focus or coaxial double-focus is overcome.

The invention belongs to the technical field of ultrasonic transducer packaging and acoustic device manufacturing, and particularly relates to a low-stress integrated packaging technology and structure for a two-dimensional CMUT ultrathin film array, and the structure comprises a printed circuit board which is provided with the two-dimensional CMUT ultrathin film array. The surface of the printed circuit board is connected with a silicone rubber curvature acoustic lens serving as a packaging layer on one side of the emission surface of the two-dimensional CMUT ultrathin film array, the silicone rubber curvature acoustic lens covers the emission surface of the two-dimensional CMUT ultrathin film array, and the focus of the silicone rubber curvature acoustic lens is located on the two-dimensional CMUT ultrathin film array. The silicone rubber curvature acoustic lens further forms edge covering on the two-dimensional CMUT ultrathin film array on the printed circuit board along the surface periphery of the two-dimensional CMUT ultrathin film array, and sealing of the two-dimensional CMUT ultrathin film array is achieved. High-density filler, a light scattering film or a multi-layer gradient matching layer does not need to be adopted, the process is simplified, the stress is extremely low, and stable performance, safety and reliability of the CMUT array are ensured.

This invention discloses a modeling and optimization method for an ultrasonic enhancement device. It analyzes the device's acoustic field signal, designs a three-dimensional geometric configuration including a concave energy-concentrating structure, a metamaterial microstructure, and an acoustic lens structure, sets corresponding material and geometric parameters for each structure, evaluates the performance of the current configuration through nonlinear acoustic field simulation, and accurately simulates the simulation results of the heterogeneous interface. Then, it inputs the main field and adjoint field dual-channel solutions to obtain the sensitivity information of the design variables. Furthermore, it constructs a deep neural network model, using the geometric parameters of the metamaterial microstructure as input and the equivalent acoustic response as output, to achieve real-time performance prediction and dynamic impedance matching optimization. Combined with objective function evaluation and constraint projection mechanisms, a simulation optimization feedback loop is formed, iteratively outputting the optimal manufacturable configuration. The device designed in this invention has advantages such as being passive, low-cost, and highly adaptable, and is suitable for complex industrial applications such as partial discharge monitoring of power equipment and fault diagnosis in rail transit.

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 fatigue monitoring system and method for detecting skin impedance change based on a sensor, and the system comprises a plurality of sensor units, each sensor unit comprises an acoustoelectric signal conversion module, an electrode, a piezoelectric crystal, a matching layer, and an acoustic lens; the integrated processing unit is connected with the sensor unit and used for receiving the electric signals from the sensor unit and processing and analyzing the electric signals; the display unit is connected with the integrated processing unit and used for displaying the fatigue state information of the driver; the alarm unit is connected with the integrated processing unit and used for giving an alarm when the fatigue state of the driver is detected; the sensor units are evenly distributed on the section of the steering wheel, each sensor unit is connected with the integrated processing unit through the wire harness, and the wire harness comprises a plurality of strands of wires and is used for transmitting electric signals and a power source. According to the fatigue monitoring system and method for detecting the skin impedance change based on the sensor, the fatigue state of a driver can be accurately monitored, and the road safety is improved.

An ultrasound probe includes a connector and a probe head that includes a mount located in a tip part of the probe head, various linear matrices of transducers that emit acoustic waves with a given central wavelength and detect backscattered acoustic waves. The linear matrices are electrically connected to the connector, wherein each linear matrix from the linear matrices of transducers includes a first side along a first direction and a second side along a second direction. The second side is smaller than the first side. The linear matrices are fixed to the mount and juxtaposed on the mount with the first sides adjacent. Each linear matrix from the linear matrices of transducers is covered with a single cylindrical acoustic lens that focuses the acoustic waves emitted by the linear matrix. Each cylindrical acoustic lens includes a cylindrical axis substantially parallel to the first direction.

A device for applying shock waves to an animal or human body is shown and claimed, comprising a shock wave source arranged in a housing. The shock wave source is focused on a point. The device includes an acoustic lens configured such that the width of a focus of the shock waves generated by the shock wave source in the focal plane along a first transverse axis extending in the focal plane is at least twice as wide as along a second transverse axis extending in the focal plane perpendicular to the first transverse axis. Furthermore, a gel pad with an acoustic lens contained therein for detachable arrangement on a device for generating shock waves is shown and claimed.

The application makes in-depth research on the field of sound wave front regulation in three-dimensional cases. A special acoustic lens is constructed by using a metasurface, so that the required target sound field is obtained, and the sound focusing, sound splitting and sound invisibility phenomena are realized. The research on acoustic lens is a challenging and innovative field. In the past, the research on acoustic lens was hindered by many factors such as too large material structure, complex transmission wave phase regulation and the like. The application designs a high-transmittance curved waveguide structure, and the length of the straight pipe at the neck of the curved waveguide can be adjusted to realize accurate control of the phase of the transmitted wave, and a complex internal structure is not needed. At the same time, the phase shift in the whole 2pi range can be realized by 8 basic units. Based on this, according to the theoretical calculation results, the 8 basic units are freely combined to construct a specific metasurface, so that effects such as sound focusing, acoustic lens, invisibility cloak and the like can be realized.

The invention discloses an underwater high-frequency multifunctional focusing lens based on a reflection-type acoustic metasurface, the focusing lens is arranged in front of a plane sound source at intervals, the acoustic lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens, and each lens is arranged on the outer side of the previous lens. The whole lens is composed of five independent lenses. Therefore, the plane wave generated by the plane sound source interacts with the surface of the lens, two focusing sound signals with different focal lengths can be formed by different structures on the two surfaces of the lens, and multi-point focusing and uniform scattering can be formed by changing the assembly mode of the lens. Different underwater detection functions can be realized, a plurality of data can be obtained, the working efficiency is greatly improved, and the manufacturing cost is reduced.

A portable ultrasound device (100) for non-invasively imaging a selected sub-cutaneous structure, comprises: (a) a plurality of parallel transducer arrays (102) of transducer elements, each array (102) being obliquely angled and each transducer element comprising a transmitter transducer and a receiver transducer for continuously transmitting acoustic waves at ultrasonic frequency in a carrier signal having a predetermined frequency range toward a patient's body and continuously receiving echo signals in a predetermined frequency range from the patient's body following reflection of ultrasound energy, the plurality of arrays (102) of transducer elements enabling imaging of the sub-cutaneous structure (1104, 1105) in multiple transverse and lateral planes; (c) an acoustic lens (103) for manipulating transmission of the acoustic waves; and (d) a transducer controller (104) for operating in continuous wave doppler mode and communicable with a processor (109) for processing received echo signals from the transducer arrays (102). The transducer controller (104) controls a scanning order and scanning rate of transducer elements within the plurality of transducer arrays (102) for generating and processing a Doppler signal enabling imaging of the sub-cutaneous structure (1104, 1105) on the device display (110).

The invention discloses an ultrasonic enhancement device modeling and optimizing method, which comprises the following steps of: analyzing a sound field signal of equipment, designing a three-dimensional geometrical configuration of the device, including a concave surface energy gathering structure, a metamaterial microstructure and an acoustic lens structure, setting corresponding material parameters and geometrical parameters of each structure, and evaluating the performance of the current configuration through nonlinear sound field simulation. The method comprises the following steps of: constructing a metamaterial microstructure, accurately simulating a simulation result of a heterogeneous interface, then inputting two channels of a main field and an adjoint field to solve and obtain sensitivity information of a design variable, and by constructing a deep neural network model, taking a metamaterial microstructure geometric parameter as input and taking equivalent acoustic response as output, realizing real-time performance prediction and dynamic impedance matching optimization. And a simulation optimization feedback closed loop is formed by combining objective function evaluation and a constraint projection mechanism, and an optimal manufacturable configuration is iteratively output. The device designed by the invention has the advantages of being passive, low in cost, high in adaptability and the like, and is suitable for complex industrial application scenes such as power equipment partial discharge monitoring, rail transit fault diagnosis and the like.

The utility model relates to the probe structure field of mine ultrasonic detector relates to a kind of probe structure of mine ultrasonic surrounding rock fissure detector, including measuring rod, detector probe and acoustic lens mounting frame and probe installation component, the threaded portion on the measuring rod is equipped with detector probe, in the utility model, the limiting hole thread of guide rod is passed through with buckle bolt, so that guide rod and protective frame are screwed together by buckle bolt thread, acoustic lens protective shell can be on guide rod by sliding sleeve, sliding, acoustic lens protective shell can be slidably protected on detector probe and acoustic lens mounting frame, canvas connecting cover can be protected at the connecting place of detector probe and acoustic lens mounting frame, can dustproof and insulation protection is carried out to detector probe and acoustic lens mounting frame, canvas connecting cover and acoustic lens protective shell play anti-aging or joint wear to mine probe sealant, extend the service life of mine probe, avoid probe maintenance in mine.