Follow us on Twitter
twitter icon@FreshPatents


Acoustic Wave patents

      

This page is updated frequently with new Acoustic Wave-related patent applications.




 Method of using a parabolic equation model for range-dependent seismo-acoustic problems patent thumbnailMethod of using a parabolic equation model for range-dependent seismo-acoustic problems
A method of modeling an aquatic environment or locating an acoustic source in the aquatic environment. A range-dependent medium is approximated in terms of a series of range-independent regions and obtaining single-scattering solutions across the vertical interfaces between regions.
Government Of The United States Of America, As Represented By The Secretary Of The Navy


 Photoacoustic apparatus,  controlling photoacoustic apparatus, and program patent thumbnailPhotoacoustic apparatus, controlling photoacoustic apparatus, and program
A photoacoustic apparatus includes a light source configured to generate a plurality of light beams having wavelengths different from each other, a conversion element configured to receive a photoacoustic wave that is generated in a subject in response to being illuminated with the respective light beams having wavelengths different from each other and output a signal for each wavelength, an information acquisition unit configured to acquire information in terms of a concentration of a substance existing in the subject by using the signal for each wavelength, and a specifying unit configured to specify a coefficient and instruct the information acquisition unit to use the specified coefficient in acquiring the information in terms of the concentration, wherein the specifying unit specifies, as the coefficient, a value representable by a formula including an amount of light having each wavelength, and wherein the information acquisition unit acquires information in terms of the concentration by using the coefficient specified by the specifying unit and the signal for each wavelength.. .
Canon Kabushiki Kaisha


 Device and  frequency-domain thermoacoustic sensing patent thumbnailDevice and frequency-domain thermoacoustic sensing
The invention relates to a device (100) and a corresponding method for thermoacoustic sensing, in particular thermoacoustic imaging, the device (100) comprising: a) an irradiation unit (10) configured to generate electromagnetic and/or particle energy exhibiting a first modulation, the first modulation comprising at least one frequency and to continuously emit the energy towards a target (1), whereby acoustic waves are continuously generated in the target, the acoustic waves exhibiting a second modulation, the second modulation comprising the at least one frequency and/or a harmonic frequency of the at least one frequency; b) a detection unit (20) configured to simultaneously detect the acoustic waves exhibiting the second modulation while the energy exhibiting the first modulation is being continuously emitted towards the target (1); and c) a processing unit (30) configured to determine at least one thermoacoustic value of an amplitude and/or a phase of the second modulation of the acoustic waves at the at least one frequency and/or at a harmonic frequency of the at least one frequency. The invention allows for fast and economic thermoacoustic sensing, in particular imaging of a region of interest of an object..
Helmhol Tz Zentrum Muenchen Deutsches Forschungszentrum Fuer Etc.


 Evacuation of liquid from acoustic space patent thumbnailEvacuation of liquid from acoustic space
An acoustic module, such as a microphone or speaker module, includes an acoustic membrane that vibrates to produce acoustic waves and an acoustic cavity through which acoustic waves produced by the membrane travel. A liquid removal mechanism removes liquid from the acoustic cavity.
Apple Inc.


 Acoustic gesture recognition systems and methods patent thumbnailAcoustic gesture recognition systems and methods
Methods and circuitry for relatively low-speed bus time stamping and triggering for use in acoustic object and gesture detection and recognition are presented in this disclosure. A master device and slave devices can be interfaced via a communication link that includes a data line and a clock line.
Lattice Semiconductor Corporation


 Surface acoustic wave element patent thumbnailSurface acoustic wave element
A surface acoustic wave element includes: a first input wire; a first idt connected to the first input wire; a second input wire; a second idt connected to the second input wire; an output wire; and a third idt connected to the output wire and installed between the first idt and the second idt, wherein the first input wire, the second input wire and the output wire are adjacent to each other and withdrawn in a same direction, and a capacitance pattern for applying capacitance is connected at least either between the first idt and the third idt or between the second idt and the third idt.. .
Handy International Co., Ltd.


 Acoustic wave device including multiple dielectric films patent thumbnailAcoustic wave device including multiple dielectric films
An acoustic wave device comprises an idt electrode disposed above an upper surface of a piezoelectric substrate and includes a plurality of electrode fingers configured to excite a main acoustic wave. A first dielectric film made of an oxide is disposed above the upper surface of the piezoelectric substrate and covers the plurality of electrode fingers.
Skyworks Filter Solutions Japan Co., Ltd.


 Subject-information acquisition apparatus patent thumbnailSubject-information acquisition apparatus
A blind area is reduced by reducing an area between a subject and a receiver in which acoustic waves do not propagate. The present invention relates to a subject-information acquisition apparatus including a base; a subject holding member on the base; a receiver including a plurality of transducers and a support member on which the plurality of transducers are disposed; and a fluid-level adjusting mechanism configured in such a manner that an acoustic matching material in a space enclosed by the base, the subject holding member, and the receiver can be at a fluid level higher than a boundary between the subject holding member and the base..
Canon Kabushiki Kaisha


 Object information acquiring apparatus and control  the object information acquiring apparatus patent thumbnailObject information acquiring apparatus and control the object information acquiring apparatus
An object information acquiring apparatus comprises a receiver receiving an acoustic wave propagating inside an object and convert the acoustic wave into an electric signal; a scanning unit configured to causing the receiver to scan the object; a control unit configured to controlling operation of the scanning unit; a detection unit configured to detecting a status of the acoustic wave reception; and a processing unit for acquiring characteristic information on the inside of the object on the basis of the electric signal, wherein the control unit decides whether or not the operation of the scanning unit is changed, on the basis of a result of detection by the detection unit.. .
Canon Kabushiki Kaisha


 Stealth-dicing compatible devices and methods to prevent acoustic backside reflections on acoustic wave devices patent thumbnailStealth-dicing compatible devices and methods to prevent acoustic backside reflections on acoustic wave devices
Stealth-dicing-compatible devices and methods to prevent acoustic backside reflections on acoustic wave devices are disclosed. An acoustic wave device comprises a substrate having opposing top and bottom surfaces, where a first portion of the bottom surface has a higher roughness than a second portion of the bottom surface, and an acoustic resonator over the top surface of the substrate.
Rf Micro Devices, Inc.


Bulk acoustic wave (baw) device having roughened bottom side

A bulk acoustic wave (baw) resonator includes a substrate having a top side surface and a bottom side surface. A bragg mirror is on the top side surface of the substrate.
Texas Instruments Incorporated

Acoustic wave device and module

An acoustic wave device includes: a support substrate; a piezoelectric substrate bonded on an upper surface of the support substrate at room temperature and made of a different material from the support substrate; a comb-shaped electrode formed on an upper surface of the piezoelectric substrate and exciting an acoustic wave; and an amorphous layer formed between the support substrate and the piezoelectric substrate.. .
Taiyo Yuden Co., Ltd.

Bonded wafers and surface acoustic wave devices using same

A bonded wafer with low carrier lifetime in silicon comprises a silicon substrate having opposing top and bottom surfaces, the structure of the silicon in a top portion of the silicon substrate having been modified to reduce the carrier lifetime in the top portion relative to the carrier lifetime in portions of the silicon substrate other than the top portion; a piezoelectric layer bonded over the top surface of the silicon substrate and having opposing top and bottom surfaces separated by a distance t; and a pair of electrodes having fingers that are inter-digitally dispersed on the top surface of the piezoelectric layer in a pattern having a center-to-center distance d between adjacent fingers of the same electrode, the electrodes comprising a portion of a surface acoustic wave (saw) device. Modification of the top portion of the silicon substrate prevents the creation of a parasitic conductance within the top portion of the silicon substrate during operation of the saw device..
Rf Micro Devices, Inc.

Methods for fabrication of bonded wafers and surface acoustic wave devices using same

A method of fabricating a bonded wafer with low carrier lifetime in silicon comprises providing a silicon substrate having opposing top and bottom surfaces, modifying a top portion of the silicon substrate to reduce carrier lifetime in the top portion relative to the carrier lifetime in portions of the silicon substrate other than the top portion, bonding a piezoelectric layer having opposing top and bottom surfaces separated by a distance t over the top surface of the silicon substrate, and providing a pair of electrodes having fingers that are inter-digitally dispersed on a top surface of the piezoelectric layer, the electrodes comprising a portion of a surface acoustic wave (saw) device. The modifying and bonding steps may be performed in any order.
Rf Micro Devices, Inc.

Photoacoustic apparatus, control photoacoustic apparatus, and subject holding member for photoacoustic apparatus

A photoacoustic apparatus that reduces the possibility of unnecessary high density light entering the eyes of a subject and/or an operator when photoacoustic measurement is not performed includes a holding unit that holds a subject, a light irradiation unit that irradiates the subject with light via the holding unit, and a probe that receives an acoustic wave propagated from the subject, wherein the holding unit includes a light diffusion surface that diffuses the light and of which a degree of diffusion of the light is lowered when an acoustic matching material is applied thereto.. .
Canon Kabushiki Kaisha

Devices and methods related to radio-frequency filters on silicon-on-insulator substrate

Devices and methods related to radio-frequency (rf) filters on silicon-on-insulator (soi) substrate. In some embodiments, an rf device can include a silicon die such as an soi die including a first side and a second side.
Skyworks Solutions, Inc.

Surface acoustic wave device

A surface acoustic wave device includes a piezoelectric substrate, an idt electrode that is provided on the piezoelectric substrate and includes combtooth-shaped electrode fingers, and a wiring electrode that is connected to the idt electrode. A line width of the electrode fingers at a lower edge thereof and a line width of the electrode fingers at an upper edge thereof in a cross section of the electrode fingers that is perpendicular or substantially perpendicular to a longitudinal direction of the electrode fingers is smaller than a maximum line width of the electrode fingers..
Murata Manufacturing Co., Ltd.

Electroacoustic component and crystal cuts for electroacoustic components

An electroacoustic component is disclosed. In an embodiment, the electroacoustic component includes a piezoelectric substrate comprising a rare earth metal and calcium oxoborates (re-cob) and component structures arranged on the substrate, the component structures being suitable for converting between rf signals and acoustic waves, wherein the waves are capable of propagation in a direction x′″, and wherein the direction x′″ is determined by euler angles (λ, μ, θ), the euler angles being selected from angle ranges (20 .
Epco Ag

Wearable device capable of indicating direction and recognizing direction and control method thereof

A wearable device capable of indicating direction is provided, including a wearable module, a plurality of acoustic wave sensors, a plurality of vibrators, and a control module. The wearable module is adapted to be worn on the user's body, the acoustic wave sensors and the vibrators are disposed on the wearable module in different directions.
National Taiwan Normal University

Passive tamper-resistant seal and applications therefor

A ribbon comprises a substrate, and a plurality of seals on the substrate. Different seals detune in response to differing tensile loads.

Method and differentiating touch screen users based on touch event analysis

Some embodiments of the present invention include a method of differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact and includes detecting a touch event on a touch sensitive surface, generating a vibro-acoustic waveform signal using at least one sensor detecting such touch event, converting the waveform signal into at least a domain signal, extracting distinguishing features from said domain signal, and classifying said features to associate the features of the domain signal with a particular user.. .
Qeexo, Co.

System and providing related content at low power, and computer readable recording medium having program recorded therein

Provided is a system for providing related content comprising the steps of: sensing a sound output from a content reproducing device for reproducing content (referred to as “main content”); converting the sensed sound into digital data; extracting an acoustic wave id from the digital data; selecting related content corresponding to the acoustic wave id; and displaying the related content in an image and/or speech by a mobile receiver.. .
Soundlly Inc.

Acoustic wave filter, duplexer, and module

An acoustic wave filter includes: series resonators connected in series; and one or more parallel resonators connected in parallel, wherein at least two series resonators and a parallel resonator therebetween are divided into a first divided resonator, which includes a piezoelectric substance sandwiched between a pair of electrodes in a c-axis orientation direction, and a second divided resonator, which includes another piezoelectric substance sandwiched between another pair of electrodes so that the another pair of electrodes in the c-axis orientation direction has an electric potential opposite to that of the electrodes of the first divided resonator in the c-axis orientation direction, a first group including the first divided resonators and a second group including the second divided resonators are interconnected in parallel between two nodes, and the first divided resonators and the second divided resonators of the at least two series resonators are not electrically interconnected at the two nodes.. .
Taiyo Yuden Co., Ltd.

Acoustic window

An acoustic window for passage of desired acoustic waveforms therethrough is provided. The acoustic window includes at least a pair of structural septa.
Rohr, Inc.

Acoustic source fragmentation system for breaking ground material

A system for fragmenting material includes an energy source, an acoustic transmitter coupled to the energy source and having a unit acoustic source configured to emit an acoustic wave through a volume of ground material, a signal reflecting device, and a controller configured to engage the acoustic transmitter such that the unit acoustic source emits an acoustic locating wave toward the signal reflecting device. The controller is configured to engage the acoustic transmitter such that the unit acoustic source emits the acoustic wave toward a target location, and the acoustic wave is configured to fracture the volume of ground material at the target location..
Elwha Llc

Submersible pump monitoring

In order to address the above noted problems, embodiments of the present invention use distributed acoustic sensing to monitor the fluid level in an esp activated well so as to monitor the condition and performance of the esp. Embodiments of the invention use the esp as an acoustic source in order to monitor the annulus fluid level within the well and to monitor the frequency of the esp.
Silixa Ltd.

Methods employing phase state analysis for use in speech synthesis and recognition

A computer-implemented method for automatically analyzing, predicting, and/or modifying acoustic units of prosodic human speech utterances for use in speech synthesis or speech recognition. Possible steps include: initiating analysis of acoustic wave data representing the human speech utterances, via the phase state of the acoustic wave data; using one or more phase state defined acoustic wave metrics as common elements for analyzing, and optionally modifying, pitch, amplitude, duration, and other measurable acoustic parameters of the acoustic wave data, at predetermined time intervals; analyzing acoustic wave data representing a selected acoustic unit to determine the phase state of the acoustic unit; and analyzing the acoustic wave data representing the selected acoustic unit to determine at least one acoustic parameter of the acoustic unit with reference to the determined phase state of the selected acoustic unit.
Lessac Technologies, Inc.

Bezel-less acoustic touch apparatus

An acoustic touch apparatus is provided that includes a substrate capable of propagating surface acoustic waves, such as rayleigh-type or love-type waves. The substrate has a front surface, a back surface, and a curved connecting surface formed between the front surface and the back surface.
Elo Touch Solutions, Inc.

Acousto-electromagnetic acoustic sensing

In some embodiments, an apparatus, method, and a system may operate to include an aem sensor configured to generate an electromagnetic wave into a geologic formation. The aem sensor is further configured to receive a reflected electromagnetic wave from the formation.
Halliburton Energy Services, Inc.

Low loss acoustic wave sensors and tags and high efficiency antennas and methods for remote activation thereof

Enhanced surface acoustic wave (saw) sensors and saw sensor-tag wireless interface devices, including low loss devices, devices that enable enhanced use of time diversity for device identification, and devices suitable for use in band-limited environments (such as ism band) and for use in ultra-wideband applications are disclosed. Antennas for use with both saw sensors and/or tags, and wireless transceiver systems also are disclosed, including antennas suitable for operation in conductive media and in highly metallic environments, said antennas being used to activate and read said saw sensors and/or tags.
Sensanna Incorporated

Fuel injector

A fuel injection system for a gas turbine engine (10) comprises; a pilot fuel injector section (22, 23) and a main airblast fuel injector section (25, 26, 27, 28, 29), the main airblast fuel injector section having an aft end (29) facing a combustion chamber (30). A surface of the injection system exposed to air flow through an injection system is non-axisymmetric or non-planar in a reference circumferential plane and/or is configured to generate controlled and varying acoustic impedance at or adjacent the aft end where, in use, the air flow collides with an oncoming acoustic wave..
Rolls-royce Plc

Marking of the tool center and of the orientation of an acoustic probe in a reference frame, by ultrasound method

A process for marking the real position and real orientation of a tool in relation to the manipulator arm of a robot. The process utilizes the amplitude measurements of acoustic signals and the flight time measurement of the acoustic waves emitted by an acoustic probe of the tool and reflected by the fixed reference elements.
Airbus Group Sas

Vented acoustic enclosures and related systems

An enclosure for a speaker transducer can have a front housing member and a rear housing member. Some enclosures position the speaker transducer between the front housing member and the rear housing member, and spaced apart from the rear housing member to define a rear chamber positioned between the speaker transducer and the rear housing member.
Apple Inc.

Apparatus

Provided is an apparatus for acquiring object information, the apparatus including: first and second laser output unit outputting first and second pulsed laser; a laser controlling unit configured to control each laser output unit; a first or second detecting unit configured to detect an emission timing of laser and output a first or second detection signal; a probe configured to receive an acoustic wave from an object being irradiated with the laser; and a signal processing unit configured to acquire specific information of the object, based on the acoustic wave. The laser controlling unit controls output of at least one of the laser output units so as to decrease a time difference between subsequent first and second pulsed lasers to be output..
Canon Kabushiki Kaisha

Surface acoustic wave filter

A longitudinally coupled resonator type surface acoustic wave filter includes a high-acoustic-velocity member, a low-acoustic-velocity film provided on the high-acoustic-velocity member, a piezoelectric film provided on the low-acoustic-velocity film, a plurality of interdigital transducers provided on the piezoelectric film and along a propagation direction of a surface acoustic wave and each including a plurality of electrode fingers, and reflectors arranged such that the interdigital transducers are interposed therebetween from both sides in the propagation direction of the surface acoustic wave. An electrode finger pitch is uniform or substantially uniform in each of the interdigital transducers.
Murata Manufacturing Co., Ltd.

Multiferroic surface acoustic wave antenna

A method of fabricating a multiferroic antenna element may include providing a electroelastic substrate to transform mechanical oscillations into an acoustic wave, providing a resonator assembly on a surface of the electroelastic substrate where the resonator assembly includes a plurality of magnetoelastic resonators that transform an electromagnetic wave into mechanical oscillations corresponding to a frequency of the electromagnetic wave, and providing an interdigitated electrode assembly at a portion of the electroelastic substrate to convert the acoustic wave into an electrical signal preserving information associated with the frequency of the electromagnetic wave.. .

Acoustic wave element, duplexer and communication device

An elastic wave element has a piezoelectric substrate; an excitation electrode which is located on an upper surface of the piezoelectric substrate and generates an acoustic wave, and two reflectors which are located on the upper surface of the piezoelectric substrate and sandwich the excitation electrode in the propagation direction of the acoustic wave. The excitation electrode has a main region located between the two end parts of the propagation direction and outer regions located on two sides of the main region.
Kyocera Corporation

Separation of up-going and down-going wavefields including the direct arrival

At least some embodiments are directed to a system. The system includes a processor and a memory coupled to the processor.
Pgs Geophysical As

Thrombolysis device and operating a thrombolysis device

According to various embodiments, there is provided a thrombolysis device including a catheter configured to be inserted into a blood clot; a treatment transducer coupled to the catheter, the treatment transducer configured to transmit acoustic waves; a measurement transducer coupled to the catheter, the measurement transducer configured to transmit further acoustic waves and further configured to receive acoustic echoes, the acoustic echoes being reflections of the further acoustic waves from a boundary of the blood clot, wherein the measurement transducer is further configured to provide a measurement output; a determination circuit configured to determine at least one of a viscosity of blood in a vicinity of the measurement transducer or a volume of the blood clot, based on the measurement output; and a control circuit configured to generate control signals for controlling the treatment transducer, based on at least one from the group consisting of the viscosity of blood in the vicinity of the measurement transducer, the volume of the blood clot and a temperature measurement of the blood clot.. .
Agency For Science, Technology And Research

Object information acquiring apparatus, object information acquiring method, and storage medium

An object information acquiring apparatus is used, which includes: a conversion element receiving an acoustic wave from an object irradiated with light with a plurality of wavelengths and converts the acoustic wave into an electric signal; a memory storing a lookup table or a relational expression that represents a relation between the wavelength of light and a transformation coefficient based on an intensity of an acoustic wave from a standard sample with a known coefficient relating to light absorption and the coefficient for the standard sample; a transformation coefficient acquiring unit that acquires the transformation coefficient from the memory; and a signal processing unit acquiring specific information on the object, using an electric signal and the transformation coefficient.. .
Canon Kabushiki Kaisha

Surface acoustic wave device and filter

A surface acoustic wave device includes: comb-shaped electrodes each including electrode fingers and dummy electrode fingers; and additional films located to cover gaps between tips of the electrode fingers of one of the comb-shaped electrodes and tips of the dummy electrode fingers of the other, wherein each of the additional films overlap with at least one of the electrode fingers and the dummy electrode fingers located lateral to the corresponding gap in a first direction in which the electrode fingers extend or in a second direction intersecting with the first direction, and a distance g of the gap is 0<g≦1.0λ and a film thickness h of the additional films is 0<h/λ≦(0.146g+0.694076)×ρ2/ρ1 where λ is a wavelength of an acoustic wave, ρ1 is a density of a material of the additional films, and ρ2 is a density of aluminum oxide.. .
Taiyo Yuden Co., Ltd.

Bulk acoustic wave resonator and filter including the same

A bulk acoustic wave resonator includes a substrate, a first electrode and a second electrode disposed on the substrate, and a piezoelectric layer disposed between the first electrode and the second electrode. At least one of the first electrode and the second electrode includes an alloy of molybdenum and tantalum..
Samsung Electro-mechanics Co., Ltd.

Flow sensing device

A non-invasive, hands-free “water flow device” senses when water is and is not flowing and can give the user a visual display, of the real time water flow duration and quantity of water used by a shower (or other water dispensing device), for example. The water flow device may use an acoustic transducer (e.g., a microphone) to sense the acoustic waves generated by the flow of water during a shower.
Watertally, Inc.

Optical coherence photoacoustic microscopy

A system and method for providing an optical coherence photoacoustic (oc-pam) microscopy. An oc-pam microscope includes a light source that outputs light, a scanner, a detector, a transducer, and an image processing module.
Northwestern University

Apparatus and methods for treating root canals of teeth

Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid.
Sonendo, Inc.

Acoustic wave processing apparatus, signal processing method, and program for acoustic wave processing apparatus

There are included a data processing step of selecting two or more pieces of data from among a plurality of pieces of first element data or a plurality of pieces of first reception data generated by subjecting the pieces of first element data to phasing addition processing, and performing superimposition processing on the two or more pieces of data, a region-of-interest setting step of setting a region of interest in an imaging area, and a processing condition changing step of changing a processing condition in the data processing step, in a case where the region of interest is set in the region-of-interest setting step, on the basis of information on the set region of interest.. .
Fujifilm Corporation

Acoustic wave processing apparatus, signal processing method, and program for acoustic wave processing apparatus

There are included a data-processing-unit that selects two or more pieces of data from among a plurality of pieces of first element data or from among a plurality of pieces of first reception data generated by subjecting the pieces of first element data to phasing addition processing and that performs superimposition processing on the two or more pieces of data to generate processed data, an image-generation-unit that generates an acoustic wave image on the basis of the processed data, a setting-information-holding-unit that holds setting information on at least one of a transmitting-unit, a receiving-unit, the data-processing-unit, the-image-generation-unit, and a display-control-unit, and a setting-changing-unit that, in a case where a measurement condition is changed, changes setting of at least one of the transmitting-unit, the receiving-unit, the data-processing-unit, the image-generation-unit, and the display-control-unit on the basis of the held setting information, the setting being related to the acoustic wave image generated on the basis of the processed data.. .
Fujifilm Corporation

Sound generator

An sound generator is disclosed. The sound generator, includes: a housing having a sound opening for radiating acoustic waves; at least one brace spanning across the sound opening, the brace having two ends both fixed on the housing around the sound opening; and a dust screen completely covering the sound opening, the dust screen including a first part located outside the sound opening and a second part covering the sound opening.
Aac Technologies Pte. Ltd.

Encapsulated bulk acoustic wave (baw) resonator device

An electronic package includes a die mounted on a first substrate; a second substrate disposed over the first substrate; a pillar wall extending between a surface of the die and an opposing surface of the second substrate to provide separation between the die and the second substrate, the pillar wall extending about a perimeter bounding the die and enclosing a cavity between the first and second substrates; and an encapsulating layer disposed over the first and second substrates and around the pillar wall. Substantially none of the encapsulating layer ingresses into the cavity..
Avago Technologies General Ip (singapore) Pte. Ltd.

Systems and methods for ultrasonically induced tactile stimuli in an entertainment system

The present disclosure provides systems and methods for generating a haptic sensation, such as a tactile stimuli, using parametric ultrasound on a site of an object. An entertainment device may be associated with a parametric ultrasonic transmitters subsystem configured to transmit first and second ultrasonic pulses that intersect proximate a site of a user and generate an acoustic wave at a beat frequency of the first and second ultrasonic pulses.
Elwha Llc

Photoacoustic microscope apparatus

A photoacoustic microscope apparatus includes a light source that emits excitation light which generates photoacoustic waves, an objective lens which focuses the excitation light on a specimen, a scanning unit which moves a focused position of the excitation light on the specimen, a photoacoustic-wave detecting unit which has a sensor unit that detects a photoacoustic wave generated, and an image constructing unit which constructs an image based on data from the photoacoustic-wave detecting unit. For the sensor unit, an angle of a range which is capable of receiving the photoacoustic wave incident on the sensor unit is larger than an angle corresponding to a numerical aperture on a side illuminated of the objective lens..
Olympus Corporation



Acoustic Wave topics:
  • Acoustic Wave
  • Piezoelectric
  • Transducer
  • Wave Device
  • Electrical Signal
  • Extensional
  • Magnetic Field
  • Extensions


  • Follow us on Twitter
    twitter icon@FreshPatents

    ###

    This listing is a sample listing of patent applications related to Acoustic Wave for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Acoustic Wave with additional patents listed. Browse our RSS directory or Search for other possible listings.


    1.482

    file did exist - 2496

    1 - 1 - 51