Class / Patent application number | Description | Number of patent applications / Date published |
073643000 | Nonvibrating transducer | 55 |
20080276711 | Device for Testing Material and Measuring Thickness on a Test Object Having at Least Electrically Conducting and Ferromagnetic Material Parts - A device is disclosed for material testing on a test object having at least electrically conducting and ferromagnetic material parts, the test object being provided with at least one technical surface, with at least one electromagnetic ultrasonic transducer array (EMUS) which is provided with a permanent magnet array or an electromagnet array and at least one eddy current coil arrangement. The at least one eddy current coil arrangement has at least one electrical strip conductor arrangement which is disposed at or parallel to a surface area of a rolling member which can be rolled on the technical surface of the test object, with the surface area rolling along with the rolling member during rolling. | 11-13-2008 |
20080289427 | Method and Apparatus of Detecting an Object - A system for stand-off, continuous, real-time, non-invasive, non-radiological, eye-safe, non-consumable characterization of an object is disclosed that comprises in combination a pulsed laser emitter for directing energy at the surface of an object, wherein the ultrasonic wave is generated within the object to be characterized, and a remote means of measuring the vibrational excitation in the object, whereby the object is remotely characterized. | 11-27-2008 |
20080302188 | Ultrasonic Testing Method and Ultrasonic Testing Device Using This - A ultrasonic testing method capable of carrying out a test of high degree of freedom where a degree of freedom of arranging a transmission element and a reception element is high and the scope of an object of testing is not likely to be limited, and a ultrasonic testing device using this. An ultrasonic wave is sent from a transmission element ( | 12-11-2008 |
20090044627 | CAPACITIVE ELECTROMAGNETIC ACOUSTIC INSPECTION APPARATUS - A method and apparatus for non-destructive testing. An embodiment of the present disclosure provides a non-destructive inspection system comprising a capacitive electromagnetic acoustic transducer and a control unit connected to the capacitive electromagnetic transducer. | 02-19-2009 |
20090056455 | INSPECTION APPARATUS AND INSPECTION METHOD USING ELECTROMAGNETIC WAVE - The present invention is to provide inspection apparatus and method of being able to acquire electromagnetic wave response information of an inspection object at high speed as average information using an electromagnetic wave. An inspection apparatus using an electromagnetic wave | 03-05-2009 |
20090084185 | ELECTROMAGNETIC ACOUSTIC TRANSDUCER WITH CROSS-TALK ELIMINATION - The electromagnetic acoustic transducer (EMAT) transducer disclosed herein is useful for the non-destructive analysis of objects. The transducer comprises a core having a winding and a coil disposed between the core and the object to be analyzed. One transducer can be used as a transmitter and another transducer as a receiver. Then selectively switching static magnetic field in either transmitter or receiver and processing data with and without static magnetic field allows for eliminating artifacts due to parasitic coupling between the transmitter/receiver pair. The switching of the static magnetic field can be implemented either by using electromagnet or a pair of permanent magnets where magnetization of one permanent magnet is reversed to provide cancellation of the static magnetic field. | 04-02-2009 |
20090293622 | Device and Method for Nondestructive Testing of Pipelines - A device for nondestructive testing of pipelines is designed to move along a pipeline and has at least one measuring unit for acquiring measured data of the pipeline, wherein the device is self-propelled and has at least one functional unit rotatable about a central axis of the device for acquiring measured data and/or for driving the device. In a corresponding method for nondestructive testing of pipelines, the device is moved along the pipeline by a functional unit having drive elements and moving helically along a surface of the pipeline to be covered. The functional unit acquires measured data and the drive elements are forced by a magnetic field generated by the functional unit against the surface of the pipeline. | 12-03-2009 |
20090301206 | Method and System for Non-destructively Testing a Metallic Workpiece - The invention relates to a method for nondestructive testing of a metallic workpiece ( | 12-10-2009 |
20100005891 | MICROWAVE DEVICE FOR CONTROLLING MATERIAL - The invention relates to a device for controlling a material, said device comprising at least means for transmitting an electromagnetic signal at a carrier frequency Fp to illuminate the material and means for receiving the electromagnetic signal, characterized in that said device further comprises first means for modulating the electromagnetic signal at a frequency Fm1, said modulation means being arranged, on the signal path, between the transmission means and the material in order to spatially sample the emitted electromagnetic signal; second means for modulating the electromagnetic signal at a frequency Fm2, said modulation means being arranged, on the signal path, between the material and the electromagnetic signal reception means in order to spatially sample the electromagnetic signal passed through the material. | 01-14-2010 |
20100018315 | Electromagnetic Ultrasonic Transducer and Array Thereof - An electromagnetic ultrasonic transducer and an array thereof are provided. This electromagnetic ultrasonic transducer includes a support, an elastic board disposed on the support, a magnetizer on the elastic board, and a magnet field generator for vibrating the magnetizer, wherein, the thickness of the magnetizer is of the order of microns. The thickness of the elastic board is also of the order of microns. This electromagnetic ultrasonic transducer is able to produce acoustic waves of high frequency, which are useful for ultrasonic therapy. | 01-28-2010 |
20100154549 | LASER ULTRASONIC DEVICE - A laser ultrasonic device is disclosed. The laser ultrasonic device comprises an ultrasonic generation system capable of generating ultrasonic waves on a surface of a sample, said system comprising a first collection of optical fiber output ends arranged in a first pattern. | 06-24-2010 |
20110167914 | INTEGRATED MULTI-SENSOR NON-DESTRUCTIVE TESTING - Methods and apparatus for acquiring and processing data from a plurality of different sensor types for non-destructive testing of metallic structures. An electromagnetic acoustic transducer (EMAT) signal, an eddy current (EC) signal, a magnetic flux leakage (MFL) signal, and a deflection signal are acquired from each of a plurality of localized regions of a metallic structure, and are processed to characterize one or more features of the metallic structure based on at least two of the EMAT, EC, MFL, and deflection signals acquired from a common localized region in which at least a portion of the feature is located. An integrated multi-sensor device for non-destructive may be used to provide the EC, EMAT, MFL, and deflection signals for each of the plurality of localized regions of the metallic structure. Such integrated multi-sensor devices may be configured to provide an in-line inspection tool, such as an intelligent pig that is used to inspect the integrity of pipelines. | 07-14-2011 |
20110179875 | METHOD FOR EVALUATING RECEIVED SIGNALS ACQUIRED DURING A NON-DESTRUCTIVE ULTRASONIC WAVE TEST, AND DEVICE FOR NON-DESTRUCTIVE ULTRASONIC WAVE TESTING OF A TEST BODY - A method and device are disclosed for evaluating received signals acquired during non-destructive ultrasonic testing of a test body, wherein ultrasound waves are generated inside the test body with an electromagnetic ultrasonic transducer acting as an ultrasound transmitter and ultrasound waves which propagate within the test body are converted into received signals with an electromagnetic ultrasonic transducer acting as an ultrasound receiver. The received signals are evaluated for the purpose of examining the test body. | 07-28-2011 |
20110247419 | TIME REVERSAL ACOUSTIC NONCONTACT SOURCE - The present invention provides a flexible noncontact source of wave energy through the use of time reversal. In the preferred embodiment a differential laser vibrometer is employed to measure the vibration of a sample surface. Thus, the time reversal noncontact source can be configured to provide an out of plane vibration source or an in plane vibration source, or any combination of the two. | 10-13-2011 |
20110259108 | ELECTROMAGNETIC-ACOUSTIC TRANSDUCER AND ULTRASONIC TEST SYSTEM HAVING THE SAME - An electromagnetic-acoustic transducer for ultrasonic testing of test objects which are composed substantially of an electrically conductive material includes a magnet system that produces a magnetic field intended to penetrate into the test object, and an inductive coil arrangement that produces an electromagnetic alternating field superimposed on this magnetic field in the test object, and that detects electromagnetic alternating fields emitted from the test object, wherein magnet system is arranged in a magnetization unit, the coil arrangement is arranged in a probe unit separate from the magnetization unit, the probe unit is mounted such that it can move relative to the magnetization unit in the area of the magnetic field. | 10-27-2011 |
20120103097 | Flexible EMAT Arrays for Monitoring Corrosion and Defect Propagation in Metal Components and Structures - The invention pertains to the design, arrangement and fabrication of arrays of electromagnetic acoustic transducers (EMATs) for detection and monitoring of defects in metal components while they are being used in service. Emphasis is placed on printed circuit sensor coil designs that are attached to and covered with thin, flexible and insulating substrates. This laminated construction with additional means for electrical and thermal insulation, radiation heat shielding and simple cooling provides for consistent and reliable EMAT performance in monitoring components at elevated temperatures. The arrays include circular spiral coils, elongated spiral (racetrack) coils and rectangular spiral coils. Also described are arrays of dual-rectangular (butterfly) coils, meander coils and trapezoidal coils. Various assembly designs for the attachment of bias magnets are described. | 05-03-2012 |
20120204649 | OPTICAL MICROPHONE - There is provided an optical microphone for detecting an acoustic wave propagating in an ambient fluid, the optical microphone including: a propagation medium section; a light source for emitting a light wave to be transmitted through a diffraction region in the propagation medium section; and a photoelectric conversion section for detecting the light wave having been transmitted through the propagation medium section. A first acoustic wave which is a portion of the acoustic wave and a second acoustic wave which is another portion thereof are allowed to propagate in the propagation medium section so as to simultaneously arrive at the diffraction region, and an interference component between a +1 | 08-16-2012 |
20120240681 | ELECTROMAGNETIC ACOUSTIC TRANSDUCER (EMAT) COMBINED WITH PIEZOELECTRIC TRANSDUCER (PZT) FOR DUAL MODE ULTRASONIC INSPECTION - An EMAT that generates horizontally polarized shear ultrasonic waves is combined with a PZT that generates longitudinal ultrasonic waves to provide simultaneous or sequential inspection of a test component material for improved accuracy in estimating properties of the material or detecting and estimating the dimensions of defects in the material. The transducer combination is constructed so that the EMAT and PZT elements are concentric and therefore interrogate approximately the same volume of the test component material. Nonferromagnetic insulators, such as elastomers, are installed on the bottom surface of PZT component to increase the transmission and reception the ultrasonic waves into the test component. Ferromagnetic, acoustic-absorbing materials are installed on the top surface of the EMAT coil component to minimize generation of ultrasonic waves in the bias magnet. | 09-27-2012 |
20120304774 | LASER ULTRASONIC FLAW DETECTION APPARATUS - A laser beam having a single wavelength emitted from a laser light source is converted at a wavelength shifter into a laser beam having at least two wavelengths, which is further demultiplexed at a beam splitter into a laser beam having a first wavelength and a laser beam having a second wavelength. The output power and pulse width of the laser beam having the first wavelength are adjusted by a first controller so as to reach levels appropriate for generating ultrasonic vibrations without causing damage to an inspection object. The output power and pulse width of the laser beam having the second wavelength are adjusted by a second controller so as to reach appropriate levels for detecting the above-described ultrasonic vibrations. These laser beams are multiplexed by a multiplexer into a single laser beam to be focused onto a surface of the inspection object. | 12-06-2012 |
20130047731 | LASER GENERATION OF NARROWBAND LAMB WAVES - A system and method for providing laser generated ultrasound technique utilizing superimposed line sources is presented. The system and method can generate narrowband Lamb waves with a dominant wavelength by superimposing signals of line sources at the pitch corresponding to the desired wavelength. The superposition can be performed in software after data are collected to permit flexibility in the wavelength selected. Selecting the dominant wavelength in signals can reduce signal complexity and the speeds and frequencies of wave modes with the selected wavelength can be determined through dispersion curves. One or more additional techniques including, but not limited to, two-dimensional Fourier transforms and wavelet analysis can be used to further reduce the complexity of the signals. The system and method can be used, for example, for defect detection in thin plates. | 02-28-2013 |
20130068028 | PSEUDORANDOM BINARY SEQUENCE APPARATUS AND METHOD FOR IN-LINE INSPECTION TOOL - An in-line inspection tool is disclosed for inspecting the wall of a pipeline while traveling therethrough. The in-line inspection tool may include a transmitter, a signal generator, one or more receivers, and a decoder. The signal generator may generate a pseudorandom signal, generate an inspection signal, and drive the transmitter with a convolution of the pseudorandom signal and the inspection signal. The transmitter may transmit the convoluted signal to the wall of the pipeline. One or more receivers may receive from the wall of the pipeline a received signal comprising at least one of the convoluted signal and a reflection of the convoluted signal. The decoder may identify the inspection signal within the received signal by cross correlating the received signal and the pseudorandom signal. | 03-21-2013 |
20130098158 | Ultrasonic Non-Destructive Testing - An apparatus and method for ultrasonic non-destructive testing provides an elongate strip of ultrasound transmissive material coupled at a proximal end to an object under test. The elongate strip has a transverse cross-section with a width and thickness giving an aspect ratio greater than unity and matched to the ultrasonic transducer such that excitation induces a substantially non-dispersive ultrasonic signal to propagate along the elongate strip to the proximal end and to enter the object under test. These non-dispersive pulses are particularly suited for time-of-flight measurements, thickness measurements, crack measurements and the like. The elongate strip helps to separate the transducer from a potentially hostile environment associated with the object under test. The elongate strip also has a large area of contact with the object under test allowing efficient transmission of energy into the object under test. | 04-25-2013 |
20130111998 | Electromagnetic Acoustic Transducer System - A method and apparatus for an electromagnetic acoustic transducer. An apparatus comprises a conductive material and a current inducer. The conductive material is configured to generate a magnetic field, wherein the magnetic field has magnetic flux lines that are substantially fixed and the conductive material has a temperature that is equal to or less than a critical temperature at which the conductive material has substantially zero electrical resistance. The current inducer is configured to cause an electric current to flow in a test object that interacts with the magnetic field, wherein the electric current has a frequency that generates an acoustic wave in the test object. | 05-09-2013 |
20130111999 | METHOD AND DEVICE FOR NON-DESTRUCTIVE MATERIAL TESTING BY MEANS OF ULTRASOUND - A method is described for non-destructive material testing on a workpiece comprising an electrically conductive material using EMUS transducers, each of which has a magnet unit for locally introducing a magnetic field into the workpiece, and also has a radio frequency (RF) coil arrangement, which interacts with the magnetic field. The invention is distinguished in that at least two transcuers are spaced apart along a surface of the workpiece. At least a first EMUS transducer generates and also measures ultrasound waves within the workpiece and the second EMUS transducer functions as a reception transducer for at least detecting ultrasound waves. | 05-09-2013 |
20130145851 | MAGNETOSTRICTIVE PHASED ARRAY TRANSDUCER FOR TRANSDUCING SHEAR HORIZONTAL BULKWAVES - A magnetostrictive phased array transducer for transducing shear horizontal bulkwaves including a plurality of magnetostrictive members each having a bottom surface of a plate-shaped structure made of a ferromagnetic material, which is mounted to be adhered closely to the surface of a mounting place; an insulator disposed on a side surface of each magnetostrictive member; a meander coil having a plurality of coil lines extended in the direction parallel with the bottom surface on each insulator, wherein adjacent coil lines are connected so that current flows in the opposite directions to each other, thereby generating a dynamic magnetic field with respect to each magnetostrictive member; and a magnet mounted to generate a static magnetic field perpendicular to the dynamic magnetic field. When the current is supplied to the meander coil, a plurality of magnetostrictive members generate a plurality of shear horizontal bulkwaves while being deformed by the magnetostriction effect. | 06-13-2013 |
20130333475 | DEVICE AND METHOD FOR PICKLING AND SIMULTANEOUSLY CHECKING A PART BY ACOUSTIC MEANS - A device for implementing a method for pickling/stripping and for simultaneously non-destructively checking a part ( | 12-19-2013 |
20140033822 | ULTRASONIC TRANSDUCER, AND ULTRASONIC WAVE GENERATING APPARATUS AND ULTRASONIC SYSTEM INCLUDING THE SAME - An ultrasonic transducer, and an ultrasonic wave generating apparatus and an ultrasonic system including the same. The ultrasonic transducer includes a light-absorbing layer configured to absorb light incident on the light-absorbing layer and to generate heat based on the absorbed light; and a thermoelastic layer which is disposed on the light-absorbing layer and which is configured to thermally expand based on the heat to generate ultrasonic waves. | 02-06-2014 |
20140047923 | Wear-Tolerant Electromagnetic Acoustic Transducer for use with Electromagnetic Acoustic Resonance Inspection Techniques - Systems, methods, and devices for an Electromagnetic Acoustic Transducer (EMAT) comprising: a ceramic wear surface disposed about a first aperture of an EMAT tip portion, a transducing coil means disposed within a volume of the EMAT tip portion; where at least one magnet and an insulative surface may be interposed between the ceramic wear surface and the insulative structure. Optionally, a signal transmitting means may be configured to conduct a signal from the transmitting coil means via a second aperture of the tip. | 02-20-2014 |
20140116146 | System and Method for Testing a Composite Structure Using a Laser Ultrasound Testing System - A method and apparatus for testing a composite structure. A pulsed laser beam having a number of properties is generated. Each of the number of properties is within a selected range. The pulsed laser beam generated by the generation laser system is directed towards a composite structure comprised of a number of composite materials. A number of ultrasonic waves are formed in the composite structure when the pulsed laser beam contacts the composite structure without causing any undesired inconsistencies in the composite structure outside of selected tolerances. | 05-01-2014 |
20140290370 | Sensors Using Optical RF Oscillators - An optical microresonator based RF oscillator sensor for measuring mass, temperature, and particle/molecule concentration. An optical energy source is coupled to the optical microresonator to generate optical power oscillations at Rf frequencies. A stable or reference RF oscillation frequency is established which allows for measuring oscillation frequency variations induced by the interaction of the substance with the optical microresonator. | 10-02-2014 |
20140360272 | CAPACITIVE TRANSDUCER DRIVE DEVICE AND OBJECT INFORMATION ACQUIRING DEVICE - Provided is a capacitive transducer drive device capable of adjusting a potential difference applied between electrodes of a cell with a simple configuration. A capacitive transducer to be driven by the drive device includes a cell including: a first electrode included in a vibrating membrane; and a second electrode formed to oppose the first electrode through intermediation of a gap. One of the first electrode and the second electrode of the cell is electrically connected to a first DC voltage applying unit, and the other of the first electrode and the second electrode of the cell is electrically connected to a second DC voltage applying unit. A voltage to be applied by the second DC voltage applying unit is set to be lower than a voltage to be applied by the first DC voltage applying unit. The voltage to be applied by the second DC voltage applying unit is variable. | 12-11-2014 |
20140360273 | METHODS, SYSTEMS AND APPARATUS OF AN ALL-OPTICS ULTRASOUND SENSOR - Certain examples provide a transparent ultrasonic transducer including a transparent substrate and a transparent optical resonator positioned on the transparent substrate. The transparent optical resonator is to facilitate excitation of a biological sample and to receive acoustic emission from the biological sample triggered by the excitation, for example. | 12-11-2014 |
20140366634 | PIPE DAMAGE DETECTION APPARATUS AND METHOD - A pipe damage detection apparatus and method are disclosed. The pipe damage detection apparatus includes an ultrasonic supply unit configured to supply an ultrasonic signal to a pipe; an ultrasonic reception unit configured to receive the ultrasonic signal of the pipe; and an analysis unit configured to analyze the ultrasonic signal received by the ultrasonic reception unit, and determine whether the pipe is damaged. The pipe damage detection apparatus and method can detect whether a pipe that is difficult for an inspector to access because it is coated with an insulating material or buried in the ground is damaged. | 12-18-2014 |
20150090037 | OBJECT INFORMATION ACQUIRING APPARATUS - An object information acquiring apparatus is used, including: an optical transmission system for transmitting light from a light source; a photoacoustic probe including an irradiating end for irradiating an object with light and a receiver for receiving acoustic waves generated from the object that has been irradiated with light; a processor for acquiring information on the object based on the acoustic waves; a light quantity meter for measuring the quantity of light emitted from the irradiating end; a memory for storing a measurement value; and a presentation unit. The processor compares the measurement value with a reference value of light quantity or a history of measurement value stored in the memory, and provides a result regarding whether or not the measurement value is within a reference range to the presentation unit. | 04-02-2015 |
20150101411 | SYSTEMS AND METHODS FOR COMPONENT SEPARATION IN MEDICAL IMAGING - A system is provided for component separation. In an embodiment, a light source or other source of electromagnetic energy delivers energy to a volume of tissue. A transducer array or other sensor receives a resulting acoustic signal, and a processing subsystem processes the acoustic signal to separate a direct acoustic return component from a secondary acoustic return component of the acoustic signal. An output and/or storage device presents and/or stores information about the direct acoustic return component, the secondary acoustic return component, or both. Other embodiments include a coded probe, a probe having an isolator that produces a wavefront, a sensor for measuring intensity of an acoustic wave produced by absorbed photons, and a system that receives acoustic signals from surface targets to determine an optical parameter of the volume. | 04-16-2015 |
20150122032 | PHOTOACOUSTIC APPARATUS AND METHOD OF OPERATING THE SAME - Provided are a photoacoustic apparatus and method of operating the same. The photoacoustic apparatus includes: a laser module that generates laser light and transmits a laser state signal indicating a state of a laser module; a probe including an optical output unit for irradiating laser light generated by the laser module onto an object and a scanner for detecting a photoacoustic signal that is generated from the object; a scanner controller for controlling a position of the scanner; a sequence controller for controlling acquisition of the photoacoustic signal based on the laser state signal; a signal receiver that is controlled by the sequence controller to acquire the photoacoustic signal; and a photoacoustic image generator for generating a photoacoustic image based on the photoacoustic signal. The laser state signal includes a lasing ready state signal and a laser exposure state signal. | 05-07-2015 |
20150122033 | OPTICAL FIBER FOR GENERATING BESSEL BEAM AND OPTICAL IMAGING DEVICE USING SAME - An optical fiber for generating a Bessel beam and an optical imaging device using the same are disclosed. The optical fiber for generating a Bessel beam includes a single mode optical fiber (SMF) unit, a multi-mode optical fiber unit, and a lens unit. The SMF unit includes a core and a cladding surrounding the core. The multi-mode optical fiber unit comes in contact with a first end of the SMF unit. The lens unit comes in contact with one end of the multi-mode optical fiber unit that faces the first end of the SMF unit. | 05-07-2015 |
20150135839 | PHOTOACOUSTIC PROBE MODULE AND PHOTOACOUSTIC IMAGING APPARATUS HAVING THE SAME - A photoacoustic probe module includes an optical system configured to guide a laser beam generated by a laser source such that the laser beam arrives at an object at a target incidence angle and penetrates the object to a target internal depth, and a photoacoustic probe configured to receive acoustic waves emitted from the target depth by the laser beam. | 05-21-2015 |
20150143911 | PHYSICAL/CHEMICAL SENSOR AND METHOD FOR MEASURING SPECIFIC SUBSTANCE - [Problems to be solved] | 05-28-2015 |
20150293017 | PHOTOTHERMAL RESONANCE - The present invention relates to a method for detecting photo-thermal absorbance of a material utilising a mechanically temperature sensitive resonator ( | 10-15-2015 |
20150316510 | PHOTOACOUSTIC MICROSCOPE - A photoacoustic microscope includes an objective lens that irradiates a specimen with excitation light, a light scanning unit that deflects the excitation light to scan the specimen, an acoustic lens that converts a wavefront of a photoacoustic wave generated by the specimen due to irradiation with the excitation light, a photoacoustic wave detection unit that detects the photoacoustic wave from the acoustic lens, a drive unit that displaces at least one of the acoustic lens and the photoacoustic wave detection unit, and a control unit that controls the drive unit, in synchronization with scanning of the excitation light by the light scanning unit, so that the photoacoustic wave is incident on the photoacoustic wave detection unit perpendicularly. | 11-05-2015 |
20150323505 | APPARATUS AND METHOD FOR MEASURING NONLINEAR PARAMETERS - The present invention relates to a technology for measuring a nonlinear parameter of an object to be measured, and more particularly, to an apparatus and method for measuring a nonlinear parameter of an object to be measured. | 11-12-2015 |
20150325971 | PHOTOACOUSTIC MEASUREMENT DEVICE AND LASER LIGHT SOURCE - A flash lamp | 11-12-2015 |
20150330951 | LASER TWEEZER SYSTEM FOR MEASURING ACOUSTIC VIBRATIONS OF NANOPARTICLES - Optically trapped specimens (typically nanoparticles having diameters between 1 and 50 nm) are excited with an optical beam so as to induce vibrations in the specimens. A trapping optical beam and the excitation optical beam can produce vibrations based on a difference frequency based on the trapping optical beam and the excitation optical beam. Scattered optical radiation as a function of modulation frequency can be recorded and used to identify or characterize the specimen. | 11-19-2015 |
20150372618 | ELECTROMECHANICAL TRANSDUCER DEVICE AND ANALYTE INFORMATION ACQUIRING APPARATUS - To suggest an electromechanical transducer device with a high S/N ratio, an electromechanical transducer device includes a first substrate; electromechanical transducer elements two-dimensionally arrayed on a front surface of the first substrate and configured to provide conversion between acoustic waves and electric signals; an electric wiring substrate that is a second substrate electrically connected with a back surface of the first substrate; a first acoustic matching layer provided between the first substrate and the second substrate; an acoustic attenuating member arranged on a back surface of the second substrate; and a second acoustic matching layer provided between the second substrate and the acoustic attenuating member. | 12-24-2015 |
20160003779 | OMNI-DIRECTIONAL SHEAR-HORIZONTAL WAVE ELECTROMAGNETIC ACOUSTIC TRANSDUCER - A transducer is provided. The transducer includes: a permanent magnet unit formed in a form of a circular ring having upper and lower surfaces each having a predetermined diametrical direction width while having a circular through-portion in a central portion of the permanent magnet unit, the permanent magnet unit generating a vertical magnetic flux due to opposite magnetic poles that are formed in the upper and lower surfaces; and a coil wound in a diametrical direction across an area between an inner surface formed by the circular through-portion of the permanent magnet and an outer surface formed by an outer circumference of the permanent magnet and also wound in a circumferential direction of the permanent magnet, wherein the coil comprises a conductive material so that a current is applied to the coil, and when an alternating current is applied to the coil, a direction of the alternating current flowing along the coil and a direction of a magnetic field passing through the coil are orthogonal to each other. | 01-07-2016 |
20160003781 | OBJECT INFORMATION ACQUIRING APPARATUS AND LASER APPARATUS - There is used an object information acquiring apparatus including a laser resonator configured to include two reflection bodies and a Q switch provided between the two reflection bodies and determining a Q value based on a voltage to be applied, an excitation section configured to optically excite a laser medium, a detector configured to detect light output from one of the reflection bodies, a controller configured to control the laser resonator and determine a value of the voltage based on a detection result of the detector and applies the voltage to the Q switch, a receiver configured to receive an acoustic wave propagating from an object based on irradiation of the object with laser light output from one of the reflection bodies, and an acquisition section configured to acquire information on the object based on a reception result of the receiver. | 01-07-2016 |
20160041129 | ULTRASONIC PROBE - An ultrasonic probe includes: a housing having an opening provided at a first end portion of the housing; a transducer provided in a position corresponding to the opening and configured to generate ultrasonic waves; a heat spreader provided underneath the transducer; and a printed circuit board (PCB) disposed between the transducer and the heat spreader, wherein the heat spreader includes: a body portion configured to absorb heat from the transducer; and a coupling portion that is formed at a side portion of the body portion and coupled to the housing. | 02-11-2016 |
20160047781 | III-V NITRIDE RESONATE STRUCTURE BASED PHOTOACOUSTIC SENSOR - A microcantilever based photoacoustic sensor is generally provided. In one embodiment, the microcantilever includes: a substrate; a GaN layer on the substrate, wherein the GaN layer defines a cantilever extending beyond an edge of the substrate, with a base area of the cantilever defined by the area spanning the edge of the substrate; a HFET deflection transducer positioned on the cantilever; a pair of electrical contacts, each electrically connected to the HFET deflection transducer; and a microfluidic channel in fluid communication with an analyte reservoir, wherein the analyte reservoir is positioned at the base of the cantilever. A sensing system is also generally provided. | 02-18-2016 |
20160123798 | Improvements in Fibre Optic Distributed Sensing - This application describes method and apparatus for fibre optic distributed acoustic sensing (DAS) that allow for quantitative estimation of relatively large and continuous stimuli acting on the sensing fibre. An optical fibre ( | 05-05-2016 |
20160146662 | Systems and Methods for Spread Spectrum Distributed Acoustic Sensor Monitoring - A method and device for monitoring oil field operations with a fiber optic distributed acoustic sensor (DAS) that uses a continuous wave laser light source and modulates the continuous wave output of the laser light source with pseudo-random binary sequence codes. | 05-26-2016 |
20160178583 | SENSOR DEVICE AND METHOD FOR DETECTING THERMOACOUSTIC RESPONSES OF A MEDIUM | 06-23-2016 |
20160178680 | SENSOR DEVICE AND METHOD FOR THERMOACOUSTIC MEASUREMENT OF ELECTROMAGNETIC FIELDS | 06-23-2016 |
20160187299 | METHOD FOR CREATING DEVICE - A method for creating an electronic device including a semiconductor substrate, an element unit, a through wiring line, and a wiring portion includes forming interstitial via holes in a first surface of the substrate, forming a first insulating film on the inner walls of the via holes, forming openings that reach the first insulating film on the bottoms of the via holes from a second surface of the substrate, forming a second insulating film on the bottoms of the openings, forming a through wiring line in the via holes, forming an element unit that electrically connects the through wiring line, reducing the thickness of the substrate from the second surface so that the second surface becomes flush with the second insulating film on the bottoms of the openings, and forming a wiring portion, on the second insulating film, that electrically connects to the through wiring line. | 06-30-2016 |
20180024046 | PHOTOACOUSTIC SENSOR SYSTEM AND METHODOLOGY FOR DETECTING TARGET MOLECULES | 01-25-2018 |