Class / Patent application number | Description | Number of patent applications / Date published |
310335000 | With lens or reflector | 28 |
20080211352 | Acoustic mirror for a bulk acoustic wave structure - According to one embodiment of the invention, an acoustic mirror structure situated in a bulk acoustic wave structure includes a number of alternating low acoustic impedance and high acoustic impedance layers situated on a substrate. Each high acoustic impedance layer includes a first mole percent of a primary metal and a second mole percent of a secondary metal, where the first mole percent of the primary metal is greater than the second mole percent of the secondary metal, and where the secondary metal causes each high acoustic impedance layer to have increased resistivity. According to this exemplary embodiment, the second mole percent of the secondary metal can cause only a minimal decrease in density of each high acoustic impedance layer. The increased resistivity of each high acoustic impedance layer can cause a reduction in electrical loss in the bulk acoustic wave structure. | 09-04-2008 |
20090026888 | Actuating an optical fiber with a piezoelectric actuator and detecting voltages generated by the piezoelectric actuator - A method of one aspect may include actuating a cantilevered optical fiber by mechanically deforming a piezoelectric actuator. An electrical signal generated as a result of mechanical deformation of the piezoelectric actuator may also be detected. | 01-29-2009 |
20090033177 | THIN FILM PIEZOELECTRIC RESONATOR AND METHOD OF MANUFACTURING THE SAME - A thin film piezoelectric resonator includes a substrate having a cavity; a first electrode extending over the cavity; a piezoelectric film placed on the first electrode; and a second electrode placed on the piezoelectric film, the second electrode having a periphery partially overlapping on the cavity and tapered to have an inner angle of 30 degrees or smaller defined by a part of the periphery thereof and a bottom thereof. | 02-05-2009 |
20090096327 | METHOD AND APPARATUS FOR REDUCING SIZE OF ULTRASOUND TRANSDUCER CABLE - Ultrasound transducer comprises an array of elements forming rows and columns and wires within a transducer cable configured to connect at least a portion of the elements to an ultrasound system. The array comprises a central row and at least first and second outer rows positioned along opposite sides of the central row. First set of lines electrically connects elements within a first portion of the central row to one of the wires. First portion comprises less than a total number of elements within the central row. Second set of lines electrically connects at least a portion of the elements within first and second outer rows that are in the same column and electrically connects elements within a second portion of the central row to elements that are in the same column. Each line within the second set of lines is connected to one of the wires. | 04-16-2009 |
20090243436 | SILICONE RUBBER COMPOSITIONS COMPRISING BISMUTH OXIDE AND ARTICLES MADE THEREFROM - The present invention provides novel filled silicone compositions comprising a nano-particulate metal oxide filler selected from nano-particulate monoclinic alpha-phase bismuth oxide, nano-particulate erbium oxide, and mixtures thereof. The new composite compositions exhibit a combination of outstanding performance characteristics in both the cured and uncured states. Thus, the uncured formulations are typically free flowing liquids which are self-leveling, which de-gas readily under vacuum, are readily colorable through the addition of pigments, and which cure at temperatures of about 60° C. The cured compositions possess outstanding acoustic characteristics which make them ideally suited for use in applications such as acoustic lenses for medical imaging and therapy. For example, the acoustic impedance of compositions provided by the present invention is closely matched to the acoustic impedance of human tissue. This may result in an enhancement of ultrasound transmission efficiency between the lens of an ultrasound probe comprising such a composition and the patient. | 10-01-2009 |
20100026141 | INTRACAVITY ULTRASONIC PROBE - An intracavity ultrasonic probe which prevents or reduces degradation or failures with time due to use of an intermediate balloon made of rubber. The intracavity ultrasonic probe includes: a piezoelectric vibrator having a piezoelectric material, and a first electrode layer and a second electrode layer formed on a first surface and a second surface of the piezoelectric material, respectively; at least one acoustic matching layer provided above the second electrode layer; an acoustic lens disposed above the at least one acoustic matching layer so as to cover the at least one acoustic matching layer and the piezoelectric vibrator; and a sulfur adsorbing material layer disposed between the acoustic lens and the second electrode layer. | 02-04-2010 |
20100052479 | REMOTE ULTRASONIC TRANSDUCER SYSTEM - An ultrasonic transducer system is provided for monitoring or treating a liquid medium ( | 03-04-2010 |
20100066207 | ULTRASOUND PROBE - A technology is disclosed for actualizing an ultrasound probe that can obtain a high-resolution diagnostic image and is highly reliable. In the technology, a piezoelectric element | 03-18-2010 |
20100109481 | MULTI-APERTURE ACOUSTIC HORN - A device, for transmitting or receiving ultrasonic signals, includes a transducer and an acoustic horn. The transducer is configured to convert between electrical energy and the ultrasonic signals, and may be a micro electromechanical system (MEMS) transducer. The acoustic horn is coupled to the transducer, and includes multiple apertures through which the ultrasonic signals are transmitted or received in order to manipulate at least one of a radiation pattern, frequency response or magnitude of the ultrasonic signals. The multiple apertures have different sizes. | 05-06-2010 |
20100148633 | Ultrasound transducer with a dumbbell-shaped chamber - An ultrasound transducer has a cup-shaped casing. The cup-shaped casing has a sidewall. A cross section of an inner surface of the sidewall being perpendicular to a central axis of the ultrasound transducer substantially shows a dumbbell-shaped contour. The dumbbell-shaped contour has a pair of opposite straight-line sections being substantially parallel to a longitudinal axis of the dumbbell-shaped contour and a pair of opposite arc sections being located respectively at two ends of the longitudinal axis of the dumbbell-shaped contour and respectively forming two enlarged portions of the dumbbell-shaped contour. Two ends of each arc section of the dumbbell-shaped contour respectively joint the straight-line sections through two curve sections and each curve section is connected to one end of the arc section and one straight-line section. At least one enlarged area of a dumbbell-shaped surface of an inside bottom surface has a recessed portion. | 06-17-2010 |
20100156244 | METHODS FOR MANUFACTURING ULTRASOUND TRANSDUCERS AND OTHER COMPONENTS - The invention features methods for the manufacture of electrical components such as ultrasound transducers. In particular, the inventions provides methods of patterning electrodes, e.g., in the connection of an ultrasound transducer to an electrical circuit; methods of depositing metal on surfaces; and methods of making integrated matching layer for an ultrasound transducer. The invention also features ultrasound transducers produced by the methods described herein. | 06-24-2010 |
20100327697 | Acoustic resonator structure comprising a bridge - An acoustic resonator comprises a first electrode a second electrode and a piezoelectric layer disposed between the first and second electrodes. The acoustic resonator further comprises a reflective element disposed beneath the first electrode, the second electrode and the piezoelectric layer. An overlap of the reflective element, the first electrode, the second electrode and the piezoelectric layer comprises an active area of the acoustic resonator. The acoustic resonator also comprises a bridge adjacent to a termination of the active area of the acoustic resonator. | 12-30-2010 |
20100327698 | DIAGNOSTIC ULTRASOUND TRANSDUCER - An ultrasound transducer includes an array of PZT elements mounted on a non-recessed distal surface of a backing block. Between each element and the backing block is a conductive region formed as a portion of a metallic layer sputtered onto the distal surface. Traces on a longitudinally extending circuit board—preferably, a substantially rigid printed circuit board, which may be embedded within the block—connect the conductive region, and thus the PZT element, with any conventional external ultrasound imaging system. A substantially “T” or “inverted-L” shaped electrode is thereby formed for each element, with no need for soldering. At least one longitudinally extending metallic member mounted on a respective lateral surface of the backing block forms a heat sink and a common electrical ground. A thermally and electrically conductive layer, such as of foil, transfers heat from at least one matching layer mounted on the elements to the metallic member. | 12-30-2010 |
20110316389 | ULTRASOUND PROBE AND MANUFACTURING METHOD THEREOF - An ultrasound probe and a method for manufacturing the same are provided. More particularly, a one-dimensional or two-dimensional ultrasound probe having a multi-element-type piezoelectric material is easily manufactured by inserting a flat wire in a backing material, wherein the flat wire is used as a signal cable to supply electrical signals, enabling easy and simple arrangement of piezoelectric units as well as the signal cable. | 12-29-2011 |
20120007472 | THERMAL TRANSFER AND ACOUSTIC MATCHING LAYERS FOR ULTRASOUND TRANSDUCER - Ultrasound transducers and methods of making ultrasound transducers with improved thermal characteristics are provided. An ultrasound transducer includes a piezoelectric element defining a front side and a back side. The ultrasound transducer includes a lens connected to the front side of the piezoelectric element, a heat sink connected to the back side of the piezoelectric element, and a backside matching layer disposed between the piezoelectric element and the heat sink. The backside matching layer is thermally connected to the piezoelectric element and the heat sink, and the backside matching layer is configured to conduct heat from the piezoelectric element to the heat sink. | 01-12-2012 |
20120056512 | PROBE FOR ULTRASONIC DIAGNOSTIC APPARATUS - The present disclosure provides a probe for an ultrasonic diagnostic apparatus. The probe includes a backing layer, a piezoelectric layer disposed on one side of the backing layer, a matching layer disposed on one side of the piezoelectric layer, a signal connector disposed inside the backing layer to transfer a signal to the piezoelectric layer, and a ground connector disposed outside the signal connector. The backing layer, the piezoelectric layer and the matching layer are sequentially disposed and the signal connector is electrically connected to the piezoelectric layer at the other side of the piezoelectric layer. The probe for an ultrasonic diagnostic apparatus includes a stack of the backing layer, the piezoelectric layer and the matching layer, in which the piezoelectric layer is formed to have a certain curvature, thereby achieving performance improvement through minimization of interference from a signal connector and a ground connector. | 03-08-2012 |
20120206015 | ACOUSTIC RESONATOR STRUCTURE COMPRISING A BRIDGE - An acoustic resonator comprises a first electrode a second electrode and a piezoelectric layer disposed between the first and second electrodes. The acoustic resonator further comprises a reflective element disposed beneath the first electrode, the second electrode and the piezoelectric layer. An overlap of the reflective element, the first electrode, the second electrode and the piezoelectric layer comprises an active area of the acoustic resonator. The acoustic resonator also comprises a bridge adjacent to a termination of the active area of the acoustic resonator. | 08-16-2012 |
20120223620 | MULTI-APERTURE ACOUSTIC HORN - A device, for transmitting or receiving ultrasonic signals, includes a transducer and an acoustic horn. The transducer is configured to convert between electrical energy and the ultrasonic signals, and may be a micro electro-mechanical system (MEMS) transducer. The acoustic horn is coupled to the transducer, and includes multiple apertures through which the ultrasonic signals are transmitted or received in order to manipulate at least one of a radiation pattern, frequency response or magnitude of the ultrasonic signals. The multiple apertures have different sizes. | 09-06-2012 |
20120293045 | HIGH-POWER ULTRASONIC PROBE - Provided is an ultrasonic probe, which uses a composite piezo-electric element, which includes a piezo-electric wafer made of piezo-electric material and having a lattice shape, and a polymer filled between the lattices of the piezo-electric wafer. The ultrasonic probe has a high power and a wide band width simultaneously. In addition, since the ultrasonic probe further includes a heat exhaust unit for exhausting the heat generated at the ultrasonic probe to the outside, the temperature of an acoustic lens which contacts patients may be lowered. | 11-22-2012 |
20120313486 | ULTRASONIC PROBE USING REAR-SIDE ACOUSTIC MATCHING LAYER - The present invention relates to an ultrasonic probe and provides the ultrasonic probe in which acoustic matching layers are formed on both sides of a piezoelectric ceramic capable of simultaneously increasing the signal strength of ultrasonic waves and improving the waveform characteristics of the ultrasonic waves. According to the present invention, a rear-side acoustic matching layer is formed in the upper part of a rear-side block. The piezoelectric ceramic is formed in the upper part of the rear-side acoustic matching layer. A front-side acoustic matching layer is formed in the upper part of the piezoelectric ceramic. Further, an acoustic lens is formed in the upper part of the front-side acoustic matching layer. Particularly, the rear-side acoustic matching layer reflects, toward the acoustic lens, the ultrasonic waves which are propagated to the rear-side block. | 12-13-2012 |
20130076208 | ULTRASOUND PROBE AND METHOD OF PRODUCING THE SAME - An ultrasound probe includes a backing member, inorganic piezoelectric elements arranged on a top surface of the backing member, an acoustic matching layer disposed on and extending over the inorganic piezoelectric elements, and organic piezoelectric elements arranged on the acoustic matching layer. | 03-28-2013 |
20130147318 | ULTRASONIC PROBE AND MANUFACTURING METHOD THEREOF - Disclosed herein are an ultrasonic probe having a backing layer formed of a structure which varies acoustic impedance and a manufacturing method thereof. The ultrasonic probe includes a piezoelectric layer and a backing layer provided on a rear surface of the piezoelectric layer, and the backing layer includes a plurality of kerfs formed on a front surface thereof in a lengthwise direction, the front surface being adjacent to the rear surface of the piezoelectric layer, and the kerfs are formed such that the intervals between the kerfs are varied. | 06-13-2013 |
20130207519 | METHODS FOR MANUFACTURING ULTRASOUND TRANSDUCERS AND OTHER COMPONENTS - The invention features methods for the manufacture of electrical components such as ultrasound transducers. In particular, the inventions provides methods of patterning electrodes, e.g., in the connection of an ultrasound transducer to an electrical circuit; methods of depositing metal on surfaces; and methods of making integrated matching layer for an ultrasound transducer. The invention also features ultrasound transducers produced by the methods described herein. | 08-15-2013 |
20140292149 | TEMPERATURE COMPENSATED ACOUSTIC RESONATOR DEVICE - An acoustic resonator device comprises: a substrate comprising a cavity or an acoustic mirror; a first electrode disposed over the substrate; a piezoelectric layer disposed over the first electrode; and a second electrode disposed over the piezoelectric layer. The first electrode or the second electrode, or both, are made of an electrically conductive material having a positive temperature coefficient. | 10-02-2014 |
20140292150 | TEMPERATURE COMPENSATED ACOUSTIC RESONATOR DEVICE HAVING AN INTERLAYER - An acoustic resonator comprises: an acoustic resonator device comprises: a composite first electrode disposed over a substrate, the composite first electrode comprising: a first electrically conductive layer provided over the substrate; a first interlayer disposed on the first electrical conductive layer; a buried temperature compensation layer disposed over the first interlayer; a second interlayer disposed over the temperature compensation layer; a second electrically conductive layer disposed over the second interlayer, a piezoelectric layer disposed over the composite first electrode; and a second electrode disposed over the piezoelectric layer. | 10-02-2014 |
20150108874 | HIGH FREQUENCY ULTRASONIC TRANSDUCER AND MATCHING LAYER COMPRISING CYANOACRYLATE - In one aspect, matching layers for an ultrasonic transducer stack having a matching layer comprising a matrix material loaded with a plurality of micron-sized and nano-sized particles. In another aspect, the matrix material is loaded with a plurality of heavy and light particles. In another aspect, an ultrasound transducer stack comprises a piezoelectric layer and at least one matching layer. In one aspect, the matching layer comprises a composite material comprising a matrix material loaded with a plurality of micron-sized and nano-sized particles. In a further aspect, the composite material can also comprise a matrix material loaded with a plurality of heavy and light particles. In a further aspect, a matching layer can also comprise cyanoacrylate. | 04-23-2015 |
20150115773 | ULTRASOUND TRANSDUCER AND METHOD FOR MANUFACTURING AN ULTRASOUND TRANSDUCER - An ultrasound transducer includes an acoustic layer that includes a micromachined piezoelectric composite body having a front side and an opposite back side. The micromachined piezoelectric composite body is configured to convert electrical signals into ultrasound waves to be transmitted from the front side toward a target. The micromachined piezoelectric composite body is configured to convert received ultrasound waves into electrical signals. A dematching layer is connected to the back side of the micromachined piezoelectric composite body of the acoustic layer. The dematching layer has a higher acoustic impedance than an acoustic impedance of the acoustic layer. | 04-30-2015 |
20160107195 | ULTRASONIC GENERATOR - According to one embodiment, an ultrasonic generator includes a plurality of ultrasonic transducers and a drive unit. The ultrasonic transducers each are configured to generate an ultrasonic wave. The drive unit is configured to supply a drive signal generating the ultrasonic wave to each of the ultrasonic transducers, and configured to change phase of the drive signal supplied to a second ultrasonic transducer among the ultrasonic transducers relative to the drive signal supplied to a first ultrasonic transducer among the ultrasonic transducers. The second ultrasonic transducer is located in a position in which a traveling direction of a combined wave front of a first combined wave is aligned with a frontal direction, the first combined wave being formed by combining the ultrasonic waves generated by each of the first ultrasonic transducer and the second ultrasonic transducer, wherein the position is more frontward in the frontal direction of the first ultrasonic transducer than the first ultrasonic transducer. | 04-21-2016 |