Acoustic Holography Patents (Class 73/603)
  • Patent number: 10969339
    Abstract: Optical readers are disclosed in examples herein. An example optical reader including a light source to emit a light beam; and a spot pattern generator to receive the light beam and to generate a two-dimensional spot array from the light beam, the two-dimensional spot array to be directed toward a substrate having nanostructures, the two-dimensional spot array to be sensed to detect a presence or an absence of a substance of interest on the substrate.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: April 6, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Charles M. Santori, James William Stasiak, Francesco Aieta, Anita Rogacs, Mineo Yamakawa, Kenneth Ward
  • Patent number: 10675000
    Abstract: Changes in tissue stiffness have long been associated with disease. Systems and methods for determining the stiffness of tissues using ultrasonography may include a device for inducing a propagating shear wave in tissue and tracking the speed of propagation, which is directly related to tissue stiffness and density. The speed of a propagating shear wave may be detected by imaging a tissue at a high frame rate and detecting the propagating wave as a perturbance in successive image frames relative to a baseline image of the tissue in an undisturbed state. In some embodiments, sufficiently high frame rates may be achieved by using a ping-based ultrasound imaging technique in which unfocused omni-directional pings are transmitted (in an imaging plane or in a hemisphere) into a region of interest. Receiving echoes of the omnidirectional pings with multiple receive apertures allows for substantially improved lateral resolution.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: June 9, 2020
    Assignee: MAUI IMAGING, INC.
    Inventors: Donald F. Specht, Kenneth D. Brewer
  • Patent number: 10025272
    Abstract: An ultrasonic holography imaging system and method are provided. The ultrasonic holography imaging system includes an ultrasonic transducer array coupled to an analog processing section. The analog processing section is coupled to a digital processing section. The digital processing section generates digital signals to be converted by the analog processing section into analog signals that are transmitted to individual transceiver elements within the ultrasonic transducer array to cause separate ones of the individual transceiver elements to emit ultrasonic waveforms that are differentiated from each other by one or more parameters, including amplitude, frequency, and phase or modulation thereof.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: July 17, 2018
    Inventors: Stephan Falter, Dieter Lingenberg
  • Patent number: 9857338
    Abstract: A scanning acoustic microscope comprises a structure including a loading portion and a scanning portion, a transducer disposed in the scanning portion and operable to develop ultrasonic energy, and a controller. A driver is responsive to the controller and is capable of moving the transducer along a scan path with respect to a first plurality of parts disposed in the scanning portion as a second plurality of parts are being loaded into the loading portion.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: January 2, 2018
    Assignee: Sonoscan, Inc.
    Inventors: Lawrence W. Kessler, Michael G. Oravecz, Thomas Kleinschmidt, John Billone, Bryan Schackmuth, Joachim Minkwitz, Igor Komsky
  • Patent number: 9170236
    Abstract: A scanning acoustic microscope comprises a structure including a loading portion and a scanning portion, a transducer disposed in the scanning portion and operable to develop ultrasonic energy, and a controller. A driver is responsive to the controller and is capable of moving the transducer along a scan path with respect to a first plurality of parts disposed in the scanning portion as a second plurality of parts are being loaded into the loading portion.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 27, 2015
    Assignee: Sonoscan, Inc.
    Inventors: Lawrence W. Kessler, Michael G. Oravecz, Thomas Kleinschmidt, John Billone, Bryan P. Schackmuth, Joachim Minkwitz, Igor Komsky
  • Patent number: 9052606
    Abstract: A microlithographic projection exposure apparatus includes a projection light source. The apparatus also includes a heating light source for generating heating light which is at least partly absorbed by an optical element. An illumination optical unit directs the heating light onto the optical element such that the heating light has a predefined intensity distribution on an optical surface of the optical element. The illumination optical unit includes a deflection element which is a diffractive optical element or a refractive freeform element. The deflection element simultaneously directs the heating light impinging thereon in different directions.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: June 9, 2015
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Andras G. Major, Manfred Maul, Gundula Weiss, Jochen Hetzler
  • Publication number: 20150090036
    Abstract: A method of imaging a test subject includes providing one or more moveable sensors to sense an attribute of the test subject (e.g., acoustic pressure), wherein the attribute has a tonal noise component and a broadband noise component. A rotational sensor is provided to sense a rotational velocity of a rotational element of the test subject. Each of the moveable sensors are moved along a path while continuously acquiring test data that is indicative of the rotational velocity of the rotational element, the sensed attribute, the position, and the orientation of each of the moveable sensors. A set of transfer functions corresponding to points in space that have been visited by the moveable sensors are constructed, each of the transfer functions relating the test data of the moveable sensors to the test data of the rotational sensor. A visual representation of the tonal noise component of the attribute in a region adjacent the test subject is produced using the set of transfer functions.
    Type: Application
    Filed: August 27, 2014
    Publication date: April 2, 2015
    Inventors: Havard I. Vold, Parthiv N. Shah
  • Patent number: 8701492
    Abstract: An ultrasonic measurement method and an ultrasonic measurement apparatus are capable of performing an inspection for a short time with a high SN ratio and a small variation An ultrasonic measurement method and an ultrasonic measurement apparatus are capable of performing an inspection for a short time with a high SN ratio and a small variation in sensitivity in a process for detecting a defect in all directions at 360 degrees using a matrix array sensor without performing mechanical scanning in all directions, while reducing noise that is caused by a bottom surface echo. An element selecting circuit selects a group of a plurality of ultrasonic transducer elements for transmission from among ultrasonic transducer elements that constitute a two-dimensional array sensor so that the ultrasonic transducer elements for selected for transmission are arranged in line symmetry with respect to a first line symmetric axis to set the group selected for transmission.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: April 22, 2014
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Hirohisa Mizota, Naoyuki Kono, Atsushi Baba
  • Patent number: 8701491
    Abstract: A method of performing near-field acoustic holography comprises the following steps. Establishing (102) acoustic data representing a set of near-field acoustic holography measurements at a first set of positions. Extrapolating (204) acoustic data using a model-based extrapolation to obtain extrapolated acoustic data relating to a plurality of positions outside the aperture. Applying (108) a spatial frequency transform to the padded acoustic data to obtain data in a spatial frequency domain. Propagating (110) the Fourier transformed acoustic data. Applying (112) a regularization in a wavenumber domain. Performing (114) an inverse spatial frequency transform.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: April 22, 2014
    Assignees: Stichting voor de Technische Wetenschapen, Technische Universiteit Eindhoven
    Inventors: Rick Scholte, Ines Lopez Arteaga
  • Patent number: 8601876
    Abstract: The invention may be embodied as a fingerprint scanner having an ultrasonic wave detector, a platen, an ultrasonic wave generator located between the detector and the platen. The invention may be embodied as a method of scanning a finger. One such method includes providing a platen, a detector and a generator, the generator being placed between the platen and the detector. A finger may be provided on the platen, and an ultrasound wave pulse may be sent from the generator toward the finger. The wave pulse may be reflected from the finger, and received at the detector. The received wave pulse may be used to produce an image of the finger.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: December 10, 2013
    Assignee: Qualcomm Incorporated
    Inventors: John K. Schneider, Jack C. Kitchens, James T. Baker
  • Patent number: 8565510
    Abstract: Methods for tracking the identity of die after singulation from a wafer. The product chips and die include a pattern of features formed in a metallization level of a back-end-of-line (BEOL) wiring structure. The features in the pattern contain information relating to the die, such as a unique identifier that includes a wafer identification used to fabricate the die and a product chip location for the die on a wafer. The features may be imaged with the assistance of a beam of electromagnetic radiation that penetrates into a packaged die and is altered by the presence of the features in a way that promotes imaging.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: October 22, 2013
    Assignee: International Business Machines Corporation
    Inventors: John M. Cohn, Mark J. Flemming, John C. Malinowski, Karl V. Swanke
  • Patent number: 8438927
    Abstract: A system and method for analyzing a sample is described. The system may include, for example, a light source and a scanning probe microscope probe. The light source may generate a coherent laser beam that is modulated by a waveform of a lower frequency. The modulated laser beam is absorbed by the sample causing thermally induced expansion and resulting in an excitation of acoustic waves. The probe is locally deployed near the sample and detects, in real time, perturbations in the excited acoustic waves to detect surface and buried structures of the sample.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: May 14, 2013
    Assignee: Northwestern University
    Inventors: Gajendra S. Shekhawat, Vinayak P. Dravid
  • Patent number: 8397574
    Abstract: An ultrasonic transducer (100) includes a substrate (1) having a first electrode therein or on a surface thereof and a diaphragm (5) having a second electrode therein or on a surface thereof, with a cavity (4) therebetween. Further, at least one beam (7) is provided on a surface or inside of the diaphragm (5) or the second electrode.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: March 19, 2013
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Hiroki Tanaka, Takashi Azuma, Hiroshi Fukuda
  • Patent number: 8371172
    Abstract: A method and system for predicting acoustic fields based on generalized moving frame acoustic holography are disclosed. The method includes acquiring a first wavenumber spectrum on a measurement plane according to a moving coordinate system, converting the first wavenumber spectrum to a second wavenumber spectrum on a reference coordinate system using a relative velocity between the measurement plane and a medium, converting the second wavenumber spectrum to a third wavenumber spectrum on a prediction plane using an acoustic wave propagation theory, converting the third wavenumber spectrum to a fourth wavenumber spectrum on a moving coordinate system using a relative velocity between the medium and the prediction plane, and computing acoustic fields on the prediction plane using the fourth wavenumber spectrum.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: February 12, 2013
    Assignee: Korea Research Institute of Standards and Science
    Inventor: Hyu-Sang Kwon
  • Publication number: 20130033976
    Abstract: An acoustic hologram imaging system constructed from a machined housing having folded optics. Various surfaces of the housing are machined to provide a precise alignment to the optical members to be connected thereto, such as a mirror, a lens assembly, a light emitting laser diode, a camera, and the like. A three-part lens is described having different materials with different indexes of refraction in order to provide a desired focus of the light. In addition, an optical spatial filter is disclosed in which, according to various embodiments, all, some, or none of the light passing therethrough is attenuated for recording of the optical image of the hologram.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 7, 2013
    Applicant: ADVANCED IMAGING TECHNOLOGIES, INC.
    Inventors: Todd F. Garlick, George F. Garlick
  • Patent number: 8316713
    Abstract: A high spatial resolution phase-sensitive technique employs a scanning near field ultrasound holography (SNFUH) methodology for imaging elastic as well as viscoelastic variations across a sample surface. SNFUH uses a near-field approach to measure time-resolved variations in ultrasonic oscillations at a sample surface. As such, it overcomes the spatial resolution limitations of conventional phase-resolved acoustic microscopy (i.e. holography) by eliminating the need for far-field acoustic lenses.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: November 27, 2012
    Assignee: Northwestern University
    Inventors: Gajendra Shekhawat, Vinayak P. Dravid
  • Patent number: 8255180
    Abstract: The acoustographic dynamic range extending device and method determines thresholds to reach a preset brightness with a test part and without a test part and transforms these thresholds to image data, where the thresholds can be time thresholds obtained with a single driving voltage and can be voltage thresholds obtained with an increasing driving voltage.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: August 28, 2012
    Assignee: Santec Systems Inc.
    Inventor: Jaswinder Sandhu
  • Patent number: 8132462
    Abstract: The receive sensitivity of an ultrasound array transducer structured with a diaphragm electro-acoustic transducer (101) being a basic unit is affected by change in a charge amount with elapsed time due to leakage or the like, which causes drift of the primary beam sensitivity, degradation in the acoustic SN ratio due to a rise in the acoustic noise level, and degradation in the directivity of an ultrasound beam. To addressing this problem, a charge controller (charge monitor 211) is provided to control charge in an electro-acoustic transducer (101). A charge monitoring section (102) monitors the change in the charge amount. When change in the charge amount is small, transmit sensitivity or receive sensitivity is calibrated by a controller (104) by, for example, multiplying a receive signal by a calibration coefficient corresponding to the change amount. Further, when the change in the charge amount is large, for example, charges can be re-emitted from a charge emitter (103).
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: March 13, 2012
    Assignee: Hitachi Medical Corporation
    Inventors: Takashi Azuma, Shinichiro Umemura, Tatsuya Nagata, Hiroshi Fukuda, Shuntaro Machida, Toshiyuki Mine
  • Publication number: 20110293171
    Abstract: A continuous scanning method employs one or more moveable sensors and one or more reference sensors deployed in the environment around a test subject. Each sensor is configured to sense an attribute of the test subject (e.g., sound energy, infrared energy, etc.) while continuously moving along a path and recording the sensed attribute, the position, and the orientation of each of the moveable sensors and each of the reference sensors. The system then constructs a set of transfer functions corresponding to points in space between the moveable sensors, wherein each of the transfer functions relates the test data of the moveable sensors to the test data of the reference sensors. In this way, a graphical representation of the attribute in the vicinity of test subject can be produced.
    Type: Application
    Filed: December 30, 2010
    Publication date: December 1, 2011
    Applicant: ATA ENGINEERING, INC.
    Inventors: Havard I. Vold, Paul G. Bremner, Parthiv N. Shah
  • Patent number: 8042397
    Abstract: In one embodiment, a system to characterize an anomaly in a laminate structure comprises a plurality of actuators to generate a wave signal into a structure being evaluated, a plurality of sensors to collect scattered wave data caused by energy of the wave signal being at least partially reflected or scattered by an anomaly, and a structural health monitoring unit. In some embodiments the structural health monitoring unit executes a scatter imaging algorithm to generate three dimensional image data for the anomaly from the scattered wave data, extracts a scatter volume from the from the scattered wave data, and generates a damage volume estimate and a damage depth estimate from the scattered wave data. Other embodiments may be described.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: October 25, 2011
    Assignee: The Boeing Company
    Inventor: Jeong-Beom Ihn
  • Patent number: 8015877
    Abstract: A method for generating an image of an anomaly may include generating a pulse wave into a structure being evaluated from each of a plurality of sensors and collecting any scattered wave data caused by the pulse wave impacting an anomaly. The scattered wave data may be collected by the same sensor that generated the pulse wave or by a different sensor. The method may also include identifying any backscattered wave data from a distal edge or border of any anomaly relative to a location of the sensor collecting the scattered wave data. The method may additionally include processing the backscattered wave data from each of the sensors collecting the scattered wave data to generate a two dimensional image of any anomaly. The method may further include presenting the two dimensional image of any anomaly.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: September 13, 2011
    Assignee: The Boeing Company
    Inventor: Jeong-Beom Ihn
  • Publication number: 20110120222
    Abstract: A method of performing near- field acoustic holography comprises the following steps. Establishing (102) acoustic data representing a set of near-field acoustic holography measurements at a first set of positions. Extrapolating (204) acoustic data using a model-based extrapolation to obtain extrapolated acoustic data relating to a plurality of positions outside the aperture. Applying a spatial frequency transform to the padded acoustic data to obtain data in a spatial frequency domain. Propagating (110) the Fourier transformed acoustic data. Applying (112) a regularization in a wavenumber domain. Performing (114) an inverse spatial frequency transform.
    Type: Application
    Filed: April 22, 2009
    Publication date: May 26, 2011
    Inventors: Rick Scholte, Ines Lopez Arteaga
  • Publication number: 20110036169
    Abstract: A high spatial resolution phase-sensitive technique employs a scanning near field ultrasound holography (SNFUH) methodology for imaging elastic as well as viscoelastic variations across a sample surface. SNFUH uses a near-field approach to measure time-resolved variations in ultrasonic oscillations at a sample surface. As such, it overcomes the spatial resolution limitations of conventional phase-resolved acoustic microscopy (i.e. holography) by eliminating the need for far-field acoustic lenses.
    Type: Application
    Filed: September 21, 2010
    Publication date: February 17, 2011
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Gajendra Shekhawat, Vinayak P. Dravid
  • Publication number: 20110036170
    Abstract: A system and method for analyzing a sample is described. The system may include, for example, a light source and a scanning probe microscope probe. The light source may generate a coherent laser beam that is modulated by a waveform of a lower frequency. The modulated laser beam is absorbed by the sample causing thermally induced expansion and resulting in an excitation of acoustic waves. The probe is locally deployed near the sample and detects, in real time, perturbations in the excited acoustic waves to detect surface and buried structures of the sample.
    Type: Application
    Filed: October 1, 2010
    Publication date: February 17, 2011
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Gajendra S. Shekhawat, Vinayak P. Dravid
  • Publication number: 20100319455
    Abstract: In one embodiment, a system to characterize an anomaly in a laminate structure comprises a plurality of actuators to generate a wave signal into a structure being evaluated, a plurality of sensors to collect scattered wave data caused by energy of the wave signal being at least partially reflected or scattered by an anomaly, and a structural health monitoring unit. In some embodiments the structural health monitoring unit executes a scatter imaging algorithm to generate three dimensional image data for the anomaly from the scattered wave data, extracts a scatter volume from the from the scattered wave data, and generates a damage volume estimate and a damage depth estimate from the scattered wave data. Other embodiments may be described.
    Type: Application
    Filed: December 1, 2009
    Publication date: December 23, 2010
    Inventor: JEONG-BEOM IHN
  • Patent number: 7836766
    Abstract: The present invention relates to a method of acquiring an ultrasound image in an ultrasound imaging system having an array transducer, comprising: a) setting an image point at a predetermined depth on an ultrasound image acquired based on a reference speed of sound for a target object; b) setting a range of speed of sound with reference to the reference speed; c) setting a plurality of speeds of sound in a predetermined interval within the range of speed of sound; d) acquiring ultrasound images at each speed of sound; e) calculating an amplitude of an image point set at a predetermined depth of each ultrasound image; f) determining a real speed of sound in the target object based on the calculated amplitude; and g) acquiring an ultrasound image based on the determined real speed of sound in the target object.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: November 23, 2010
    Assignee: Medison Co., Ltd.
    Inventors: Mok Keun Jeong, Sung Jae Kwon, Ra Young Yoon
  • Patent number: 7798001
    Abstract: A high spatial resolution phase-sensitive technique employs a scanning near field ultrasound holography (SNFUH) methodology for imaging elastic as well as viscoelastic variations across a sample surface. SNFUH uses a near-field approach to measure time-resolved variations in ultrasonic oscillations at a sample surface. As such, it overcomes the spatial resolution limitations of conventional phase-resolved acoustic microscopy (i.e. holography) by eliminating the need for far-field acoustic lenses.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: September 21, 2010
    Assignee: Northwestern University
    Inventors: Gajendra Shekhawat, Vinayak P. Dravid
  • Patent number: 7739912
    Abstract: The invention may be embodied as a fingerprint scanner having an ultrasonic wave detector, a platen, an ultrasonic wave generator located between the detector and the platen. The invention may be embodied as a method of scanning a finger. One such method includes providing a platen, a detector and a generator, the generator being placed between the platen and the detector. A finger may be provided on the platen, and an ultrasound wave pulse may be sent from the generator toward the finger. The wave pulse may be reflected from the finger, and received at the detector. The received wave pulse may be used to produce an image of the finger.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: June 22, 2010
    Assignee: Ultra-Scan Corporation
    Inventors: John K. Schneider, Jack C. Kitchens, James T. Baker
  • Patent number: 7650789
    Abstract: A method for examining the interior material of an object, such as a pipeline or a human body, from a surface of an object using ultrasound having a frequency of at least 100 KHz, wherein the ultrasound is supplied to the interior material of the object. The reflections and/or diffractions of the ultrasound from the interior material of the object are received using ultrasonic receivers which are acoustically coupled to the surface of the object at positions which are distributed in two dimensions of the surface of the object, at different points in time or not, wherein, with each of the feelers, a receiving signal is generated, wherein the receiving signals are processed in combination in order to determine, according to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: January 26, 2010
    Assignees: Rontgen Technische Dienst B.V., Technische Universiteit Delft
    Inventors: Niels Pƶrtzgen, Andries Gisolf
  • Publication number: 20090301199
    Abstract: The receive sensitivity of an ultrasound array transducer structured with a diaphragm electro-acoustic transducer (101) being a basic unit is affected by change in a charge amount with elapsed time due to leakage or the like, which causes drift of the primary beam sensitivity, degradation in the acoustic SN ratio due to a rise in the acoustic noise level, and degradation in the directivity of an ultrasound beam. To addressing this problem, a charge controller (charge monitor 211) is provided to control charge in an electro-acoustic transducer (101). A charge monitoring section (102) monitors the change in the charge amount. When change in the charge amount is small, transmit sensitivity or receive sensitivity is calibrated by a controller (104) by, for example, multiplying a receive signal by a calibration coefficient corresponding to the change amount. Further, when the change in the charge amount is large, for example, charges can be re-emitted from a charge emitter (103).
    Type: Application
    Filed: January 30, 2006
    Publication date: December 10, 2009
    Inventors: Takashi Azuma, Shinichiro Umemura, Tatsuya Nagata, Hiroshi Fukuda, Shuntaro Machida, Toshiyuki Mine
  • Publication number: 20090301200
    Abstract: An ultrasonic transducer (100) includes a substrate (1) having a first electrode therein or on a surface thereof and a diaphragm (5) having a second electrode therein or on a surface thereof, with a cavity (4) therebetween. Further, at least one beam (7) is provided on a surface or inside of the diaphragm (5) or the second electrode.
    Type: Application
    Filed: August 2, 2006
    Publication date: December 10, 2009
    Inventors: Hiroki Tanaka, Takashi Azuma, Hiroshi Fukuda
  • Publication number: 20090114024
    Abstract: A high spatial resolution phase-sensitive technique employs a scanning near field ultrasound holography (SNFUH) methodology for imaging elastic as well as viscoelastic variations across a sample surface. SNFUH uses a near-field approach to measure time-resolved variations in ultrasonic oscillations at a sample surface. As such, it overcomes the spatial resolution limitations of conventional phase-resolved acoustic microscopy (i.e. holography) by eliminating the need for far-field acoustic lenses.
    Type: Application
    Filed: October 2, 2008
    Publication date: May 7, 2009
    Inventors: Gajendra Shekhawat, Vinayak P. Dravid
  • Patent number: 7451650
    Abstract: Systems and methods for adjusting gain are described. The systems includes a probe. The probe includes a housing, a transducer element configured to receive a signal, and an adjustable gain amplifier located inside the housing and configured to adjust a gain provided to the signal based on a function having a slope other than zero.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: November 18, 2008
    Assignee: General Electric Company
    Inventors: Thomas Halvorsrod, Kjell Kristoffersen
  • Patent number: 7448269
    Abstract: A high spatial resolution phase-sensitive technique employs a scanning near field ultrasound holography (SNFUH) methodology for imaging elastic as well as viscoelastic variations across a sample surface. SNFUH uses a near-field approach to measure time-resolved variations in ultrasonic oscillations at a sample surface. As such, it overcomes the spatial resolution limitations of conventional phase-resolved acoustic microscopy (i.e. holography) by eliminating the need for far-field acoustic lenses.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: November 11, 2008
    Assignee: Northwestern University
    Inventors: Gajendra Shekhawat, Vinayak P. Dravid
  • Patent number: 7259897
    Abstract: An acoustical holographic imaging method and apparatus for introducing a reference wave into a hologram surface such that the reference wave does not interfere with an object placed adjacent to or in close proximity to the hologram surface. More particularly, the ultrasonic holographic imaging system may use a reference wave introduced on the side of a thin (3 element) detector that acts as a wave guide; to introduce the reference wave to a liquid-to-gas interface or alternatively, from the topside of the detecting surface through a liquid-to-liquid interface. The system eliminates the acoustic lens system, thereby reducing the size and cost of the system. Further, an object may be placed at the detecting surface, increasing the depth of field of the resultant image and reducing the energy needed from the object source. The system may additionally utilize multiple reference sources.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: August 21, 2007
    Assignee: Holographic Engineering LLC
    Inventors: George F. Garlick, Todd F. Garlick
  • Patent number: 7048689
    Abstract: To reduce the cost while maintaining the real time environment in receiving ultrasonic waves in an ultrasonic receiving apparatus which is capable of reducing changes in detection sensitivity due to environmental changes in the ultrasonic detecting element. The ultrasonic receiving apparatus comprises a light source for generating broadband light, an ultrasonic detecting element including an ultrasonic sensing portion that expands and contracts in response to a received ultrasonic wave and has optical reflectance that changes in accordance with expansion and contraction thereby performing intensity modulation on the light, spectrum-separating means for spectrum-separating the light, first photo-detecting means having a plurality of photoelectric conversion elements for detecting the light for plural wavelength components, and second photo-detecting means for detecting a selected wavelength component included in the light on the basis of a detection result of the first photo-detecting means.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: May 23, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Eiji Ogawa
  • Patent number: 6831874
    Abstract: There is disclosed an improved ultrasonic hologram or other ultrasonic imaging process that accurately forms phase and amplitude information of the hologram in a manner that renders the unit relatively insensitive to environment vibrations, and provides long maintenance free functioning lifetime. Specifically, there is disclosed an improved ultrasonic hologram detector component that forms an ultrasonic hologram on the surface of a detection deformable detector material, resulting from the deformation of the surface. The surface deformation is due to the reflection of an ultrasound (ultrasonic) energy profile of the combination of an “object wave” that passes through an object and that of a “reference wave” that is directed to the surface at an off axis angle from the “object wave”.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: December 14, 2004
    Assignee: Advanced Imaging Technologies, Inc.
    Inventors: George F. Garlick, Jerod O. Shelby
  • Publication number: 20040200284
    Abstract: An improved scanning station and method for a tray-fed scanning acoustic microscope has a vacuum system which at least assists in immobilizing loosely held parts in the trays during insonification by an ultrasonic beam generator.
    Type: Application
    Filed: April 9, 2004
    Publication date: October 14, 2004
    Inventors: Lawrence Kessier, John Billone
  • Patent number: 6757215
    Abstract: A method and apparatus for generating an acoustic holographic image having a plurality of pulses with different characteristic parameters from each other. More particularly, a sequence contains a plurality of pulses which have different characteristic parameters from each other. An image is created for each sequence and the effect of each pulse in creating the image is varied based on the variation of the characteristic parameter for each pulse. A selectively enhanced acoustic image is thereby obtained.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: June 29, 2004
    Assignee: Advanced Imaging Technologies, Inc.
    Inventors: George F. Garlick, Jerod O. Shelby, Ronald L. Shelby
  • Patent number: 6709393
    Abstract: An optical detection type ultrasonic receiving apparatus in which S/N ratio of the detection signal is increased while preventing the apparatus from increase of size and cost. The ultrasonic receiving apparatus includes a light source for generating broadband light, an ultrasonic detecting element including an ultrasonic sensing portion to perform intensity modulation of the light, a spectrum-separating unit for spectrum-separating the modulated light, a photo detecting unit having a plurality of photoelectric converting elements for detecting the spectrum-separated light for each of plural wavelength components to generate at least a first detection signal of a first wavelength component and a second detection signal of a second wavelength component, and processing unit for carrying out processing operation using the first detection signal and the second detection signal to obtain information about the ultrasonic wave received by the ultrasonic detecting element.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: March 23, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Eiji Ogawa
  • Patent number: 6680994
    Abstract: The contents of a container 1 are non-intrusively monitored by probing the container with an ultrasonic signal, and measuring changes in the ultrasound signature of the received signal after the signal has passed through the contents of the container.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: January 20, 2004
    Assignee: British Nuclear Fuels PLC
    Inventors: Gordon Rees Jones, Keith Woolley, Joseph William Spencer, Gary Jones, Perminder Tony Singh, Robert McAlpine Dickson, John Raymond Gibson
  • Patent number: 6672165
    Abstract: An acoustoelectronic method and apparatus for generating real-time three-dimensional images of an object and characterizing such object are provided. The object is insonified with an incident acoustic signal derived from an electrical signal. Acoustic signals scattered from the object are collected by an acoustic receiver, which generates analog electrical signals that are subsequently converted to digital electronic signals. The digital electronic signals are used in both direct-imaging and holographic methods to produce a three-dimensional representation of the object from which images and characterizations can be generated.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: January 6, 2004
    Assignee: Barbara Ann Karmanos Cancer Center
    Inventors: John D. G. Rather, H. John Caulfield, Richard D. Doolittle, Glenn W. Zeiders, Gregory W. Auner
  • Patent number: 6590830
    Abstract: There is disclosed a series of process and apparatus modifications to ultrasonic holography imaging systems that each or together function to enhance image quality of ultrasonic holography images. Specifically, there is disclosed a process and apparatus for generating multiple exposure ultrasonic holography images generated from selected orientations, each of which insures multiple images, multiple intensities (amplitudes) and multiple frequencies from each orientation. The inventive process and apparatus for providing multiple view, multiple angle, and multiple frequency or intensity transmissive ultrasound imaging of the internal structures of an object provides an object sound intensity of equal or near equal intensity across the entire field of the object, such as a human breast.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: July 8, 2003
    Assignee: Advanced Imaging Technologies, Inc.
    Inventors: George F. Garlick, Ronald L. Shelby, Jerod O. Shelby
  • Patent number: 6460414
    Abstract: An automated acoustic micro imaging system includes a part-storage station favoring a dry environment, a part-transport robot, and a wet-environment inspection station. The wet-environment inspection station has an ultrasonic beam generator, a coupling fluid in which parts are inspected, and a part-retention stage. A moisture barrier is located between the wet-environment inspection station and the part-storage station favoring a dry environment. The inspection station includes a kinematic, quick-change part-retaining chuck and robotic means for interchanging chucks. Automatic acoustic micro imaging methods are disclosed.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: October 8, 2002
    Assignee: Sonoscan, Inc.
    Inventors: Daniel M. Erickson, Daniel W. Micek, Michael G. Oravecz
  • Patent number: 6353576
    Abstract: There is disclosed an improved ultrasonic hologram or other ultrasonic imaging process that accurately forms phase and amplitude information of the hologram in a manner that renders the unit relatively insensitive to environment vibrations, and provides long maintenance free functioning lifetime. Specifically, there is disclosed an improved ultrasonic hologram detector component that forms an ultrasonic hologram on the surface of a detection fluid, resulting from the deformation of the surface. The surface deformation is due to the reflection of an ultrasound (ultrasonic) energy profile of the combination of an “object wave” that passes through an object and that of a “reference wave” that is directed to the surface at an off axis angle from the “object wave”.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: March 5, 2002
    Assignee: Advanced Diagnostics Systems, Inc.
    Inventors: George F. Garlick, Jerod O. Shelby
  • Patent number: 6246253
    Abstract: Disclosed is a system for testing liquid crystal and end seal of liquid crystal displays. In the present invention, a test unit P for liquid crystal distribution is disposed at a side of a loading unit L. The test unit P for liquid crystal distribution is disposed orthogonal to a test unit G for end seal. Unloading units Ug, Ur, Uj of good, repair, reject are disposed in parallel by a selected distance. A robot unit R one by one to the respective testing units, is disposed between the loading and unloading units L,U. An operating panel S is installed between the test units P,G according to the test result and a monitor M displaying the liquid crystal injecting hole is installed at the operating panel S. Furthermore, the investigator may conduct two tests for liquid crystal and for end seal simultaneously at one position in front of the operating panel S.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: June 12, 2001
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Eung Cheol Kang, Suk Jin Jeong, Chan Joon Yoon
  • Patent number: 5796003
    Abstract: An ultrasonic inspection system for inspecting a test object and producing substantially artifact-free images, which system includes (1) a sound source for emitting ultrasonic energy toward a test object, (2) a liquid crystal detector for detecting emitted ultrasonic energy and displaying an image, and (3) a coupling medium for sonically coupling the sound source, the test object and the detector. The ultrasonic energy is emitted at each of a plurality of frequencies within a predetermined range. It has been determined that the ultrasonic energy insonifing the object can be caused to scan the object and be angularly varied with respect thereto. Moreover, the rate of frequency scanning is substantially less that the detector image decay so as to produce a substantially flicker-free image. The angular variation is performed by rocking the sound source through a small angle, such as 2.degree. to 6.degree. relative to the liquid crystal detector.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: August 18, 1998
    Inventors: Jaswinder S. Sandhu, Witold J. Popek, Honghui Wang
  • Patent number: 5627319
    Abstract: A new method of Acoustic Holography permits moving 3-D scenes by replacing a fixed film record of an interference pattern with a "live interference pattern" which is continuously altered by the information on a rotating CD.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: May 6, 1997
    Inventor: Ronald J. Greene
  • Patent number: 5469511
    Abstract: There is disclosed an omnipresent sound system for use by a listener in an artificial reality system which operates to couple sound with the presented objects such that as the sound moves with respect to the user, the user will have the perception of the changing sound both in pitch and in volume. The sound system is comprised of a series of piezoelectric elements spaced apart around a user's head. The system is designed to program each element individually so as to create the illusion of omnipresent three-dimensional sound in conjunction with images presented to the listener, which images define an artificial environment.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: November 21, 1995
    Assignee: Texas Instruments Incorporated
    Inventors: Russell F. Lewis, Steven F. Martin, Dale A. Cone, Norman A. Josephson
  • Patent number: 5329817
    Abstract: A preferred embodiment of this invention is illustrated in FIG. 4 showing an offset and tilted object transducer 50 being rotated about a system axis 51 to sequentially insonify the object from various acute incident angles .theta. to the system axis to provide images of the out-of-focus structures at spaced locations at the hologram detection surface 18 at different spaced times. If the pulse rate of the object transducer is greater than the fusion of the eye, the eye is able to average two or more images into a single perceived image. Likewise, video equipment that receives images at a rate greater than 30 Hertz will average two or more images and display the image at a rate of approximately 30 Hertz. Additionally, external video processing may be utilized to electronically average two or more images electronically to obtain an averaged image at any time constant desired by the operator.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: July 19, 1994
    Assignee: Advanced Imaging Systems
    Inventors: George F. Garlick, Glen C. Dunham