Patents Represented by Attorney John P. Wooldridge
  • Patent number: 8351569
    Abstract: X-ray phase sensitive wave-front sensor techniques are detailed that are capable of measuring the entire two-dimensional x-ray electric field, both the amplitude and phase, with a single measurement. These Hartmann sensing and 2-D Shear interferometry wave-front sensors do not require a temporally coherent source and are therefore compatible with x-ray tubes and also with laser-produced or x-pinch x-ray sources.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: January 8, 2013
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Kevin Louis Baker
  • Patent number: 8342005
    Abstract: All-optical photoacoustic spectrometer sensing systems (PASS system) and methods include all the hardware needed to analyze the presence of a large variety of materials (solid, liquid and gas). Some of the all-optical PASS systems require only two optical-fibers to communicate with the opto-electronic power and readout systems that exist outside of the material environment. Methods for improving the signal-to-noise are provided and enable mirco-scale systems and methods for operating such systems.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: January 1, 2013
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Jack Kotovsky, William J. Benett, Angela C. Tooker, Jennifer B. Alameda
  • Patent number: 8335420
    Abstract: Single, or near single transverse mode waveguide definition is produced using a single homogeneous medium to transport both the pump excitation light and generated laser light. By properly configuring the pump deposition and resulting thermal power generation in the waveguide device, a thermal focusing power is established that supports perturbation-stable guided wave propagation of an appropriately configured single or near single transverse mode laser beam and/or laser pulse.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: December 18, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Raymond J. Beach, Jay W. Dawson, Michael J. Messerly, Christopher P. J. Barty
  • Patent number: 8335555
    Abstract: A wave-based tomographic imaging method and apparatus based upon one or more rotating radially outward oriented transmitting and receiving elements have been developed for non-destructive evaluation. At successive angular locations at a fixed radius, a predetermined transmitting element can launch a primary field and one or more predetermined receiving elements can collect the backscattered field in a “pitch/catch” operation. A Hilbert space inverse wave (HSIW) algorithm can construct images of the received scattered energy waves using operating modes chosen for a particular application. Applications include, improved intravascular imaging, bore hole tomography, and non-destructive evaluation (NDE) of parts having existing access holes.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: December 18, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Sean K. Lehman
  • Patent number: 8330114
    Abstract: Systems that increase the position resolution and granularity of double sided segmented semiconductor detectors are provided. These systems increase the imaging resolution capability of such detectors, either used as Compton cameras, or as position sensitive radiation detectors in imagers such as SPECT, PET, coded apertures, multi-pinhole imagers, or other spatial or temporal modulated imagers.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: December 11, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Lucian Mihailescu, Kai M. Vetter, Daniel H. Chivers
  • Patent number: 8328967
    Abstract: Sol-gel chemistry is used to prepare igniters comprising energetic multilayer structures coated with energetic materials. These igniters can be tailored to be stable to environmental aging, i.e., where the igniters are exposed to extremes of both hot and cold temperatures (?30 C to 150 C) and both low (0%) and high relative humidity (100%).
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: December 11, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Troy W. Barbee, Jr., Randall L. Simpson, Alexander E. Gash, Joe H. Satcher, Jr.
  • Patent number: 8320650
    Abstract: In vivo endoscopic methods an apparatuses for implementation of fluorescence and autofluorescence microscopy, with and without the use of exogenous agents, effectively (with resolution sufficient to image nuclei) visualize and categorize various abnormal tissue forms.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: November 27, 2012
    Assignees: Lawrence Livermore National Security, LLC, The Regents of the University of California
    Inventors: Stavros G. Demos, Shiro Urayama, Bevin Lin, Ramez Moussa Ghobrial Saroufeem
  • Patent number: 8314400
    Abstract: Methods for fabricating three-dimensional PIN structures having conformal electrodes are provided, as well as the structures themselves. The structures include a first layer and an array of pillars with cavity regions between the pillars. A first end of each pillar is in contact with the first layer. A segment is formed on the second end of each pillar. The cavity regions are filled with a fill material, which may be a functional material such as a neutron sensitive material. The fill material covers each segment. A portion of the fill material is etched back to produce an exposed portion of the segment. A first electrode is deposited onto the fill material and each exposed segment, thereby forming a conductive layer that provides a common contact to each the exposed segment. A second electrode is deposited onto the first layer.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: November 20, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Rebecca J. Nikolic, Adam M. Conway, Robert T. Graff, Catherine Reinhardt, Lars F. Voss, Qinghui Shao
  • Patent number: 8309929
    Abstract: Compact tunable optical cavities are provided for in-situ NIR spectroscopy. MEMS-tunable VCSEL platforms represents a solid foundation for a new class of compact, sensitive and fiber compatible sensors for fieldable, real-time, multiplexed gas detection systems. Detection limits for gases with NIR cross-sections such as O2, CH4, COx and NOx have been predicted to approximately span from 10ths to 10s of parts per million. Exemplary oxygen detection design and a process for 760 nm continuously tunable VCSELS is provided. This technology enables in-situ self-calibrating platforms with adaptive monitoring by exploiting Photonic FPGAs.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: November 13, 2012
    Assignee: Lawrence Livermore National Security, LLC.
    Inventors: Tiziana Bond, Garrett Cole, Lynford Goddard
  • Patent number: 8284809
    Abstract: A pulse of laser light is switched out of a pulse train and spatially dispersed into its constituent wavelengths. The pulse is collimated to a suitable size and then diffracted by high groove density multilayer dielectric gratings. This imparts a different angle to each individual wavelength so that, when brought to the far field with a lens, the colors have spread out in a linear arrangement. The distance between wavelengths (resolution) can be tailored for the specific laser and application by altering the number of times the beam strikes the diffraction gratings, the groove density of the gratings and the focal length of the lens. End portions of the linear arrangement are each directed to a respective detector, which converts the signal to a 1 if the level meets a set-point, and a 0 if the level does not. If both detectors produces a 1, then the pulse train is allowed to propagate into an optical system.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: October 9, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: James P. Armstrong, Steven James Telford, Rodney Kay Lanning, Andrew James Bayramian
  • Patent number: 8268234
    Abstract: New cermets with improved properties and applications are provided. These new cermets have lower density and/or higher hardness than B4C cermet. By incorporating other new ceramics into B4C powders or as a substitute for B4C, lower densities and/or higher hardness cermets result. The ceramic powders have much finer particle size than those previously used which significantly reduces grain size of the cermet microstructure and improves the cermet properties.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 18, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Richard Lee Landingham
  • Patent number: 8264121
    Abstract: Electrostatic generators/motors designs are provided that include a stator fixedly connected to a first central support centered about a central axis. The stator elements are attached to the first central support. Similarly, a second stator is connected to a central support centered about the central axis, and the second stator has stator elements attached to the second central support. A rotor is located between the first stator and the second stator and includes an outer support, where the rotor is rotatably centered about the central axis, the rotor having elements in contact with the outer support, each rotor element having an extending rotor portion that extends radially from the outer support toward the axis of rotation.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: September 11, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Richard Freeman Post
  • Patent number: 8207886
    Abstract: A model-based approach to estimating wall positions for a building is developed and tested using simulated data. It borrows two techniques from geophysical inversion problems, layer stripping and stacking, and combines them with a model-based estimation algorithm that minimizes the mean-square error between the predicted signal and the data. The technique is designed to process multiple looks from an ultra wideband radar array. The processed signal is time-gated and each section processed to detect the presence of a wall and estimate its position, thickness, and material parameters. The floor plan of a building is determined by moving the array around the outside of the building. In this paper we describe how the stacking and layer stripping algorithms are combined and show the results from a simple numerical example of three parallel walls.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: June 26, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: David H Chambers, Sean K Lehman, Dennis M Goodman
  • Patent number: 8188841
    Abstract: A new Radio Frequency Identification (RFID), tracking, powering apparatus/system and method using coded Ultra-wideband (UWB) signaling is introduced. The proposed hardware and techniques disclosed herein utilize a plurality of passive UWB transponders in a field of an RFID-radar system. The radar system itself enables multiple passive tags to be remotely powered (activated) at about the same time frame via predetermined frequency UWB pulsed formats. Once such tags are in an activated state, an UWB radar transmits specific “interrogating codes” to put predetermined tags in an awakened status. Such predetermined tags can then communicate by a unique “response code” so as to be detected by an UWB system using radar methods.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: May 29, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Farid U. Dowla, Faranak Nekoogar, David M. Benzel, Gregory E. Dallum, Alex Spiridon
  • Patent number: 8190242
    Abstract: Portable, field-deployable laser synthesizer devices designed for multi-dimensional spectrometry and time-resolved and/or hyperspectral imaging include a coherent light source which simultaneously produces a very broad, energetic, discrete spectrum spanning through or within the ultraviolet, visible, and near infrared wavelengths. The light output is spectrally resolved and each wavelength is delayed with respect to each other. A probe enables light delivery to a target. For multidimensional spectroscopy applications, the probe can collect the resulting emission and deliver this radiation to a time gated spectrometer for temporal and spectral analysis.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: May 29, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Stavros G. Demos, Miroslav Y. Shverdin, Michael D. Shirk
  • Patent number: 8160118
    Abstract: A dual burst transmitter for ultra-wideband (UWB) communication systems generates a pair of precisely spaced RF bursts from a single trigger event. An input trigger pulse produces two oscillator trigger pulses, an initial pulse and a delayed pulse, in a dual trigger generator. The two oscillator trigger pulses drive a gated RF burst (power output) oscillator. A bias driver circuit gates the RF output oscillator on and off and sets the RF burst packet width. The bias driver also level shifts the drive signal to the level that is required for the RF output device.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: April 17, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Gregory E. Dallum, Garth C. Pratt, Peter C. Haugen, James M. Zumstein, Mark L. Vigars, Carlos E. Romero
  • Patent number: 8064065
    Abstract: A new technique for capturing both the amplitude and phase of an optical waveform is presented. This technique can capture signals with many THz of bandwidths in a single shot (e.g., temporal resolution of about 44 fs), or be operated repetitively at a high rate. That is, each temporal window (or frame) is captured single shot, in real time, but the process may be run repeatedly or single-shot. This invention expands upon previous work in temporal imaging by adding heterodyning, which can be self-referenced for improved precision and stability, to convert frequency chirp (the second derivative of phase with respect to time) into a time varying intensity modulation. By also including a variety of possible demultiplexing techniques, this process is scalable to recoding continuous signals.
    Type: Grant
    Filed: June 5, 2010
    Date of Patent: November 22, 2011
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Corey Vincent Bennett
  • Patent number: 8014073
    Abstract: An absorptive coating is in contact with an optical beam splitter such that a signal beam and a reference beam incident on the beam splitter from opposite sides are can be combined to produce two interference beams having a phase difference of about ? 2 .
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: September 6, 2011
    Assignee: Optoplex Corporation
    Inventor: Yung-Chieh Hsieh
  • Patent number: 8009283
    Abstract: Wavefront control techniques are provided for the alignment and performance optimization of optical devices. A Shack-Hartmann wavefront sensor can be used to measure the wavefront distortion and a control system generates feedback error signal to optics inside the device to correct the wavefront. The system can be calibrated with a low-average-power probe laser. An optical element is provided to couple the optical device to a diagnostic/control package in a way that optimizes both the output power of the optical device and the coupling of the probe light into the diagnostics.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: August 30, 2011
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Kai N LaFortune, Randall Hurd, Scott N Fochs, Mark D Rotter, Lloyd Hackel
  • Patent number: 7993266
    Abstract: This invention provides an electronic proximity apparatus and a surveillance method using such an apparatus for alerting individuals that are exposed to a contagious disease. When a person becomes symptomatic and is diagnosed as positive for a given contagious agent, individuals that have recently maintained a threshold proximity with respect to an infected individual are notified and advised to seek immediate medial care. Treatment of individuals in the very early phases of infection (pre-symptomatic) significantly reduces contagiousness of the infected population first exposed to the contagious disease, thus preventing spread of the disease throughout the general population.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: August 9, 2011
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Billy W. Colston, Jr., Fred P. Milanovich, Pedro Estacio, John Chang