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    • 22. 发明授权
    • Technique for quasi-phase matching
    • 准相位匹配技术
    • US06710912B1
    • 2004-03-23
    • US10326124
    • 2002-12-23
    • Robert John FilkinsPeter William Lorraine
    • Robert John FilkinsPeter William Lorraine
    • G02F1355
    • G02F1/3775G02F2001/3548G02F2202/32
    • A technique for achieving quasi phase matching in a photonic band gap structure comprising a first material and a second material is disclosed. In one particular exemplary embodiment, the technique may be realized by calculating a coherence length of an optical interaction of interest involving at least a first frequency and a second frequency; calculating a first lattice constant of the first material to achieve a predetermined first group velocity for a fundamental optical frequency; calculating a second lattice constant of the second material so that a second group velocity of a second optical frequency is substantially the same as the first group velocity associated with the fundamental optical frequency of the first material; determining a photonic band gap arrangement for achieving quasi phase matching in the photonic band gap structure; and implementing the first lattice constant of the first material and the second lattice constant of the second material in accordance with the photonic band gap arrangement to achieve quasi phase matching in the photonic band gap structure.
    • 公开了一种在包括第一材料和第二材料的光子带隙结构中实现准相位匹配的技术。 在一个特定示例性实施例中,可以通过计算涉及至少第一频率和第二频率的感兴趣的光学相互作用的相干长度来实现该技术; 计算第一材料的第一晶格常数以实现基本光频率的预定的第一组速度; 计算第二材料的第二晶格常数,使得第二光频率的第二组速度与与第一材料的基本光频率相关联的第一组速度基本相同; 确定用于实现光子带隙结构中的准相位匹配的光子带隙布置; 并且根据光子带隙布置实现第一材料的第一晶格常数和第二材料的第二晶格常数,以实现光子带隙结构中的准相位匹配。
    • 23. 发明授权
    • Ultrasonic phased array transducer with an ultralow impedance backfill
and a method for making
    • 具有超低阻抗回填的超声相控阵变换器和制造方法
    • US6087761A
    • 2000-07-11
    • US157295
    • 1998-09-18
    • Peter William LorraineLowell Scott Smith
    • Peter William LorraineLowell Scott Smith
    • B06B1/06G10K11/00H01L41/18
    • G10K11/002B06B1/0622B06B1/0629Y10T29/42Y10T29/49005Y10T29/49007Y10T29/4908Y10T29/49155Y10T29/49165Y10T29/49792
    • The present invention discloses an ultrasonic phased array transducer with an ultralow backfill and a method for making. The ultrasonic phased array includes a low density backfill material having an ultralow acoustic impedance. The backfill material is either an aerogel, a carbon aerogel, an xerogel, or a carbon xerogel. A piezoelectric ceramic material and two matching layers are bonded to the backfill material. In one embodiment, a plurality of interconnect vias are formed in the backfill material with conducting material deposited in the vias. A portion of the bonded matching layers, the piezoelectric ceramic material, and the backfill material have isolation cuts therethrough to form an array of electrically and acoustically isolated individual elements. In a second embodiment, the backfill material is bonded to an electronic layer at a face opposite to the piezoelectric ceramic material and the matching layers. Then isolation cuts are made through the matching layers, the piezoelectric ceramic material, and the backfill material, to form an array of electrically and acoustically isolated individual elements.
    • 本发明公开了一种具有超低回填的超声波相控阵变换器及其制造方法。 超声相控阵列包括具有超低声阻抗的低密度回填材料。 回填材料是气凝胶,碳气凝胶,干凝胶或碳干凝胶。 将压电陶瓷材料和两个匹配层结合到回填材料上。 在一个实施例中,在回填材料中形成多个互连通孔,导电材料沉积在通孔中。 粘合匹配层,压电陶瓷材料和回填材料的一部分具有穿过其的隔离切口,以形成电隔离和声隔离的各个元件阵列。 在第二实施例中,回填材料在与压电陶瓷材料和匹配层相对的面处结合到电子层。 然后通过匹配层,压电陶瓷材料和回填材料进行隔离切割,以形成电隔离和声隔离的各个元件的阵列。
    • 24. 发明授权
    • Utrasound imaging system architecture employing switched transducer
elements
    • 使用切换换能器元件的超声成像系统架构
    • US5832923A
    • 1998-11-10
    • US763772
    • 1996-12-11
    • William Ernest EngelerPeter William LorraineJohn Thomas Pedicone
    • William Ernest EngelerPeter William LorraineJohn Thomas Pedicone
    • G01N29/24A61B8/00G01S7/52G01S7/521G01S15/89G03B42/06
    • G01S15/8925G01S15/8927G01S7/52046G03B42/06G01S7/52079
    • An ultrasonic imaging system which uses transform beamforming in a two-dimensional context includes a two-dimensional array of transducer elements, a plurality of groups of local busses, and a plurality of sets of switching circuits. Each transducer element has a signal electrode coupled to a corresponding set of switching circuits which is controlled so that a particular transducer element is selectively coupled to one of the associated group of local busses. Each local bus provides an output signal that is sent from the probe to the console via a respective coaxial cable for each group of local busses. The number of connections that are necessary to be made through each coaxial cable is reduced by the ratio of the number of transducer elements coupled to a set of local busses and the number of busses in that set. Each set of local busses provides the input transform signals to one transform section of the transform preprocessor. A control signal stored in memory determines which local bus each transducer is operatively connected to. The code pattern of the memory therefore specifies the patterns of the transducer element connections to the coaxial cables.
    • 在二维上下文中使用变换波束形成的超声波成像系统包括换能器元件的二维阵列,多组局部总线和多组开关电路。 每个换能器元件具有耦合到对应的一组开关电路的信号电极,其被控制以使得特定换能器元件选择性地耦合到相关联的一组本地总线中的一个。 每个本地总线提供输出信号,该信号通过针对每组本地总线的相应同轴电缆从探头发送到控制台。 通过每根同轴电缆所需要的连接数量减少了耦合到一组局部总线的换能器元件的数量和该组中的总线数量的比率。 每组本地总线将输入变换信号提供给变换预处理器的一个变换部分。 存储在存储器中的控制信号确定每个换能器可操作地连接到哪个局部总线。 因此,存储器的代码模式指定了与同轴电缆的传感器元件连接的图案。
    • 26. 发明授权
    • Ultrasonic phased array transducer with an ultralow impedance backfill
and a method for making
    • 具有超低阻抗回填的超声相控阵变换器和制造方法
    • US5655538A
    • 1997-08-12
    • US491208
    • 1995-06-19
    • Peter William LorraineLowell Scott Smith
    • Peter William LorraineLowell Scott Smith
    • B06B1/06G10K11/00A61B8/00H01L41/22
    • G10K11/002B06B1/0622B06B1/0629Y10T29/42Y10T29/49005Y10T29/49007Y10T29/4908Y10T29/49155Y10T29/49165Y10T29/49792
    • The present invention discloses an ultrasonic phased array transducer with an ultralow backfill and a method for making. The ultrasonic phased array includes a low density backfill material having an ultralow acoustic impedance. The backfill material is either an aerogel, a carbon aerogel, an xerogel, or a carbon xerogel. A piezoelectric ceramic material and two matching layers are bonded to the backfill material. In one embodiment, a plurality of interconnect vias are formed in the backfill material with conducting material deposited in the vias. A portion of the bonded matching layers, the piezoelectric ceramic material, and the backfill material have isolation cuts therethrough to form an array of electrically and acoustically isolated individual elements. In a second embodiment, the backfill material is bonded to an electronic layer at a face opposite to the piezoelectric ceramic material and the matching layers. Then isolation cuts are made through the matching layers, the piezoelectric ceramic material, and the backfill material, to form an array of electrically and acoustically isolated individual elements.
    • 本发明公开了一种具有超低回填的超声波相控阵变换器及其制造方法。 超声相控阵列包括具有超低声阻抗的低密度回填材料。 回填材料是气凝胶,碳气凝胶,干凝胶或碳干凝胶。 将压电陶瓷材料和两个匹配层结合到回填材料上。 在一个实施例中,在回填材料中形成多个互连通孔,导电材料沉积在通孔中。 粘合匹配层,压电陶瓷材料和回填材料的一部分具有穿过其的隔离切口,以形成电隔离和声隔离的各个元件阵列。 在第二实施例中,回填材料在与压电陶瓷材料和匹配层相对的面处结合到电子层。 然后通过匹配层,压电陶瓷材料和回填材料进行隔离切割,以形成电隔离和声隔离的各个元件的阵列。
    • 28. 发明授权
    • Method for detection of defects in anisotropic materials
    • 检测各向异性材料缺陷的方法
    • US07150193B2
    • 2006-12-19
    • US10747739
    • 2003-12-29
    • Peter William LorraineRonald Alan Kline
    • Peter William LorraineRonald Alan Kline
    • G01N29/18
    • G01S15/8997G01N29/043G01N29/069G01N29/07G01N29/4463G01N2291/0231G01N2291/02854G01N2291/0289G01N2291/0421G01N2291/0422
    • Disclosed herein is a method for imaging anisotropic media comprising selecting multiple points within the anisotropic media, which is to be imaged; determining an acoustic path between each selected point in the anisotropic media and a receiver position on the surface of the anisotropic media; calculating an acoustic wave velocity at all necessary points; determining an acoustic path length based on each selected point in the anisotropic media and the receiver position; determining a time delay for each acoustic wave between each image point and the receiver position on the surface of the anisotropic media; calculating a sum for each point selected based on the appropriate acoustic wave velocities and the acoustic path lengths; and generating an image of the anisotropic media using the coherent sums generated for each said image point selected.
    • 本文公开了一种用于成像各向异性介质的方法,包括选择要成像的各向异性介质内的多个点; 确定各向异性介质中的每个选定点和各向异性介质表面上的接收器位置之间的声学​​路径; 计算所有必要点的声波速度; 基于各向异性介质中的每个选定点和接收器位置确定声学路径长度; 确定每个图像点与各向异性介质表面上的接收器位置之间的每个声波的时间延迟; 基于适当的声波速度和声学路径长度计算所选择的每个点的和; 以及使用为所选择的每个所述图像点生成的相干和生成各向异性介质的图像。