公开(公告)号：US5091893A

公开(公告)日：1992-02-25

申请号：US504750

申请日：1990-04-05

申请人： Lowell S. Smith ,  Charles W. Eichelberger ,  Robert J. Wojnarowksi ,  Wiliam P. Kornrumpf ,  Joseph E. Piel, Jr.

发明人： Lowell S. Smith ,  Charles W. Eichelberger ,  Robert J. Wojnarowksi ,  Wiliam P. Kornrumpf ,  Joseph E. Piel, Jr.

IPC分类号： B06B1/06

CPC分类号： B06B1/0629 ,  Y10T29/42

摘要： A piezoelectric ultrasonic array transducer has its individual elements connected to external electronics via a high density interconnect structure which facilitates signal connection and uniformity from array-to-array. The array fabrication process is preferably modified for use with a high density interconnect structure in order to obtain maximum transducer quality.

摘要翻译： 压电超声阵列换能器具有通过高密度互连结构连接到外部电子元件的单独元件，其有助于从阵列到阵列的信号连接和均匀性。 为了获得最大的换能器质量，阵列制造工艺优选地被修改为与高密度互连结构一起使用。

公开(公告)号：US5148962A

公开(公告)日：1992-09-22

申请号：US702551

申请日：1991-05-20

申请人： Marshall G. Jones ,  Jerry T. Harrison ,  Joseph E. Piel, Jr. ,  Lowell S. Smith

发明人： Marshall G. Jones ,  Jerry T. Harrison ,  Joseph E. Piel, Jr. ,  Lowell S. Smith

IPC分类号： H01L21/60 ,  B23K1/005 ,  H05K3/34 ,  H05K3/36 ,  H05K3/40 ,  H05K13/04

CPC分类号： B23K1/0056 ,  H05K13/0465 ,  H05K3/363 ,  H05K2201/0397 ,  H05K2201/10681 ,  H05K2203/0165 ,  H05K2203/107 ,  H05K3/3494 ,  H05K3/403 ,  H05K3/4092

摘要： This invention relates to soldering systems of the type that provide localized soldering through the use of lasers. Such structures of this type generally allow flexible printed circuit boards to be locally soldered to metallized ceramic substrates. These structures have applications in such areas as ultrasound equipment.

公开(公告)号：US4984465A

公开(公告)日：1991-01-15

申请号：US445521

申请日：1989-12-04

申请人： Joseph E. Piel, Jr. ,  Lowell S. Smith

发明人： Joseph E. Piel, Jr. ,  Lowell S. Smith

IPC分类号： G01S7/52

CPC分类号： G01S7/52077

摘要： An ultrasonic imaging system probe with an even-number of transducer elements, has a transformer for coupling the received signal from each transducer to an associated cable. The polling of the transformer primary windings are identical while the polling of the secondary windings of the transformer alternate, i.e. are reversed for all even-numbered channels, with respect to odd-numbered channels. All odd channel outputs are conected to a first signal bus, while all even channel outputs are connected to a second signal bus. The signal busses are connected to inputs of a differential-input amplifier, having an output which provides the sum of all channel transducer outputs, with suppression of any common-mode signal appearing in the system from the channel transformer secondary windings to the differential amplifier inputs.

摘要翻译： 具有偶数个换能器元件的超声波成像系统探头具有用于将来自每个换能器的接收信号耦合到相关电缆的变压器。 变压器初级绕组的轮询是相同的，而变压器次级绕组的轮询相对于奇数号通道交替使用，即针对所有偶数通道反转。 所有奇数通道输出都连接到第一个信号总线，而所有偶数通道输出都连接到第二个信号总线。 信号总线连接到差分输入放大器的输入端，其具有提供所有通道换能器输出之和的输出，同时抑制系统中从通道变压器次级绕组到差分放大器输入端出现的任何共模信号 。

公开(公告)号：US4366406A

公开(公告)日：1982-12-28

申请号：US249286

申请日：1981-03-30

申请人： Lowell S. Smith ,  Axel F. Brisken

发明人： Lowell S. Smith ,  Axel F. Brisken

IPC分类号： A61B8/00 ,  B06B1/06 ,  G01N29/24 ,  G01N29/28 ,  G01S7/521 ,  G10K11/02 ,  H04R1/20 ,  H04R17/00 ,  H01L41/08

CPC分类号： B06B1/0622 ,  G10K11/02

摘要： An ultrasonic transducer has two impedance matching layers bonded to the transducer element which have different thicknesses and are 90.degree.-100.degree. and 35.degree.-55.degree. matching layers. This structure has a high sensitivity comparable to a broadband front surface matched transducer with quarter wavelength (90.degree. and 90.degree.) matching layers, and has primarily a single resonant mode so as to be suitable for relatively narrow band applications.

摘要翻译： 超声波换能器具有两个阻抗匹配层，它们与换能器元件结合，厚度不同，为90°-100°和35°-55°的匹配层。 该结构具有与具有四分之一波长（90°和90°）匹配层的宽带前表面匹配传感器相当的高灵敏度，并且主要具有单个谐振模式，以适用于相对窄带的应用。

公开(公告)号：US5126830A

公开(公告)日：1992-06-30

申请号：US429532

申请日：1989-10-31

申请人： Otward M. Mueller ,  Lowell S. Smith

发明人： Otward M. Mueller ,  Lowell S. Smith

IPC分类号： H01L23/427 ,  H01L23/44

CPC分类号： H01L23/445 ,  H01L2224/48091 ,  H01L2924/1305 ,  H01L2924/13091

摘要： A cryogenic solid-state semiconductor power device, has the actual device chip mounted on a substrate of a material of very high thermal conductivity, which is positioned in a a bath of cryogenic fluid. The substrate may be formed of beryllia, beryllium, alumina, aluminum nitride, diamond and the like materials.

公开(公告)号：US4217684A

公开(公告)日：1980-08-19

申请号：US30299

申请日：1979-04-16

申请人： Axel F. Brisken ,  Lowell S. Smith

发明人： Axel F. Brisken ,  Lowell S. Smith

IPC分类号： B06B1/06 ,  G10K11/02 ,  H01L41/22

CPC分类号： B06B1/0622 ,  G10K11/02 ,  Y10T29/42 ,  Y10T29/49144 ,  Y10T29/49146 ,  Y10T29/49149

摘要： A slab of piezoelectric ceramic plated on all surfaces is bonded to quarter wavelength impedance matching layers of glass and plastic. The top surface of the ceramic is slotted and parallel cuts orthogonal to the slots are made through the ceramic and into the glass to delineate an array of elements each with a signal electrode between slots and a wrap-around ground electrode. After making ground connections and flying lead connections to the signal electrodes, the matching layers are fully cut through from the front. A covering or wear plate is attached to the front surface and a relatively large mass of acoustic damping material covers the backs of the elements.

摘要翻译： 电镀在所有表面上的压电陶瓷板与玻璃和塑料的四分之一波长阻抗匹配层结合。 陶瓷的上表面是开槽的，并且垂直于狭缝的平行切口通过陶瓷制成并进入玻璃中，以描绘每个元件阵列，每个元件在槽和环绕接地电极之间具有信号电极。 在对接信号电极进行接地连接和引线连接之后，匹配层从前面完全切断。 覆盖层或耐磨板附着到前表面，并且相对较大量的声阻尼材料覆盖元件的背面。

公开(公告)号：US5591372A

公开(公告)日：1997-01-07

申请号：US531840

申请日：1995-09-22

申请人： Venkat S. Venkataramani ,  Lowell S. Smith

发明人： Venkat S. Venkataramani ,  Lowell S. Smith

IPC分类号： C04B35/49 ,  H01L41/08 ,  H01L41/18 ,  H01L41/187 ,  H01L41/45 ,  C04B35/00

CPC分类号： H01L41/183 ,  H01L41/1876

摘要： A piezoelectric or electrostrictive composite exhibiting anisotropic 3-3 connectivity with a dense ceramic phase and an infiltrate polymer phase. The ceramic phase is an interconnected ceramic lamelli structure that is arranged substantially parallel in one direction. The ceramic lamelli have greater connectivity in the z direction than in the x and y directions, while the connectivity in the x and y directions are essentially equal.

摘要翻译： 具有与致密陶瓷相和渗透聚合物相的各向异性3-3连接的压电或电致伸缩复合材料。 陶瓷相是在一个方向上基本上平行布置的互连陶瓷片层结构。 陶瓷薄片在z方向上具有比在x和y方向上更大的连接性，而x和y方向上的连接基本相等。

公开(公告)号：US5062429A

公开(公告)日：1991-11-05

申请号：US454581

申请日：1989-12-15

申请人： Lowell S. Smith ,  Edward J. Piel, Jr.

发明人： Lowell S. Smith ,  Edward J. Piel, Jr.

IPC分类号： G01S15/89 ,  G10K11/34

CPC分类号： G01S15/8911 ,  G10K11/341 ,  G01S7/52077

摘要： An ultrasonic imaging system has a probe with an even-numbered plurality of N of transducer elements, with one transducer element being present in each of a like plurality N of signal-processing channels, and with successive ones of the transducers polarized in alternating directions. The transducers require channel excitation drive signals which are either a positive-polarity pulse or a negative-polarity pulse, with signal polarity being dependent upon the polarity of the transducer in the particular channel. The processed outputs of each odd channel is connected directly to an associated input of a coherent summer while the processed output of each even channel is individually amplitude-inverted before connection to an associated summer of input. The summation means output is the sum of all channel transducer outputs, with suppression of any common-mode signal appearing anywhere in the system channels, from the transducer to the summation means inputs.

摘要翻译： 超声波成像系统具有具有偶数个N个换能器元件的探针，其中一个换能器元件存在于相似的多个N个信号处理通道中的每一个中，并且连续的换能器在交替方向上极化。 传感器需要信道激励驱动信号，它们是正极性脉冲或负极性脉冲，信号极性取决于特定通道中的换能器的极性。 每个奇信道的处理输出直接连接到相干夏季的相关输入，而每个偶数通道的处理输出在连接到相关联的输入的夏天之前被单独振幅反转。 求和意味着输出是所有通道传感器输出的总和，抑制从系统通道中任何地方出现的任何共模信号，从传感器到求和单位输入。

公开(公告)号：US4667159A

公开(公告)日：1987-05-19

申请号：US743114

申请日：1985-06-10

申请人： Raymond J. Hodsoll, Jr. ,  Steven G. Karr ,  William M. Leue ,  Lowell S. Smith ,  Rowland W. Redington ,  Paul A. Bottomley ,  William A. Edelstein

发明人： Raymond J. Hodsoll, Jr. ,  Steven G. Karr ,  William M. Leue ,  Lowell S. Smith ,  Rowland W. Redington ,  Paul A. Bottomley ,  William A. Edelstein

IPC分类号： G01R33/565 ,  G01R33/20

CPC分类号： G01R33/565

摘要： Power line interference artifacts in a magnetic resonance image are minimized by the process of: providing a sequential plurality of imaging signal sequences, the totality of which sequences is required for determining the value of each image pixel in an image array thereof; requesting the start of each sequence of the plurality of imaging signal sequences prior to the actual time at which each such signal sequence should commence; preparing a recognition element prior to the desired actual commencement time; recognizing a predetermined occurrence of a repetitive power line signal parameter to provide a first signal; setting the recognition element responsive to the first signal to only then cause the signal sequence start request to actually cause commencement of the associated signal sequence; and causing each signal sequence to occur in essentially an integral number of sequential repetitive cycles of the power line signal waveform to minimize the magnitude of power line frequency signal interference artifacts in the resulting magnetic resonance image.

摘要翻译： 通过以下处理使磁共振图像中的电力线干涉伪影最小化：提供顺序多个成像信号序列，确定其图像阵列中每个图像像素的值所需的序列的总和; 在每个这样的信号序列应该开始的实际时间之前请求开始多个成像信号序列的每个序列; 在所需的实际开始时间之前准备识别元素; 识别重复电力线信号参数的预定出现以提供第一信号; 设置响应于第一信号的识别元件，仅使信号序列开始请求实际上引起相关信号序列的开始; 并且使得每个信号序列在电力线信号波形的基本上整数个顺序的重复周期中发生，以使得到的磁共振图像中的电力线频率信号干扰伪影的大小最小化。

公开(公告)号：US4211949A

公开(公告)日：1980-07-08

申请号：US958655

申请日：1978-11-08

申请人： Axel F. Brisken ,  Lowell S. Smith

发明人： Axel F. Brisken ,  Lowell S. Smith

IPC分类号： G10K11/02 ,  H01L41/10

CPC分类号： G10K11/02

摘要： A linear transducer array for 90.degree. or other wide angle sector scans is covered by a body contacting wear plate made of a material such as filled silicone rubber or polyurethane epoxy in which the longitudinal sound velocity is equal to or less than that in the body and in which the acoustic impedance for longitudinal sound waves is approximately equal to that of the body. Refraction, if it occurs, enhances the field of view without reducing the transmission of acoustic energy. The wear plate provides mechanical support for a fragile front surface matched array.

摘要翻译： 用于90°或其他广角扇形扫描的线性换能器阵列被由诸如填充的硅橡胶或聚氨酯环氧树脂的材料制成的身体接触耐磨板覆盖，其中纵向声速等于或小于身体中的纵向声速， 其中纵向声波的声阻抗近似等于身体的声阻抗。 折射，如果发生，增强视野而不减少声能的传播。 耐磨板为脆弱的前表面匹配阵列提供机械支撑。