利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

50 条记录 (耗时 0.031 秒)

    Method of partially introverting a multiple layer tube to form an optical fiber preform
    1.
    发明授权
    Method of partially introverting a multiple layer tube to form an optical fiber preform 失效
    部分内向多层管形成光纤预制件的方法

    公开(公告)号：US5429653A

    公开(公告)日：1995-07-04

    申请号：US961696

    申请日：1993-01-29

    申请人： Helmut Leber ,  Hartwig Schaper ,  Norbert Treber ,  Gerhart Vilsmeier ,  Klaus Reimann

    发明人： Helmut Leber ,  Hartwig Schaper ,  Norbert Treber ,  Gerhart Vilsmeier ,  Klaus Reimann

    IPC分类号： C03B23/047 ,  C03B37/012 ,  C03B23/04 ,  C03B23/11

    CPC分类号： C03B37/01225 ,  C03B23/047 ,  Y02P40/57

    摘要： Starting from a process for producing a rod-like preform, in particular for optical fibers, in which a tubular blank whose refractive index changes, viewed in the radial direction is fed to a heating zone, is softened there, and in the softened state is shaped to give the preform, a method is described for producing preforms which are hyperpure and low in defects, in which the blank used is one whose refractive index decreases, viewed in the radial direction, from the outside inwards, starting from at least one interface which is at a sufficient distance from the outer surface of the blank, of which that part which has been softened in the heating zone is introverted apart from an outer skin, and by which the preform is formed in the longitudinal axis of the tubular blank, counter to the direction in which the latter is fed to the heating zone, and in which the remaining outer skin is drawn off as a rod in the feed direction of the blank.

    摘要翻译： 从制造棒状预成型体的方法，特别是对于光纤而言，其中从径向观察的折射率变化的管状坯料被供给到加热区，在那里软化，并且在软化状态是 形成为预成型件的方法，描述了一种用于制造超纯钛和低缺陷的预成型件的方法，其中使用的坯料是从外部向内从折射率减小的折射率从外部向内从起始于至少一个界面 其与坯料的外表面相距足够的距离，其中已经在加热区中被软化的部分向内伸出外表皮，并且预制件在管坯的纵向轴线上形成， 与后者被供给到加热区的方向相反，并且其中剩余的外皮作为沿着坯料的进给方向的杆被拉出。

    Method for the tool-free reshapingof a tubular body
    2.
    发明授权
    Method for the tool-free reshapingof a tubular body 失效
    用于工具自由修复的管状体的方法

    公开(公告)号：US5171343A

    公开(公告)日：1992-12-15

    申请号：US702244

    申请日：1991-05-17

    申请人： Helmut Leber ,  Klaus Reimann

    发明人： Helmut Leber ,  Klaus Reimann

    IPC分类号： C03B19/00 ,  C03B23/043 ,  C03B23/047 ,  C03B23/057 ,  C03B37/012 ,  C03B37/018 ,  G02B6/00

    CPC分类号： C03B23/047 ,  C03B37/01225 ,  Y02P40/57

    摘要： A process is known for the tool-free reshaping of a tubular hollow body of amorphous, especially vitreous material to a rod by pressure constriction wherein a pressure depression below atmospheric pressure is sustained in the tubular part by continual evacuation during the constriction, while the hollow body is continually fed horizontally, at a given speed of rotation, to a heating zone, and there its viscosity is so lowered that, as a result of the pressure difference between the absolute value of pressure below atmospheric pressure in the hollow body and the external pressure acting on the hollow body, the hollow body becomes constricted to form a rod in the closing zone and the rod is continually pulled from the closing zone at a given rotatory speed; in order by such a process to produce homogeneous, rod-shaped bodies from hollow bodies in a single procedure and at reasonable cost, the outside dimensions and inside dimensions of the hollow body, the viscosity of the vitreous material in the closing zone, the pressure difference between the absolute value of pressure below atmospheric pressure in the hollow body and the external pressure, the level of the pressure constriction, the rate of withdrawal of the rod and the rate of feed of the hollow body, as well as the rotatory speeds of the rod and hollow body, are selected such that a spur of smaller cross-sectional dimensions than those of the rod is formed in the axis of the hollow body from the closing zone in a direction contrary to the direction of withdrawal of the rod.

    摘要翻译： 已知一种方法是通过压力收缩将无定形的，特别是玻璃质材料的管状中空体重新成形为棒状，其中通过在收缩期间连续抽真空而在管状部分内维持低于大气压的压力下降，而中空 身体以给定的旋转速度被水平地连续供给到加热区域，并且其粘度如此降低，由于中空体中压力低于大气压力的绝对值与外部空气体之间的压力差 作用在中空体上的压力，中空体变得收缩，以在闭合区域中形成杆，并且以给定的旋转速度从闭合区域连续地拉动杆; 为了通过这样的方法，以单一程序并以合理的成本从空心体产生均匀的棒状体，中空体的外部尺寸和内部尺寸，关闭区域中玻璃质材料的粘度，压力 中空体内的压力绝对值低于大气压力与外部压力之间的差异，压力收缩水平，棒材退出速率和中空体的进给速度以及旋转速度 所述杆和中空体被选择成使得与所述杆的截面尺寸相比较小的横截面尺寸的突出部在与所述杆的拉出方向相反的方向上从所述封闭区域在所述中空体的轴线上形成。

    Process for the purification of granular silicon dioxide
    3.
    发明授权
    Process for the purification of granular silicon dioxide 失效
    粒状二氧化硅的净化工艺

    公开(公告)号：US4956059A

    公开(公告)日：1990-09-11

    申请号：US410581

    申请日：1989-09-21

    申请人： Wolfgang Englisch ,  Helmut Leber ,  Klaus Reimann ,  Fritz Simmat

    发明人： Wolfgang Englisch ,  Helmut Leber ,  Klaus Reimann ,  Fritz Simmat

    IPC分类号： B01J19/08 ,  B01J19/28 ,  C01B33/18 ,  C03C1/02

    CPC分类号： B01J19/28 ,  B01J19/087 ,  C01B33/18 ,  C03C1/022 ,  B01J2208/00407 ,  B01J2219/182 ,  C01P2004/50 ,  C01P2006/80

    摘要： Granular silicon dioxide is placed in a treatment chamber which is heated to a temperature ranging from 700.degree. to 1300.degree. C. The chamber is then rotated for a prescribed period of time to mix the grains while a gaseous atmosphere of chlorine and/or hydrogen chloride is passed through the treatment chamber. The mixing period is followed by a resting period which is at least ten times longer than the mixing time. During the resting period the grains are exposed to a constant electric field having a strength of 600 to 1350 V/cm applied across the chamber. The foregoing cycle is repeated several times. For working the process a device is used which includes a quartz glass rotary tube into which hollow silicon carbide electrodes extend.

    摘要翻译： 将颗粒状二氧化硅放置在加热至700℃至1300℃的处理室中。然后将该室旋转规定的时间以混合谷物，同时在气体的氯气和/或氯化氢气氛 通过处理室。 混合时间之后是静止期，其比混合时间长至少十倍。 在静止期间，晶粒暴露于贯穿腔室的强度为600至1350V / cm的恒定电场。 上述循环重复几次。 对于工作过程，使用包括中空碳化硅电极延伸的石英玻璃旋转管的装置。

    RF Device and Method for Tuning an RF Device
    4.
    发明申请
    RF Device and Method for Tuning an RF Device 有权
    用于调谐RF设备的RF设备和方法

    公开(公告)号：US20130335168A1

    公开(公告)日：2013-12-19

    申请号：US13996853

    申请日：2010-12-23

    申请人： Zidong Liu ,  Klaus Reimann ,  Kevin R. Boyle ,  Maurice de Jongh ,  Jeroen Bielen

    发明人： Zidong Liu ,  Klaus Reimann ,  Kevin R. Boyle ,  Maurice de Jongh ,  Jeroen Bielen

    IPC分类号： H03H7/01

    CPC分类号： H03H7/0161 ,  H01G5/014 ,  H01G5/019

    摘要： An RF device includes a substrate and a series circuit of a tunable RF component and a DC blocking capacitor. The series circuit is arranged on the substrate and couples an RF signal terminal to a fixed voltage terminal that is electrically isolated from the RF signal terminal. The tunable RF component is coupled to the RF signal terminal, the DC blocking capacitor is coupled to the fixed voltage terminal and a driver terminal is coupled to the tunable RF component.

    摘要翻译： RF器件包括基底和可调RF元件和隔直流电容器的串联电路。 串联电路布置在基板上，并将RF信号端子耦合到与RF信号端子电隔离的固定电压端子。 可调RF分量耦合到RF信号端，隔直流电容器耦合到固定电压端，驱动端耦合到可调谐RF组件。

    MEMS SWITCHING CIRCUIT
    5.
    发明申请
    MEMS SWITCHING CIRCUIT 审中-公开
    MEMS开关电路

    公开(公告)号：US20120286588A1

    公开(公告)日：2012-11-15

    申请号：US13105675

    申请日：2011-05-11

    申请人： Peter Steeneken ,  Olaf Wunnicke ,  Klaus Reimann ,  James Raymond Spehar ,  Michael Joehren ,  Gerrit Willem den Besten

    发明人： Peter Steeneken ,  Olaf Wunnicke ,  Klaus Reimann ,  James Raymond Spehar ,  Michael Joehren ,  Gerrit Willem den Besten

    IPC分类号： H01H9/00

    CPC分类号： H01H59/0009 ,  Y10T307/76

    摘要： A switching circuit employs MEMS devices. In connection with various example embodiments, signal switching circuit couples primary and secondary data link connectors having at least two channels and an electrode for each channel. A MEMS switch is coupled to each channel in of the secondary data link connectors, and includes a suspended membrane, first and second contact electrodes (one being in the membrane) and a biasing circuit that biases the membrane for moving the membrane between open and closed positions to contact the electrodes. A switch controller circuit selectively controls the application of an actuation voltage to each of the biasing circuits, thereby selectively actuating the membranes between the open and closed positions for routing signals between the primary and secondary data link connectors.

    摘要翻译： 开关电路采用MEMS器件。 结合各种示例实施例，信号切换电路耦合具有至少两个通道的主数据链路连接器和辅助数据链路连接器以及用于每个通道的电极。 MEMS开关耦合到次级数据链路连接器中的每个通道，并且包括悬浮的膜，第一和第二接触电极（一个位于膜中）和偏置电路，偏置电路偏压膜以使膜在打开和关闭之间移动 与电极接触的位置。 开关控制器电路选择性地控制对每个偏置电路的致动电压的施加，从而在打开和关闭位置之间选择性地启动膜以在主数据链路连接器和辅助数据链路连接器之间路由信号。

    CMUTs with a high-k dielectric
    6.
    发明授权
    CMUTs with a high-k dielectric 有权
    具有高k电介质的CMUT

    公开(公告)号：US08203912B2

    公开(公告)日：2012-06-19

    申请号：US12671108

    申请日：2008-07-31

    申请人： Aarnoud Laurens Roest ,  Klaus Reimann ,  Mareike Klee ,  Jozef Thomas Martinus van Beek ,  John Douglas Fraser

    发明人： Aarnoud Laurens Roest ,  Klaus Reimann ,  Mareike Klee ,  Jozef Thomas Martinus van Beek ,  John Douglas Fraser

    IPC分类号： H04R19/00 ,  H04R17/00

    CPC分类号： B06B1/0292

    摘要： A capacitive ultrasound transducer includes a first electrode, a second electrode, and a third electrode, the third electrode including a central region disposed in collapsibly spaced relation with the first electrode, and a peripheral region disposed outward of the central region and disposed in collapsibly spaced relation with the second electrode. The transducer further includes a layer of a high dielectric constant material disposed between the third electrode and the first electrode, and between the third electrode and the second electrode. The transducer may be operable in a collapsed mode wherein the peripheral region of the third electrode oscillates relative to the second electrode, and the central region of the third electrode is fully collapsed with respect to the first electrode such that the dielectric layer is sandwiched therebetween. Piezoelectric actuation, such as d31 and d33 mode piezoelectric actuation, may further be included. A medical imaging system includes an array of such capacitive ultrasound transducers disposed on a common substrate.

    摘要翻译： 电容式超声波换能器包括第一电极，第二电极和第三电极，所述第三电极包括与所述第一电极以可折叠间隔开的关系设置的中心区域，以及设置在所述中心区域外侧的周边区域， 与第二电极的关系。 换能器还包括设置在第三电极和第一电极之间以及第三电极和第二电极之间的高介电常数材料层。 换能器可以以折叠模式操作，其中第三电极的周边区域相对于第二电极振荡，并且第三电极的中心区域相对于第一电极完全折叠，使得介电层夹在其间。 可以进一步包括诸如d31和d33模式压电致动的压电致动。 医疗成像系统包括设置在公共基底上的这种电容式超声换能器阵列。

    TUNABLE CAPACITOR
    8.
    发明申请
    TUNABLE CAPACITOR 有权
    TUNABLE电容器

    公开(公告)号：US20110051309A1

    公开(公告)日：2011-03-03

    申请号：US12990044

    申请日：2009-04-29

    申请人： Yukiko Furukawa ,  Klaus Reimann ,  Friso Jacobus Jedema ,  Markus Petrus Josephus Tiggleman ,  Aarnoud Laurens Roest

    发明人： Yukiko Furukawa ,  Klaus Reimann ,  Friso Jacobus Jedema ,  Markus Petrus Josephus Tiggleman ,  Aarnoud Laurens Roest

    IPC分类号： H01G7/04

    CPC分类号： H01G7/04

    摘要： The invention relates to electronic device having an operation temperature range, wherein the electronic device comprises a tunable capacitor (CST) comprising a first electrode (BE), a second electrode (TE), and a dielectric (FEL) arranged between the first electrode (BE) and the second electrode (TE). The dielectric (FEL) comprises dielectric material (FEL) having a value of a relative dielectric constant (εr) varying at least within the operation temperature range. The electronic device further comprises a temperature varying means (RES) being thermally coupled to the tunable capacitor for providing a temperature of the dielectric (FEL) causing a predetermined capacitance of the tunable capacitor (CST). The invention, which relies on the idea of varying temperature to vary a capacitance of a capacitor stack, provides an alternative tunable capacitor type for the known types. Advantageous embodiments feature high-tuning ratio, small device area, and stable capacitance value in case the temperature is well controlled. The invention further relates to a semiconductor device comprising the electronic device in accordance with the invention, to an electronic circuit comprising such electronic device, and to a method of manufacturing such electronic device.

    摘要翻译： 本发明涉及具有操作温度范围的电子设备，其中电子设备包括可调谐电容器（CST），该可调谐电容器（CST）包括第一电极（BE），第二电极（TE）和电介质（FEL） BE）和第二电极（TE）。 电介质（FEL）包括具有至少在操作温度范围内变化的相对介电常数值（＆amp; r）的电介质材料（FEL）。 电子设备还包括热耦合到可调电容器的温度变化装置（RES），用于提供导致可调谐电容器（CST）的预定电容的电介质的温度（FEL）。 依靠改变温度来改变电容器堆叠的电容的想法的本发明为已知类型提供了替代的可调谐电容器类型。 有利的实施例在温度受到良好控制的情况下具有高调节率，小的器件面积和稳定的电容值。 本发明还涉及包括根据本发明的电子设备的半导体器件，包括这种电子器件的电子电路以及制造这种电子器件的方法。

    CMUTS WITH A HIGH-K DIELECTRIC
    10.
    发明申请
    CMUTS WITH A HIGH-K DIELECTRIC 有权
    具有高K电介质的CMUTS

    公开(公告)号：US20100202254A1

    公开(公告)日：2010-08-12

    申请号：US12671108

    申请日：2008-07-31

    申请人： Aarnoud Laurens Roest ,  Klaus Reimann ,  Mareike Klee ,  Jozef Thomas Martinus Van Beek ,  John Douglas Fraser

    发明人： Aarnoud Laurens Roest ,  Klaus Reimann ,  Mareike Klee ,  Jozef Thomas Martinus Van Beek ,  John Douglas Fraser

    IPC分类号： B06B1/06

    CPC分类号： B06B1/0292

    摘要： A capacitive ultrasound transducer includes a first electrode, a second electrode, and a third electrode, the third electrode including a central region disposed in collapsibly spaced relation with the first electrode, and a peripheral region disposed outward of the central region and disposed in collapsibly spaced relation with the second electrode. The transducer further includes a layer of a high dielectric constant material disposed between the third electrode and the first electrode, and between the third electrode and the second electrode. The transducer may be operable in a collapsed mode wherein the peripheral region of the third electrode oscillates relative to the second electrode, and the central region of the third electrode is fully collapsed with respect to the first electrode such that the dielectric layer is sandwiched therebetween. Piezoelectric actuation, such as d31 and d33 mode piezoelectric actuation, may further be included. A medical imaging system includes an array of such capacitive ultrasound transducers disposed on a common substrate.

    摘要翻译： 电容式超声波换能器包括第一电极，第二电极和第三电极，所述第三电极包括与所述第一电极以可折叠间隔开的关系设置的中心区域，以及设置在所述中心区域外侧的周边区域， 与第二电极的关系。 换能器还包括设置在第三电极和第一电极之间以及第三电极和第二电极之间的高介电常数材料层。 换能器可以以折叠模式操作，其中第三电极的周边区域相对于第二电极振荡，并且第三电极的中心区域相对于第一电极完全折叠，使得介电层夹在其间。 可以进一步包括诸如d31和d33模式压电致动的压电致动。 医疗成像系统包括设置在公共基底上的这种电容式超声换能器阵列。