公开(公告)号：US07197115B2

公开(公告)日：2007-03-27

申请号：US10710877

申请日：2004-08-10

申请人： Christopher D. Unger ,  Darren L. Hallman ,  Walter Smith ,  James E. Simpson

发明人： Christopher D. Unger ,  Darren L. Hallman ,  Walter Smith ,  James E. Simpson

IPC分类号： H01J35/20

CPC分类号： H01J35/10

摘要： An imaging tube assembly (11) for a computed tomography (CT) system (10) includes an insert (60) that has a vacuum chamber (72). An anode (58) resides within the vacuum chamber (72) and rotates on a shaft (66) via one or more bearing (70). In one embodiment, a seal (52) resides between the insert (60) and the shaft (66). The seal (52) prevents the passage of a gas (80) into the vacuum chamber (72). In another embodiment, a pressure transition chamber (104) is coupled to an insert (60″) and a shaft (66″). The pressure transition chamber (104) has an associated middle fluid pressure that is between an internal fluid pressure of the vacuum chamber (104) and an external fluid pressure of said insert (60″).

摘要翻译： 用于计算机断层摄影（CT）系统（10）的成像管组件（11）包括具有真空室（72）的插入件（60）。 阳极（58）位于真空室（72）内，经由一个或多个轴承（70）在轴（66）上旋转。 在一个实施例中，密封件（52）位于插入件（60）和轴（66）之间。 密封件（52）防止气体（80）进入真空室（72）。 在另一个实施例中，压力过渡室（104）联接到插入件（60“）和轴（66”）。 压力过渡室（104）具有在真空室（104）的内部流体压力和所述插入件（60“）的外部流体压力之间的相关联的中间流体压力。

公开(公告)号：US5910710A

公开(公告)日：1999-06-08

申请号：US754858

申请日：1996-11-22

申请人： James E. Simpson

发明人： James E. Simpson

IPC分类号： H05B41/24 ,  H05B41/16

CPC分类号： H05B41/24

摘要： An electrodeless lamp waveguide structure includes tuned absorbers for spurious RF signals. A lamp waveguide with an integral frequency selective attenuation includes resonant absorbers positioned within the waveguide to absorb spurious out-of-band RF energy. The absorbers have a negligible effect on energy at the selected frequency used to excite plasma in the lamp. In a first embodiment, one or more thin slabs of lossy magnetic material are affixed to the sidewalls of the waveguide at approximately one quarter wavelength of the spurious signal from an end wall of the waveguide. The positioning of the lossy material optimizes absorption of power from the spurious signal. In a second embodiment, one or more thin slabs of lossy magnetic material are used in conjunction with band rejection waveguide filter elements. In a third embodiment, one or more microstrip filter elements are tuned to the frequency of the spurious signal and positioned within the waveguide to couple and absorb the spurious signal's energy. All three embodiments absorb negligible energy at the selected frequency and so do not significantly diminish the energy efficiency of the lamp.

摘要翻译： 无电极灯波导结构包括用于杂散RF信号的调谐吸收器。 具有积分频率选择衰减的灯波导包括位于波导内的共振吸收器，以吸收杂散的带外RF能量。 吸收体在用于激发灯中的等离子体的选定频率处的能量具有可忽略的影响。 在第一实施例中，一个或多个有损磁性材料的薄板被从波导的端壁以大约四分之一波长的杂散信号固定在波导的侧壁上。 有损耗材料的定位优化了来自寄生信号的功率吸收。 在第二实施例中，有损磁性材料的一个或多个薄板与带阻波导滤波器元件结合使用。 在第三实施例中，将一个或多个微带滤波器元件调谐到寄生信号的频率并且定位在波导内以耦合和吸收寄生信号的能量。 所有三个实施例在所选频率处吸收可忽略的能量，因此不会显着降低灯的能量效率。

公开(公告)号：US5448135A

公开(公告)日：1995-09-05

申请号：US141961

申请日：1993-10-28

申请人： James E. Simpson

发明人： James E. Simpson

IPC分类号： H05B41/24 ,  H01J65/04 ,  H01P5/02 ,  H01P5/103

CPC分类号： H01P5/103 ,  H01J65/044

摘要： Apparatus for coupling electromagnetic energy to electrodeless lamps. A waveguide having one end connected to a source of electromagnetic radiation was closed at the second opposite end. A coupling device at the second end couples microwave energy from the waveguide to an electrodeless lamp. The coupling device includes a coaxial transmission line having a center conductor extending through one of the walls of the waveguide adjacent the second end. An alcove partition within the waveguide contacts the extending conductor and forms an alcove in the waveguide. The alcove portion provides for an impedance matching structure between the transmission line and waveguide. The electrodeless lamp which is positioned above the free end of the coaxial transmission line is excited with the coupled microwave energy.

摘要翻译： 用于将电磁能耦合到无电极灯的装置。 具有连接到电磁辐射源的一端的波导在第二相对端处封闭。 第二端的耦合装置将来自波导的微波能量耦合到无电极灯。 耦合装置包括一个同轴传输线，其中心导体延伸穿过邻近第二端的波导的一个壁。 波导内的凹室分隔件与延伸导体接触并在波导中形成壁龛。 凹槽部分提供传输线和波导之间的阻抗匹配结构。 位于同轴传输线自由端上方的无电极灯被耦合的微波能量激发。

公开(公告)号：US5361274A

公开(公告)日：1994-11-01

申请号：US849719

申请日：1992-03-12

申请人： James E. Simpson ,  Mohammed Kamarehi ,  Brian Turner ,  Michael G. Ury

发明人： James E. Simpson ,  Mohammed Kamarehi ,  Brian Turner ,  Michael G. Ury

IPC分类号： H01J65/04 ,  H05B41/24 ,  H05H1/46 ,  H01S3/093

CPC分类号： H05H1/46 ,  H01J65/044

摘要： A microwave powered discharge device which utilizes a TM.sub.NMO cavity. A conductive body is positioned at a null in a discharge device which utilizes a TM.sub.210 cavity to reduce direct coupling from the microwave coupling means, e.g., slot of the cavity. A plurality of TM.sub.110 cavities are ganged together, and a single discharge tube extends through all of the cavities.

摘要翻译： 一种利用TMNMO腔体的微波放电装置。 在使用TM210空腔的放电装置中，导电体位于零点处，以减少来自微波耦合装置（例如腔的槽）的直接耦合。 多个TM110腔体组合在一起，并且单个放电管延伸穿过所有空腔。

公开(公告)号：US4414453A

公开(公告)日：1983-11-08

申请号：US209847

申请日：1980-11-24

申请人： James E. Simpson

发明人： James E. Simpson

IPC分类号： H05B6/72 ,  H05B6/80

CPC分类号： H05B6/725 ,  H05B6/72

摘要： A microwave oven having a directional rotating antenna axially supported on an axis of one wall of a microwave oven cavity of the microwave oven which provides circularly symmetric uniform energy distribution of microwave energy within the microwave oven cavity and consistent heating of a product in the microwave oven cavity. The directional rotating antenna includes a two-by-two array of antenna elements where each element is an end driven half-wavelength resonating antenna element supported by a length of conductor perpendicular to the wall of the microwave oven cavity. A parallel plate transmission line connects to each of the supports, four of which join at a junction which connects to a cylindrical probe antenna. The probe antenna is excited by microwave frequency currents of a waveguide adjacent to the wall of the microwave oven cavity. The directional antenna is rotated by a moving stream of air circulated through the microwave oven cavity. A dome having a flattened conical shape extending outwardly in the wall of the microwave oven cavity provides a nearly circular recess partially surrounding the directional rotating antenna and provides uniform energy distribution in the product being heated. The dome returns microwave energy reflected from the product towards a circular area in the middle area of the microwave oven cavity. A transition section extends between the top of the dome and the one wall of the microwave oven cavity. The waveguide including three sides affixed to the outside wall of the dome, the transition section, and an extension of the wall extending beyond the microwave oven cavity which supports the microwave power source, all of which comprise the fourth wall of the waveguide. The microwave oven provides a consistent cooking pattern, especially for sensitive foods by utilizing high power of the microwave power source.

摘要翻译： 一种微波炉，其具有定向旋转天线，其轴向支撑在微波炉的微波炉腔的一个壁的轴线上，其提供微波炉腔内的微波能量的圆周对称均匀能量分布，并且在微波炉中一致地加热产品 腔。 定向旋转天线包括两乘二阵列的天线元件，其中每个元件是由垂直于微波炉腔的壁的导体长度支撑的端部驱动的半波长谐振天线元件。 平行板传输线连接到每个支撑件，其中四个连接在连接到圆柱形探头天线的连接处。 探头天线由与微波炉腔壁相邻的波导的微波频率电流激发。 定向天线由循环通过微波炉腔的空气流动旋转。 具有在微波炉腔壁的外部向外延伸的扁平圆锥形的圆顶部提供部分围绕定向旋转天线的近似圆形的凹部，并且在被加热的产品中提供均匀的能量分布。 圆顶将产品反射的微波能量返回到微波炉腔中部的圆形区域。 过渡部分在圆顶的顶部和微波炉腔的一个壁之间延伸。 波导包括三个侧面，其固定到圆顶的外壁，过渡部分以及延伸超过支撑微波功率源的微波炉空腔的壁的延伸部分，所有微波功率源都包括波导的第四壁。 微波炉提供了一致的烹饪模式，特别是通过利用微波功率的大功率敏感食品。

公开(公告)号：US06947522B2

公开(公告)日：2005-09-20

申请号：US10248153

申请日：2002-12-20

申请人： Colin Wilson ,  Mark Vermilyea ,  James E. Simpson

发明人： Colin Wilson ,  Mark Vermilyea ,  James E. Simpson

IPC分类号： H01J35/10 ,  H01J35/26

CPC分类号： H01J35/10 ,  H01J2235/086

摘要： An x-ray source with an x-ray source target are provided. The x-ray source includes an electron source. The x-ray source also includes an x-ray transmission window. The x-ray source also includes an x-ray source target located between the electron source and the window, wherein the target is arranged to receive electrons from the electron source to generate x-rays in the x-ray source target, and a rotational mechanism adapted to rotate the x-ray source target. A method of producing x-rays and an x-ray target are also provided.

摘要翻译： 提供具有x射线源目标的X射线源。 x射线源包括电子源。 x射线源还包括x射线透射窗口。 x射线源还包括位于电子源和窗口之间的x射线源靶，其中靶被设置成从电子源接收电子以在x射线源靶中产生x射线，并且旋转 适于旋转x射线源靶的机构。 还提供了一种产生x射线和x射线靶的方法。

公开(公告)号：US06313587B1

公开(公告)日：2001-11-06

申请号：US09434310

申请日：1999-11-05

申请人： Donald A. MacLennan ,  Lauren E. Dymond, Jr. ,  Aleksandr Gitsevich ,  William G. Grimm ,  Kent Kipling ,  Douglas A. Kirkpatrick ,  Samuel A. Ola ,  James E. Simpson ,  William C. Trimble ,  Peter Tsai ,  Brian P. Turner

发明人： Donald A. MacLennan ,  Lauren E. Dymond, Jr. ,  Aleksandr Gitsevich ,  William G. Grimm ,  Kent Kipling ,  Douglas A. Kirkpatrick ,  Samuel A. Ola ,  James E. Simpson ,  William C. Trimble ,  Peter Tsai ,  Brian P. Turner

IPC分类号： H05B4116

CPC分类号： H01J61/125 ,  H01J61/025 ,  H01J61/12 ,  H01J61/52 ,  H01J61/523 ,  H01J65/044 ,  H01J65/048 ,  H05B41/24 ,  Y02B20/22

摘要： A high frequency inductively coupled electrodeless lamp includes an excitation coil with an effective electrical length which is less than one half wavelength of a driving frequency applied thereto, preferably much less. The driving frequency may be greater than 100 MHz and is preferably as high as 915 MHz. Preferably, the excitation coil is configured as a non-helical, semi-cylindrical conductive surface having less than one turn, in the general shape of a wedding ring. At high frequencies, the current in the coil forms two loops which are spaced apart and parallel to each other. Configured appropriately, the coil approximates a Helmholtz configuration. The lamp preferably utilizes an bulb encased in a reflective ceramic cup with a pre-formed aperture defined therethrough. The ceramic cup may include structural features to aid in alignment and I or a flanged face to aid in thermal management. The lamp head is preferably an integrated lamp head comprising a metal matrix composite surrounding an insulating ceramic with the excitation integrally formed on the ceramic. A novel solid-state oscillator preferably provides RF power to the lamp. The oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency. Various control circuits may be employed to adjust the driving frequency of the oscillator.

摘要翻译： 高频电感耦合无电极灯包括具有小于施加到其上的驱动频率的一半波长的有效电长度的励磁线圈，优选地少得多。 驱动频率可以大于100MHz，优选高达915MHz。 优选地，激励线圈被配置为具有小于一圈的非螺旋，半圆柱形导电表面，具有结婚戒指的一般形状。 在高频时，线圈中的电流形成两个彼此间隔开并平行的环。 配置适当，线圈接近亥姆霍兹配置。 灯优选地利用封装在反射陶瓷杯中的灯泡，其中形成有预先形成的孔。 陶瓷杯可以包括有助于对准的结构特征和I或法兰面以辅助热管理。 灯头优选是集成灯头，其包括围绕绝缘陶瓷的金属基体复合体，其中整体形成在陶瓷上的激发。 新颖的固态振荡器优选地向灯提供RF功率。 振荡器是能够以超过70％效率提供超过70瓦功率的单个有源元件器件。 可以采用各种控制电路来调节振荡器的驱动频率。

公开(公告)号：US5786667A

公开(公告)日：1998-07-28

申请号：US694778

申请日：1996-08-09

申请人： James E. Simpson ,  Wayne G. Love

发明人： James E. Simpson ,  Wayne G. Love

IPC分类号： H01J65/04

CPC分类号： H01J65/044

摘要： An apparatus which couples microwave energy to an electrodeless lamp. A source of microwave energy is connected to a wave guide having a slot along one wall thereof. A nominally cylindrical cavity enclosing an electrodeless lamp is closed at one end and coupled at a second end to the slot. The nominally cylindrical cavity has a non cylindrical surface portion which increases coupling from said slot to a second resonant mode which is orthogonal to a first primary resonant mode, creating a high amplitude standing wave in the region of the electrodeless lamp. Once ignition of the lamp occurs, the impedance of the lamp decreases significantly, and most of the microwave power for sustaining illumination is coupled to the electrodeless lamp in the first resonant mode producing a substantially matched load to said microwave source.

摘要翻译： 将微波能量耦合到无电极灯的装置。 微波能量源连接到沿其一个壁具有槽的波导管。 封闭无电极灯的标称圆柱形腔在一端封闭，并在第二端与槽连接。 标称圆柱形腔具有非圆柱形表面部分，其增加了从所述槽到与第一初级谐振模式正交的第二谐振模式的耦合，在无电极灯的区域中产生高振幅驻波。 一旦发生灯的点火，灯的阻抗显着降低，并且用于维持照明的大部分微波功率以第一谐振模式耦合到无电极灯，从而产生与所述微波源的基本匹配的负载。

公开(公告)号：USRE32664E

公开(公告)日：1988-05-10

申请号：US488527

申请日：1983-04-29

申请人： John M. Osepchuk ,  James E. Simpson

发明人： John M. Osepchuk ,  James E. Simpson

IPC分类号： H05B6/76

CPC分类号： H05B6/763

摘要： A high frequency oven having a door sealed to the oven by a seal which prevents the escape of high frequency energy between the door and the oven by acting as a choke to energy attempting to pass across the seal in which excitation of energy modes in a band of frequencies including the desired operating frequency range of the oven is controlled peripherally along the seal. An energy absorbing gasket surrounds the seal to absorb any energy passing outwardly from the energy seal.The questions raised in reexamination request No. 90/000,945, filed Jan. 29, 1986, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e).

公开(公告)号：US4596915A

公开(公告)日：1986-06-24

申请号：US731638

申请日：1985-05-07

申请人： James E. Simpson

发明人： James E. Simpson

IPC分类号： H05B6/72

CPC分类号： H05B6/72

摘要： A circularly polarized microwave oven. Microwave energy is coupled from a waveguide above the ceiling to the cavity by a rotatable vertical probe extending through a circular aperture in the cavity. A strip conductor closely spaced to the ceiling to limit radiation therefrom conducts the microwave current to an air dielectric patch antenna radially offset from the axis of the probe. A vertical section of the strip conductor spaces the patch antenna more than one-eighth wavelength from the ceiling which functions as a ground plane. The patch antenna is rectangular and the dimensions of its sides are selected to be respectively resonant above and below the operating frequency of the oven. More specifically, the dimensions are selected so that the orthogonal currents parallel to the rectangle sides produce orthogonal radiated components that are equal in magnitude and separated by 90.degree. in phase. Accordingly, the resonant patch or flag antenna radiates substantially circular polarization. The probe is supported on a vertical post of a support cradle suspended from the ceiling and the patch antenna is rotated about the axis of the probe.

摘要翻译： 圆极化微波炉。 微波能量通过在空腔中延伸穿过圆形孔的可旋转垂直探头从天花板上方的波导耦合到空腔。 与天花板密切隔开以限制辐射的带状导体将微波电流传导到径向偏离探针轴线的空气介质贴片天线。 带状导体的垂直部分将贴片天线从起到接地平面作用的天花板空间超过八分之一波长。 贴片天线是矩形的，并且其侧面的尺寸被选择为分别在烤箱的工作频率之上和之下谐振。 更具体地说，选择尺寸使得平行于矩形侧的正交电流产生相等的相位并且相位相差90°的正交辐射分量。 因此，谐振贴片或标记天线辐射基本上圆形的极化。 探头支撑在从天花板悬挂的支撑架的垂直柱上，贴片天线围绕探针的轴线旋转。