-
公开(公告)号：US20090161831A1
公开(公告)日：2009-06-25
申请号：US12391656
申请日：2009-02-24
Applicant: Yuichi Ito , Toru Moriike , Seiji Hosoya , Yoshihiko Dan , Makoto Otsuka
Inventor： Yuichi Ito , Toru Moriike , Seiji Hosoya , Yoshihiko Dan , Makoto Otsuka
CPC classification number: H01J35/06 , H01J9/26 , H01J35/16 , H01J35/32 , H01J2235/023 , H01J2235/06 , H01J2235/087 , H01J2235/16 , H01J2235/186
Abstract: A transmission type X-ray tube includes an electrode lead (4) holding a cathode filament (7) and a stem unit (1) to which a sealing member (5), an exhaust tube (2), and the like are attached by brazing, and an irradiation window frame (8) having an X-ray irradiation window (9) attached by brazing. The other end side (52) of the sealing member (5) is attached to an open end (83) of the irradiation window frame (8) by welding. Thus, it is possible to obtain a high-quality transmission type X-ray tube having a long service life at a low cost.
Abstract translation: 透射型X射线管包括：保持阴极丝（7）的电极引线（4）和通过密封部件（5），排气管（2）等附着在其上的杆单元（1） 钎焊和具有通过钎焊附着的X射线照射窗（9）的照射窗框（8）。 密封构件（5）的另一端（52）通过焊接附接到照射窗框架（8）的开口端（83）。 因此，可以以低成本获得具有长使用寿命的高质量透射型X射线管。
-
公开(公告)号：US07515686B2
公开(公告)日：2009-04-07
申请号：US11800394
申请日：2007-05-05
Applicant: Randol E. Kirk
Inventor： Randol E. Kirk
IPC: G21K5/10
CPC classification number: H01J35/06 , G21K5/08 , G21K5/10 , H01J35/08 , H01J35/14 , H01J35/16 , H01J2235/06 , H01J2235/086 , H01J2235/087 , H01J2235/163
Abstract: An apparatus and method for providing uniform X-Ray irradiation to material carried in a plurality of containers. The apparatus includes an X-Ray tube providing a linear source of irradiation and also a 4 pi (360 degrees) irradiation. The material to be irradiated is placed in containers suspended on a vertical carousel wheel type structure. The individual containers are mounted receive irradiation throughout the rotation of the wheel. The tube is mounted approximately at the axis or center of the wheel. In operation, the containers of material are rotated around the tube, and due to their orientation and the 4 pi irradiation from the source, each and all the containers receive a uniform irradiation for the material contained therein.
Abstract translation: 一种用于对携带在多个容器中的材料提供均匀的X射线照射的装置和方法。 该装置包括提供线性照射源的X射线管以及4π（360度）照射。 待照射的材料放置在悬挂在垂直转盘轮型结构上的容器中。 各个容器安装在车轮旋转的过程中受到照射。 管大致安装在车轮的轴线或中心处。 在操作中，材料容器围绕管旋转，并且由于它们的取向和来自源的4Pi照射，每个和所有容器对于其中所含的材料均受到均匀的照射。
-
公开(公告)号：US20080238296A1
公开(公告)日：2008-10-02
申请号：US12042022
申请日：2008-03-04
Applicant: Yutaka Nakai , Tomio Ono , Tadashi Sakai
Inventor： Yutaka Nakai , Tomio Ono , Tadashi Sakai
CPC classification number: H01J17/04 , H01J17/49 , H01J35/06 , H01J2235/06
Abstract: An electron-emitting device includes a first electrode; an insulating film that is disposed on the first electrode, includes at least one step in an upper surface thereof, and includes a first surface on a lower step portion of the step and a second surface on an upper step portion of the step; a second electrode that is disposed on the first surface at a distance apart from the step; and a third electrode that is disposed on the second surface at a distance apart from the step.
Abstract translation: 电子发射器件包括第一电极; 设置在所述第一电极上的绝缘膜包括在其上表面中的至少一个台阶，并且包括所述台阶的下台阶部分上的第一表面和所述台阶的上台阶部分上的第二表面; 第二电极，其设置在与所述台阶相距一定距离的所述第一表面上; 以及第三电极，其设置在距离台阶一定距离的第二表面上。
-
公开(公告)号：US07085351B2
公开(公告)日：2006-08-01
申请号：US10358160
申请日：2003-02-05
Applicant: Jianping Lu , Otto Zhou , Yuan Cheng
Inventor： Jianping Lu , Otto Zhou , Yuan Cheng
IPC: H01J35/32
CPC classification number: H01J35/06 , A61B6/032 , A61B6/4021 , A61B6/4028 , A61B6/405 , A61B6/4488 , A61B6/482 , B82Y10/00 , H01J3/021 , H01J35/065 , H01J35/08 , H01J35/105 , H01J35/14 , H01J35/22 , H01J35/28 , H01J35/30 , H01J2201/30469 , H01J2235/06 , H01J2235/062 , H01J2235/064 , H01J2235/068 , H05G1/34
Abstract: An x-ray generating device includes a field emission cathode formed at least partially from a nanostructure-containing material having an emitted electron current density of at least 4 A/cm2. High energy conversion efficiency and compact design are achieved due to easy focusing of cold cathode emitted electrons and dramatic reduction of heating at the anode. In addition, by pulsing the field between the cathode and the gate or anode and focusing the electron beams at different anode materials, pulsed x-ray radiation with varying energy can be generated from a single device. Methods and apparatus for independent control of electron emission current and x-ray energy in x-ray tubes are also provided. The independent control can be accomplished by adjusting the distance between the cathode and anode. The independent control can also be accomplished by adjusting the temperature of the cathode. The independent control can also be accomplished by optical excitation of the cathode. The cathode can include field emissive materials such as carbon nanotubes.
-
公开(公告)号：US06229876B1
公开(公告)日：2001-05-08
申请号：US09363777
申请日：1999-07-29
Applicant: Richard S. Enck , Richard G. Johnson
Inventor： Richard S. Enck , Richard G. Johnson
IPC: H01J3506
CPC classification number: H01J3/027 , H01J35/14 , H01J2235/06
Abstract: An x-ray tube comprising an electron gun assembly having an electron gun container housing an electron generator for generating electrons in a first direction along a first axis. The beam of electrons impinges upon an anode which emits x-rays in response to the beam of electrons. The gun container is characterized by having a discharge end comprising a solid spherical shape.
Abstract translation: 一种包括电子枪组件的X射线管，该电子枪组件具有容纳用于沿着第一轴沿第一方向产生电子的电子发生器的电子枪容器。 电子束撞击在响应于电子束发射x射线的阳极上。 枪容器的特征在于具有包括实心球形的排出端。
-
Patent Agency Ranking
76.发明公开公开(公告)号：US20240136142A1
公开(公告)日：2024-04-25
申请号：US18070197
申请日：2022-11-28
Applicant: AweXome Ray, Inc.
Inventor： Hong Soo CHOI , Young Bae KIM , Hyeongu CHO , Namkyu LEE , Keunsoo JEONG , Se Hoon GIHM , Jiwon CHOI
CPC classification number: H01J35/065 , H01J1/304 , H01J35/08 , H01J35/14 , H01J2201/30469 , H01J2235/06
Abstract: An emitter, a field emission assembly, and an electromagnetic wave generator are provided, and the emitter is an emitter for emitting electrons in an electromagnetic wave generator and is in the form of a sheet in which a plurality of yarns including carbon nanotube (CNT) fibers are weaved.
-
公开(公告)号：US20180053622A1
公开(公告)日：2018-02-22
申请号：US15679330
申请日：2017-08-17
Applicant: SIEMENS HEALTHCARE GMBH
Inventor： ANJA FRITZLER
CPC classification number: H01J35/105 , A61B6/40 , H01J35/06 , H01J35/065 , H01J35/14 , H01J2235/06 , H05G1/10
Abstract: A thermionic emission device includes an indirectly heatable main emitter with a main emission surface and a connectible heat emitter with a heat emission surface. The heat emission surface is disposed at a predefinable distance from the main emission surface. In the operating state, the main emitter is at a constant main potential and the heat emitter can be switched between at least two heating potentials which differ from one another and which differ from the main potential. Through the use of the thermionic emission device, the radiation load for a patient is reduced in the case of dose-modulated x-ray recordings.
-
公开(公告)号：US20170345611A1
公开(公告)日：2017-11-30
申请号：US15538431
申请日：2015-12-18
Applicant: SIEMENS AKTIENGESELLSCHAFT
Inventor： Oliver Heid
CPC classification number: H01J35/065 , H01J35/02 , H01J35/12 , H01J2235/06 , H01J2235/062 , H01J2235/082 , H01J2235/086
Abstract: The invention relates to a metal jet x-ray tube which is less affected by the problem of the power density at the point of impact of the electron beam on the anode component than conventional tubes. For this purpose the metal jet x-ray tube has a metal jet (6) as anode component (7), which metal jet is so thin that an electron beam (4) impinging on the metal jet (6) is only partially decelerated by the metal jet. Furthermore a blade cathode is provided as a cathode component (3), which blade cathode comprises a cathode blade (10) directed with a slight inclination downwards in the direction of the liquid metal jet (6) of the anode component (7).
-
公开(公告)号：US09793084B2
公开(公告)日：2017-10-17
申请号：US13232166
申请日：2011-09-14
Applicant: Jani Reijonen , Joel Lee Groves
Inventor： Jani Reijonen , Joel Lee Groves
CPC classification number: H01J35/04 , H01J35/16 , H01J2235/02 , H01J2235/06 , H01J2235/086 , H01J2235/165 , H01J2235/20 , H05G1/06 , H05H3/06
Abstract: Systems, methods, and devices with improved electrode configuration for downhole nuclear radiation generators are provided. For example, one embodiment of a nuclear radiation generator capable of downhole operation may include a charged particle source, a target material, and an acceleration column between the charged particle source and the target material. The acceleration column may include an intermediate electrode that remains floating at a variable potential, being electrically isolated from the rest of the acceleration column.
-
公开(公告)号：US09685295B2
公开(公告)日：2017-06-20
申请号：US14235380
申请日：2012-07-26
Applicant: William P. King , Lane W. Martin , Patrick C. Fletcher
Inventor： William P. King , Lane W. Martin , Patrick C. Fletcher
Abstract: Provided herein are electron emission devices and device components for optical, electronic and optoelectronic devices, including cantilever-based MEMS and NEMS instrumentation. Devices of certain aspects of the invention integrate a dielectric, pyroelectric, piezoelectric or ferroelectric film on the receiving surface of a substrate having an integrated actuator, such as a temperature controller or mechanical actuator, optionally in the form of a cantilever device having an integrated heater-thermometer. Also provided are methods of making and using electron emission devices for a range of applications including sensing and imaging technology.
-
-
-
-
-
-
-
-
-
Search Results
137
records
(took 0.013 seconds)
