公开(公告)号：EP1756853B1

公开(公告)日：2009-07-01

申请号：EP05752440.7

申请日：2005-05-19

申请人： Osram Gesellschaft mit beschränkter Haftung

发明人： BITTMANN, Thomas ,  MITTLER, Bodo

IPC分类号： H01J61/073 ,  H01J61/36 ,  H01J1/13

CPC分类号： H01J61/0732 ,  H01J61/36

摘要： The invention relates to an electrode for a discharge lamp which comprises an elongate shank (11a) and a top (11b) that is arranged on one end of the shank (11a). Said shaft (11a) is flattened to such an extent that its dimensions at an angle to is longitudinal extension are not larger than the corresponding transversal dimensions of the top (11b).

公开(公告)号：EP1602120A4

公开(公告)日：2009-01-07

申请号：EP03718400

申请日：2003-04-16

申请人： THOMSON LICENSING

发明人： JACKSON DAVID ROSS

IPC分类号： H01J1/13 ,  H01J9/04 ,  H04N3/27 ,  H04N5/46 ,  H04N5/63 ,  H04N5/68 ,  H04N11/00

CPC分类号： H04N5/68 ,  H01J1/135 ,  H04N5/63

摘要： A power supply for a video display tube includes a deflection transformer with a primary winding powered with a scan voltage which has a first value when displaying signal according to a first video standard and a second voltage when displaying video according to a second standard. A secondary winding of the transformer produces filament voltage for the display tube. A variable coupler couples the filament voltage to the filament of the picture tube in an amount established by a control signal. A memory produces a first control signal in response to the first scan voltage and a second control signal in response to the second scan voltage. The first and second control signals are selected so that the voltage coupled from the transformer to the filament is the same at both scan voltages.

公开(公告)号：EP1623443A2

公开(公告)日：2006-02-08

申请号：EP04731955.3

申请日：2004-05-10

申请人： UNIVERSITY OF SURREY

发明人： COX, David Christopher ,  FORREST, Roy Duncan, The Wardens Flat, Int. house ,  SILVA, Sembukutiarachilage Ravi

IPC分类号： H01J1/13 ,  H01J1/304 ,  H01J9/02 ,  H01J9/04

CPC分类号： B82Y10/00 ,  H01J1/304 ,  H01J9/025 ,  H01J2201/30469

摘要： A thermionic cathode (100) comprises an individual carbon nanotube (102) attached between two electrodes (104, 106). The electrodes (104, 106) each comprise a post (110, 112) and a carbon fibre (114, 116). A gap (118) narrower than the Iength of the nanotube (102) is provided between the two carbon fibres and the carbon nanotube (102) bridges the gap. This provides an extremely efficient thermionic cathode (100).

公开(公告)号：EP0214798B1

公开(公告)日：1993-07-14

申请号：EP86306503.3

申请日：1986-08-21

申请人： VARIAN ASSOCIATES, INC.

发明人： Miram, George V. ,  Treseder, Robert C.

IPC分类号： H01J1/13

CPC分类号： H01J1/135 ,  H01J1/13 ,  H01J23/04

公开(公告)号：EP0456054A3

公开(公告)日：1992-09-02

申请号：EP91106807.0

申请日：1991-04-26

申请人： GENERAL ELECTRIC COMPANY

发明人： Pugh, John William ,  Bly, Donald Lee

IPC分类号： H01K1/08 ,  H01J1/13

CPC分类号： H01K1/08

摘要： Improved tungsten filaments having good sag resistance and useful in energy efficient, high intensity lamps having a microstructure comprising a large, elongated and interlocking grain structure, methods for producing same and their use in electric lamps. Such filaments have been successfully used in miniature, double end quartz, tungsten-halogen lamps having IR filters.

公开(公告)号：EP0448133A3

公开(公告)日：1992-03-11

申请号：EP91108614.8

申请日：1986-08-21

申请人： VARIAN ASSOCIATES, INC.

发明人： Miram, George V. ,  Treseder, Robert C.

IPC分类号： H01J1/16 ,  H01J23/04 ,  H01J1/13

CPC分类号： H01J1/135 ,  H01J1/13 ,  H01J23/04

摘要： A directly heated cathode assembly comprises a cathode button 100 having a concave surface, two electrodes 120, 170 positioned on said cathode button such that the application of a voltage between them causes current to flow through the body of the cathode button thereby causing heat to be produced within the body of the cathode button. The current flow is evenly distributed between the electrodes by an arrangement incorporated within the cathode button illustrated as a maze of insulating pieces 220. This maze causes the current to travel in a path substantially greater in length than the distance between the electrodes.

公开(公告)号：EP0294401B1

公开(公告)日：1991-03-13

申请号：EP87906874.0

申请日：1987-09-28

申请人： Hughes Aircraft Company

发明人： MANOLY, Arthur, E.

IPC分类号： H01J23/04 ,  H01J1/13

CPC分类号： H01J23/04 ,  H01J1/13 ,  H01J1/135

摘要： A dish-shaped dispenser cathode (28) is mounted at one end of a cathode housing (10), with a heater wire coil (42) mounted behind the cathode (28). A warm-up power supply (70) electrically connected between the central region and the periphery of the cathode (28) causes heating current to flow through the cathode (28) during a short period of time at the start of cathode operation to provide rapid warm-up of the cathode (28). A sustaining power supply (76) electrically connected between the respective ends of the heater wire coil (42) causes sustaining current to flow through the heater wire coil (42) to provide sustaining heat to the cathode (28) by radiation from the heater coil (42) to maintain the cathode (28) at its desired operating temperature.

公开(公告)号：EP0130379A2

公开(公告)日：1985-01-09

申请号：EP84106176.5

申请日：1984-05-30

申请人： International Business Machines Corporation

发明人： Schick, Jerome David

IPC分类号： H01J37/24 ,  H01J1/13

CPC分类号： H01J37/242 ,  H01J1/135

摘要： A method of extending the lifetime of an electron beam filament, typically LaB. by applying power to the filament over a preselected period in a substantially linear manner. The time period is typically 20 minutes before a steady state power level is attained with a fully stabilized instrument. Power-down is a reverse of the power-up sequence until all power is removed.

公开(公告)号：EP4131320A1

公开(公告)日：2023-02-08

申请号：EP21788952.6

申请日：2021-01-28

申请人： Hamamatsu Photonics K.K.

发明人： HARAGUCHI Dai ,  HASEGAWA Yoshito

IPC分类号： H01J19/12 ,  G21K5/00 ,  G21K5/02 ,  G21K5/04 ,  H01J1/13 ,  H01J1/18 ,  H01J1/22 ,  H01J19/16 ,  H01J19/20 ,  H01J35/00 ,  H01J35/06 ,  H05G1/00

摘要： Disclosed is an electron beam generation source including: an electron discharge part extending on a desired axis and configured to discharge electrons; a support part electrically connected to a power supply device that supplies electric power to the electron discharge part; a tension holding part connected between one end of the electron discharge part and the support part and configured to hold tension of the electron discharge part with a pressing force or a tensile force; and a power supply path part having one end electrically connected to the support part and the other end electrically connected to the one end of the electron discharge part. An electric resistance value of the tension holding part is larger than an electric resistance value of the power supply path part.

公开(公告)号：EP3065161B1

公开(公告)日：2018-11-21

申请号：EP15778595.7

申请日：2015-01-09

申请人： Technology Research Association For Future Additive Manufacturing

发明人： SATO, Takashi

IPC分类号： H01J37/06 ,  H01J37/04 ,  H01J1/13 ,  B29C67/00

CPC分类号： H01J37/065 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2999/00 ,  B33Y30/00 ,  H01J3/08 ,  H01J3/12 ,  H01J37/06 ,  H01J37/304 ,  H01J2237/06308 ,  H01J2237/0653 ,  Y02P10/295 ,  B22F2203/03 ,  B22F2202/06 ,  B22F2202/11

摘要： When an emission current is changed, a decrease in brightness of an electron beam is prevented. An electron gun includes a cathode that emits thermoelectrons, a Wehnelt electrode that focuses the thermoelectrons, a control electrode that extracts the thermoelectrons from a distal end of said cathode, an anode that accelerates the thermoelectrons and irradiates a powder with the thermoelectrons as an electron beam, and an optimum condition collection controller that changes at least one of a bias voltage to be applied to the Wehnelt electrode and a control electrode voltage to be applied to the control electrode, and decides a combination of the bias voltage and the control electrode voltage at which the brightness of the electron beam reaches a peak.