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8063390 |
Electron cooling system and method for increasing the phase space intensity and overall intensity of ion beams in multiple overlap regions
An electron cooling system and method for increasing the phase space intensity and overall intensity of ion beams in multiple overlap regions, including a vacuum chamber to allow a single electron...
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7167170 |
Electron gun with a multi-media monitor
An electron gun used with a multi-media monitor with a low cathode voltage and improved focusing performance. The electron gun, which includes a cathode, a control electrode, a screen electrode,...
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6841924 |
Low-voltage high-resolution einzel gun
A low voltage Einzel gun design maximizes the size of the second main lens to reduce spherical aberrations thereby reducing spot-size and improving focus quality. The gun's final accelerator...
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6544330 |
Bonded, walk-off compensated optical elements
A bonded, walk-off compensated crystal, for use with optical equipment, and methods of making optical components including same.
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6479937 |
Multi-beam index CRT with horizontal phosphor lines
A multi-beam color index cathode ray tube (CRT) includes vertically spaced, horizontal phosphor stripes on the inner surface of its display screen. The parallel phosphor bands are arranged in...
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6420841 |
Color display device
A colour display device (19) is disclosed having an improved focus performance. In state-of-the-art colour display tubes, a static voltage is applied to the focusing electrode (23). This means that...
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6373175 |
Electronic switching devices
A high-speed field emission vacuum switching device comprises a cathode tip formed on a substrate, an extraction grid close to the cathode tip, and a modulator grid spaced from the cathode tip by a...
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6320333 |
Color picture tube
A color picture tube of the present invention comprises three in-line cathodes (1a, 1b, 1c) aligned in the horizontal direction, a first focussing electrode (4) supplied with a focus voltage, a...
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6265819 |
Electron gun structure
An electron gun assembly includes a plurality of cathodes arranged in an in-line direction, at least first through fourth grids having electron beam passing holes arranged in an in-line direction,...
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6166483 |
QPF electron gun with high G4 voltage using internal resistor
An internal resistor within a color cathode ray tube (CRT) is connected to a voltage source and is coupled across a G4 grid and a G6 grid of the CRT's multi-grid quadrupole (QPF) electron gun....
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6072271 |
Inline electron gun having improved beam forming region
An improved inline electron gun includes a plurality of electrodes spaced from three cathodes in the direction of a longitudinal axis of the gun. The electrodes form at least a beam forming region...
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5818157 |
Color cathode ray tube having an in-line electron gun with asymmetrical apertures
A color cathode ray tube includes an in-line electron gun having a main lens with recessed apertures. The main lens is formed by two electrodes. These electrodes have outer edges and recessed...
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5770929 |
Electric power source assembly for focusing electrode of color cathode ray tube apparatus
An electric power source assembly supplies the focusing electrodes of a color cathode ray tube. Such a color cathode ray tube normally includes three electron guns arranged in a line transverse to...
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5760550 |
Color picture tube
An in-line color picture tube compensates for the distortion in the illuminated spot at the peripheral portion of the screen in a horizontally oblong shape. In particular, with an increase in the...
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5744903 |
Color cathode ray tube with subelectrodes
Color cathode ray tube (1) device having an electron gun (6) of the in-line type for generating three electron beams (7,8,9), a display screen (10) and deflection coils (11) for scanning the...
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5734235 |
Electron gun with reduced astigmatism and curvature of field and CRT employing same
An electron gun for a cathode ray tube includes an accelerating electrode to be supplied with a maximum voltage, a focus electrode disposed adjacent to but spaced from the accelerating electrode,...
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5729099 |
Electron gun having improved focus and convergence, and color cathode-ray tube and image display device
In an electron gun, and a color cathode-ray tube and an image display device using the electron gun, each of two pairs of convergence electrodes is disposed in a focusing electrode for focusing...
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5719475 |
Electron gun with a dynamic driving quadrupole lens for a color cathode ray tube
An electron gun having an improved circuitry for driving the electron gun, which includes a cathode ray tube accommodating at least a cathode, a control electrode, a first acceleration electrode, a...
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5656885 |
Flat CRT having a carbon layer on an inner surface of a back panel
The present invention is directed to a transmission type flat cathode ray tube in which a flat glass tube envelope (15) is formed of a triple structure having a screen panel (11), a back panel (12)...
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5621276 |
Cathode ray tube
A cathode ray tube suitable for use as a visual display includes two or more electron guns. The beams from the electron guns are aligned vertically so that a single horizontal scan of the guns...
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5621286 |
Color cathode ray tube having improved focus
A color cathode ray tube includes an electron beam generating source, a first accelerating electrode, a focus electrode, and a second accelerating electrode, for focusing an electron beam onto the...
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5448134 |
Cathode ray tube having improved structure for controlling image quality
A cathode ray tube having an electron gun for relatively low beam currents (less than 1 mA) is shown. The electron gun has a G1 and a G2 electrode. The voltage difference between these electrodes...
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5397959 |
Twin-convex electron gun
An electron gun for a cathode-ray tube has, in addition to its main lens, a triode with first and second grids as control electrodes. The thickness of the second grid, and the separation between...
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5389855 |
Multi-beam electron gun for monochrome CRT
A multi-beam electron gun for use in a monochrome cathode ray tube (CRT) such as used in a black and white television receiver, a projection television receiver, or a computer monitor includes G1...
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5336973 |
System making it possible to control the shape of a charged particle beam
A system for controlling the shape of a charged particle beam. The particle beam is emitted from a source (58) of the said particles. Said source is associated with a collecting electrode which...
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5321336 |
Electron gun device for controlling the potential of a body in space
The cathode of an electron gun is connected to the body of a space vehicle, performing an automatic limitation (or neutralization) of the negative potential (measured with respect to the physical...
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RE34339 |
Cathode ray tube
At least one of the focusing electrodes stages disposed between an acceleration electrodes stage and a rear focusing electrodes stage is constituted by first and second grid electrodes, confronting...
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5221875 |
High resolution cathode-ray tube with high bandwidth capability
The present invention includes a cathode-ray tube (10) capable of providing a high-brightness, high-resolution large screen display that is compatible with, for example, field sequential liquid...
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5182492 |
Electron beam shaping aperture in low voltage, field-free region of electron gun
Energetic electrons emitted by heated cathodes in a multi-beam color cathode ray tube (CRT) are directed to a low voltage beam forming region (BFR) of an electron gun, with the thus formed electron...
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5175468 |
Device for generating an on-off modulation electron beam
An electron gun and a high tension switch permits the achievement of high-power electron beams which are ON-OFF modulated by DC up to frequencies exceeding kHz. The electron gun has a cathode, at...
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5159240 |
Low voltage limiting aperture electron gun
A limiting aperture disposed in a low voltage, beam forming region (BFR) of an electron gun in a cathode ray tube (CRT) provides reduced electron beam spot size with low power dissipation. The...
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5155412 |
Method for selectively scaling a field emission electron gun and device formed thereby
The present invention is directed to a method for selectively scaling the dimensions of a field emission electron gun. The electron gun includes a field emission tip followed by a dual electrode...
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5126633 |
Method of and apparatus for generating uniform elongated electron beam with the aid of multiple filaments
A novel electron beam apparatus and technique wherein a plurality of longitudinally extending heated filaments is employed, each similarly offset laterally of a central longitudinal axis, but with...
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4980606 |
Electron beam focusing device for use in a CRT
An electron beam focusing device for use in a cathode ray tube (CRT) including a first and a second conductor film each formed on the inner surface of a neck portion of the CRT, which are spaced...
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4942342 |
Parallel sweeping system for electrostatic sweeping ion implanter
A parallel sweeping system for electrostatic sweeping ion implanters comprising an ion source for generating an ion beam, first and second multipole beam deflectors along and around a common...
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4914724 |
Electron gun for cathode ray tube
Disclosed is an electron gun for cathode ray tubes successively comprising an electron source electrode or cathode, a control or Wehnelt electrode, a first acceleration electrode or anode carried...
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4886999 |
Cathode ray tube apparatus with quadrupole electrode structure
A cathode ray tube apparatus comprises three cathodes arranged in line with each other in a first direction for emission of respective electron beams therefrom, a focusing electrode having first to...
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4853601 |
Multiple beam electron discharge tube having bipotential acceleration and convergence electrode structure
A multiple beam cathode-ray tube employs a bipotential electrode structure to provide acceleration and convergence of the electron beams without the use of a resistive helix coil. In a preferred...
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4851741 |
Electron gun for color picture tube
An electron gun for color picture tube wherein a focusing electrode adjacent to an acceleration electrode supplied with highest voltage includes two members comprising a first member and a second...
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4752721 |
Charged particle beam deflector and flat CRT using the same
A charged-particle beam electric field deflector includes plural (n) pairs or sets of facing deflection electrodes to accelerate and deflect the beam. Different d.c. acceleration voltages are...
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4745324 |
High power switch tube with Faraday cage cavity anode
A high-power switch tube is shown constructed from a plurality of electron guns each gun having a cathode and an anode. Between the cathode and anode is mounted a shadow grid closest to the cathode...
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4737680 |
Gridded electron gun
An improved grid arrangement is shown for a gridded electron gun wherein the control grid and/or shadow grid is provided with tapering grid vanes which reduce the amount of voltage required to cut...
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4682077 |
Television camera tube device
A camera tube device for use in a television camera comprises an electron gun including a cathode electrode for emission of an electron beam, and first and second grid electrodes respectively...
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4659961 |
Cup member of an in-line electron gun capable of reducing a coma aberration
For use in an in-line electron gun of a cathode ray tube, a cup member comprises a planar plate having three apertures aligned with one another and a collar portion protruded from the planar plate....
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4593230 |
Dual-mode electron gun
An improved dual-mode electron gun includes a close-in and a further control grid to control the laminar flow of electrons which pass from the smooth spherical surface of a cathode toward an...
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4549113 |
Low noise electron gun
Disclosed is an electron gun comprising a cathode, a first apertured anode spaced from said cathode and operated at a potential of between 5 and 30 volts positive with respect to the cathode. The...
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4506191 |
Light source cathode ray tube
A cathode ray tube light ray source uses only a single current control electrode between the cathode and anode, and the aperture in the electrode is between 1 mm and 3 mm in diameter. The distance...
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4486687 |
Electron gun for convergent beam, and a device, particularly a vidicon tube, equipped with such a gun
For reducing as much as possible the dimension of converging electron beams, at their point of minimum section, the invention provides in this zone an ionic charge counterbalancing the space charge...
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4481445 |
Electron gun for projection television cathode ray tubes
A high-performance bipotential-type electron gun comprises a series of electrodes aligned in spaced relation on an axis. The gun has in the order named lower end means including a cathode, and an...
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4473775 |
Cathode-ray tube device
An auxiliary grid which is formed with one or more elongated slits through which pass electron beams is disposed in a prefocusing system in a cathode-ray tube, and a dynamic voltage which varies in...
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