Details of cathode ray tubes or electron beam tubes

HELECTRICITY H01Electric elements H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

H01J2229/00Details of cathode ray tubes or electron beam tubes

H01J2229/0007Elimination of unwanted or stray electromagnetic effects H01J2229/0015Preventing or cancelling fields leaving the enclosure H01J2229/0023Passive means H01J2229/003Preventing or cancelling fields entering the enclosure H01J2229/0038Active means H01J2229/0046Preventing or cancelling fields within the enclosure H01J2229/0053Demagnetisation H01J2229/0061Cooling arrangements H01J2229/0069Active means H01J2229/0076applied to the faceplate H01J2229/0084Translucent coolant H01J2229/0092Passive means H01J2229/07Shadow masks H01J2229/0705Mounting arrangement of assembly to vessel H01J2229/0711Spring and plate (clip) type H01J2229/0716Mounting arrangements of aperture plate to frame or vessel H01J2229/0722Frame H01J2229/0727Aperture plate H01J2229/0733characterised by the material H01J2229/0738Mitigating undesirable mechanical effects H01J2229/0744Vibrations H01J2229/075Beam passing apertures H01J2229/0755characterised by aperture shape H01J2229/0761Uniaxial masks having parallel slit apertures H01J2229/0766Details of skirt or border H01J2229/0772Apertures, cut-outs, depressions, or the like H01J2229/0777Coatings H01J2229/0783improving thermal radiation properties H01J2229/0788Parameterised dimensions of aperture plate H01J2229/0794Geometrical arrangements H01J2229/18Phosphor screens H01J2229/183multi-layer H01J2229/186Geometrical arrangement of phosphors H01J2229/48Electron guns H01J2229/4803Electrodes H01J2229/4806Shield centering cups H01J2229/481Focusing electrodes H01J2229/4813Pre-focusing H01J2229/4817Accelerating electrodes H01J2229/482Extraction grids H01J2229/4824Constructional arrangements of electrodes H01J2229/4827Electrodes formed on surface of common cylindrical support H01J2229/4831Electrode supports H01J2229/4834Electrical arrangements coupled to electrodes H01J2229/4837characterised by the potentials applied H01J2229/4841Dynamic potentials H01J2229/4844characterised by beam passing apertures or combinations H01J2229/4848Aperture shape as viewed along beam axis H01J2229/4851trapezoidal H01J2229/4855with rounded end or ends H01J2229/4858parallelogram H01J2229/4862square H01J2229/4865rectangle H01J2229/4868with rounded end or ends H01J2229/4872circular H01J2229/4875oval H01J2229/4879non-symmetric about field scanning axis H01J2229/4882non-symmetric about line scanning axis H01J2229/4886polygonal H01J2229/4889cross shaped H01J2229/4893Interconnected apertures H01J2229/4896complex and not provided for H01J2229/50Plurality of guns or beams H01J2229/502Three beam guns H01J2229/505Arrays H01J2229/507Multi-beam groups H01J2229/56Correction of beam optics H01J2229/563Aberrations by type H01J2229/5632Spherical H01J2229/5635Astigmatism H01J2229/5637Colour purity H01J2229/568using supplementary correction devices H01J2229/5681magnetic H01J2229/5682Permanently magnetised materials H01J2229/5684Magnetic materials H01J2229/5685Cross-arms field shaper H01J2229/5687Auxiliary coils H01J2229/5688Velocity modulation H01J2229/58Electron beam control inside the vessel H01J2229/581by magnetic means H01J2229/582by electrostatic means H01J2229/583at the source H01J2229/5835cooperating with the electron gun H01J2229/585at the screen H01J2229/587between the source and the screen H01J2229/70Electron beam control outside the vessel H01J2229/703by magnetic fields H01J2229/7031Cores for field producing elements H01J2229/7032Conductor design and distribution H01J2229/7033Winding H01J2229/7035Wires and conductors H01J2229/7036Form of conductor H01J2229/7037flat H01J2229/7038Coil separators and formers H01J2229/86Vessels and containers H01J2229/8603Neck or cone portions of the CRT vessel H01J2229/8606characterised by the shape H01J2229/8609Non circular cross-sections H01J2229/8613Faceplates H01J2229/8616characterised by shape H01J2229/862Parameterised shape H01J2229/8623Substrates H01J2229/8626Frames H01J2229/863Passive shielding means associated with the vessel H01J2229/8631Coatings H01J2229/8632characterised by the material H01J2229/8633Meshes and patterns H01J2229/8634Magnetic shielding H01J2229/8635Antistatic shielding H01J2229/8636Electromagnetic shielding H01J2229/8637Mechanical shielding H01J2229/8638Ionising radiation shielding H01J2229/87Means for avoiding vessel implosion H01J2229/875Means substantially covering the output face H01J2229/88Coatings H01J2229/882having particular electrical resistive or conductive properties H01J2229/885having particular electrical insulation properties H01J2229/887having particular X-ray shielding properties H01J2229/89Optical components associated with the vessel H01J2229/8901Fixing of optical components to the vessel H01J2229/8903Fibre optic components H01J2229/8905Direction sensitive devices for controlled viewing angle H01J2229/8907Image projection devices H01J2229/8909Baffles, shutters, apertures or the like against external light H01J2229/8911Large-scale devices H01J2229/8913Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices H01J2229/8915Surface treatment of vessel or device H01J2229/8916inside the vessel H01J2229/8918by using interference effects H01J2229/892Effect varying over surface H01J2229/8922Apparatus attached to vessel and not integral therewith H01J2229/8924having particular properties for protecting the vessel H01J2229/8926Active components H01J2229/8928Laser CRTs H01J2229/893using lenses H01J2229/899Photographic devices (permanent recording of images) H01J2229/92Means providing or assisting electrical connection with or within the tube H01J2229/922within the tube H01J2229/925associated with the high tension [HT] H01J2229/927associated with digital scanning H01J2229/94Means for obtaining or maintaining the desired pressure within the tube H01J2229/96Circuit elements other than coils, reactors or the like, associated with the tube H01J2229/962associated with the HT H01J2229/964associated with the deflection system H01J2229/966associated with the gun structure H01J2229/968Resistors