Abstract:
A charged particle beam source that may include an emitter that has a tip for emitting charged particles; a socket; electrodes; a filament that is connected to the electrodes and to the emitter; electrodes for providing electrical signals to the filament; a support element that is connected to the emitter; and a support structure that comprises one or more interfaces for contacting only a part of the support element while supporting the support element.
Abstract:
A cathode for an X-ray tube, an X-ray tube, a system for X-ray imaging, and a method for an assembly of a cathode for an X-ray tube include a filament, a support structure, a body structure, and a filament frame structure. The filament is provided to emit electrons towards an anode in an electron emitting direction, and the filament at least partially includes a helical structure. Further, the filament is held by the support structure which is fixedly connected to the body structure. The filament frame structure is provided for electron-optical focusing of the emitted electrons, and the filament frame structure is provided adjacent to the outer boundaries of the filament. The filament frame structure includes frame surface portions arranged transverse to the emitting direction, and the filament frame structure is held by the support structure.
Abstract:
In some embodiments, a light source including a first electrode that includes a projection and a depression, a second electrode including a projection and a depression, an insulating layer disposed between the first electrode and the second electrode, and a light-emitting element straddling the insulating layer and disposed on the projection of the first electrode and on the projection of the second electrode. In other embodiments, a lighting device including a base that includes a first terminal and a second terminal that are configured to be electrically connected to the light source to supply current to the light-emitting element. In some embodiments, the lighting device is a lighting bulb, and in other embodiments, the lighting device is tube-shaped.
Abstract:
Two U-shaped inner tubes, each of which have a straight leg which is hermcally sealed about a preheatable electrode, are sealed into the upper, oval reception section of a preshaped flare. The seal also includes the exhaust tube and the lead-in wire pairs supporting the preheatable electrodes and is carried out as a press seal in one single working step. The other legs of the U-shaped inner tubes remain open. The lower, outwardly facing rim of the preshaped flare which is concentric with the longitudinal lamp axis is sealed to an outer envelope whose neck drops off during this sealing process and which surrounds the U-shaped inner tubes and contains a gas and/or metal vapor filling. The inner tubes are preferably coated with a three-line phosphor, and the outer envelope is provided with a light diffusing coating. The single-ended low-pressure discharge lamp may largely be manufactured on conventional machines and may be directly used in place of an incandescent lamp as a compact lamp of low electrical wattage when a starting and operating circuitry is incorporated in a conventional type of base used for incandescent lamps. Also disclosed are methods of manufacture of such a lamp.
Abstract:
In a base plate assembly including an insulative substrate for a luminescence display tube and grid supports formed on the substrate along side edges thereof, a plurality of protrusions are extended sideways from the body of the substrate beyond the grid supports. When each of the grid supports has a protrusion left after cutting of the supports from two frames, the protrusions of the substrate are extended beyond the protrusions of the grid supports.
Abstract:
A charged particle beam source that may include an emitter that has a tip for emitting charged particles; a socket; electrodes; a filament that is connected to the electrodes and to the emitter; electrodes for providing electrical signals to the filament; a support element that is connected to the emitter; and a support structure that comprises one or more interfaces for contacting only a part of the support element while supporting the support element.
Abstract:
A charged particle beam source that may include an emitter that has a tip for emitting charged particles; a socket; electrodes; a filament that is connected to the electrodes and to the emitter; electrodes for providing electrical signals to the filament; a support element that is connected to the emitter; and a support structure that comprises one or more interfaces for contacting only a part of the support element while supporting the support element.
Abstract:
A display arrangement is provided in the form of an elongate evacuated envelope (1) having a phosphor screen (11) which is capable of providing a very bright display. A number of mesh electrodes (6) are positioned side by side along the length of the envelope so as to selectively determine which portions of the phosphor screen emit light. By controlling the potential of the mesh electrodes, the display can be switched on and off rapidly to provide a versatile form of information display. A large number of evacuated envelopes can be assembled to form a two dimensional array and if desired a color display can be provided by using phosphor patched of different colors.