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7595490 |
Charged particle beam emitting device and method for operating a charged particle beam emitting device
A method for operating a charged particle beam emitting device and, in particular, an electron beam emitting device including a cold field emitter is provided. The method includes the steps of...
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7544951 |
Electron gun assembly
A device which employs an electron beam, for performing a desired function, includes an electron gun for generating the electron beam. The electron gun includes a barrel shaped rotatable structure...
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7471035 |
Internal conductively-heated cathode
The present invention relates to an internally heated cathode. More specifically, the internally heated cathode that comprises an a cavity structure, where at least a portion of the cavity...
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7468576 |
Multi-segment filament high output halogen lamp
A high output halogen lamp having five filament segments with four segments in a circular arrangement surrounding a fifth segment positioned directly in the center of the lamp axis which...
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7456558 |
Electric incandescent lamp provided with different pitch factors for each end of a filament component
The invention relates to an electric incandescent lamp, in particular a vehicle headlight, having at least one incandescent filament which is arranged within a light-permeable lamp vessel, the at...
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7368870 |
Radiation emitting structures including photonic crystals
Radiation emitting structures that include an active radiation emitter and a passive photonic crystal structure surrounding the emitter are disclosed. The passive photonic crystal structure is...
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7355186 |
Charged particle beam device with cleaning unit and method of operation thereof
The invention provides a charged particle beam device, an emitter module for emitting charged particle beams and a method of operation thereof. Thereby, a charged particle beam emitter ( 15 )...
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7322871 |
Process to make nano-structured emitters for incandescence light sources
In a process to make an emitter ( 10 ) for light sources, which can be led to incandescence through the passage of electric current, a layer made of anodized porous alumina ( 1 ) is used as...
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7321188 |
Light filament formed from carbon nanotubes
A light filament ( 206 ) formed from carbon nanotubes is characterized by high mechanical strength and durability at elevated temperatures, a high surface area to volume ratio, and high emissivity....
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7049735 |
Incandescent bulb and incandescent bulb filament
An incandescent bulb filament having a flat Light-emitting surface and high Lamp efficiency and an incandescent bulb using this filament are provided. This incandescent bulb filament is...
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6979942 |
Cathode emissive body for an impregnated cathode of an electron tube
Body ( 1 ) formed from a porous matrix impregnated with an electron-emitting material, defined by external faces ( 11, 12, 13 ) that all have a roughness of less than 0.2 μm. Because of this...
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6972522 |
Magnetron
A magnetron capable of being efficiently assembled is provided. The magnetron includes a filament, a pair of shields, a pair of leads, a pair of connection plates, and a pair of terminal rods. The...
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6882093 |
Long-life electron tube device, electron tube cathode, and manufacturing method for the electron tube device
An electron tube cathode includes an emitter layer 30 whose main component is barium oxide and that includes a metal and/or a metal oxide as a dopant is formed on a base metal 20 whose main...
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6853119 |
Double layer electrode coil for a HID lamp and method of making the electrode coil
A double-layer electrode coil for a high intensity discharge (HID) lamp and a method of making the electrode coil are provided. A more stable layer of coils is made by front winding, instead of...
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6812626 |
Light source with matrix of microfilaments
A light source composed of a planar, or substantially level, flat or curved, rigid or flexible, matrix of microfilaments integrated on a single substrate and capable of emitting light by...
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6803709 |
Directly-heated oxide cathode and fluorescent display tube using the same
A directly-heated oxide cathode and a fluorescent display tube using the same, which works with low power consumption, is provided. In a filament cathode, an alkaline earth oxide having an average...
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6800989 |
Method of forming filament for electron beam emitter
A filament for generating electrons for an electron beam emitter where the filament has a cross section and a length. The cross section of the filament is varied along the length for producing a...
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6798128 |
Cathode-ray tube cathode and alloy therefor
A nickel alloy for the manufacture of cathodes for cathode-ray tubes, comprises magnesium and aluminium in proportions chosen so as to allow good adhesion of an emissive oxide layer to the basis...
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6759798 |
Structure of capsule for rapidly expanding metallic mixture
A structure of a capsule for a rapidly expanding metallic mixture includes one or more trigger electrode support rods arranged between the main trigger electrodes such that the trigger electrode...
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6707240 |
Electron gun and electron beam exposure device
An electron gun includes a plate-like main cathode 77 having an electron emitting surface 79 and a sub-cathode 81 provided toward the rear surface of the main cathode to heat the main cathode...
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6646366 |
Directly heated thermionic flat emitter
A directly heated thermionic flat emitter has an emission surface divided by slots into interconnects that have respective terminal lugs forming power leads arranged at a peripheral edge. A number...
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6616756 |
Protection for a carbon material, in particular C/C composite, bowl that is to receive a crucible, such as a silica crucible for drawing silicon
Prior to housing the crucible in the bowl, a consumable buffer ply is applied over at least a portion of the inside face of the bowl, the ply being constituted essentially by a non-rigid carbon...
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6608442 |
Flat bulb
The invention relates to a bulb designed for emitting radiation through an emission surface ES of an envelope ENV which contains a radiation source ELM. According to the invention, the emission...
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6469447 |
Fluorescent lamp lighting apparatus
A fluorescent lamp lighting apparatus includes a fluorescent light emitting tube; and an electronic lighting circuit for applying an electric current to the fluorescent light emitting tube. The...
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6426587 |
Thermionic emitter with balancing thermal conduction legs
A thermionic emitter has a flat emission surface that is subdivided by slits into generally spiral or serpentine conductor sections, the surface having legs extending therefrom that form part of...
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6417607 |
Cold electrode for gas discharges
Cold electrodes for gas discharges have an electrically conductive carrier material on which an emission coating is disposed. The photoelectric output work of the material of the emission coating...
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6404115 |
Particle beam emitting assembly
A charged particle emitting assembly comprises an emitter member ( 5 ) for emitting charged particles of one polarity. A tubular shield electrode ( 6 ) circumferentially surrounds the emitter...
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6259193 |
Emissive filament and support structure
A filament comprises a generally thin metal component, such as a sheet, ribbon, or foil. The filament comprises at least one emitter, at least one current-condensing structure and a tab on each end...
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6191527 |
Stress relieved filament support assembly
The structure is an improvement to prevent thermal cycle damage to a braze joint in a magnetron filament assembly. The filament is welded to a molybdenum filament weld ring which, in turn, is...
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6124666 |
Electron tube cathode
An electron tube cathode comprises a base (1) formed mainly of nickel, an alloy layer (4) disposed on the base (1) and including nickel and tungsten having a grain size smaller than that of the...
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5959398 |
Cathode ray tube with improved cathode structure
A cathode ray tube is provided with an electron gun which comprises a cathode structure which contains an electron-emitting material at an end portion and in which a heating element of bifilarly...
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5861716 |
Magnetron having a cathode mount with a grooved recess for securely receiving a cathode filament
A magnetron includes a cathode mount having a directly heated helical cathode filament for emitting thermoelectrons, an upper end shield and a lower end shield disposed so as to support the...
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5729082 |
Cathode structure comprising a heating element
A cathode structure comprises at an end portion (1) an electron-emitting material (4) and a heating element (5) of wire (7), said cathode structure having a plurality of primary helical turns (8)....
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5708326 |
Rhenium tungsten alloy wire for use in a filamentary cathode of a fluorescent display device
A fluorescent display device including a cathode filament increased in mechanical strength and reduced in end cool. A 26% Re-W filament of 0.64 MG (corresponding to 0.64 mg in weight per 20 cm in...
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5680003 |
Coiled-coil filament design for an incandescent lamp
An improved coiled-coil filament for use in an incandescent lamp has a primary coil winding with a substantially uniform spacing between successive coil turns. The primary coil winding is wound...
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5629716 |
Luminescent panel for color video display and its driving system, and a color video display apparatus utilizing the same.
A plurality of filaments are stretched in parallel on a rear plate, and an insulating plate is provided so as to cover the filaments. In the insulating plate, a plurality of through-holes are...
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5621269 |
Cathode assembly of a magnetron
A cathode assembly for a magnetron having a lower end shield for supporting a filament joined thereto and an insulator supporting a lower end shield on which the filament is mounted, the insulator...
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5606141 |
Electrical conductor in lamps
The present invention relates to a strip-like current feeder based on molybdenum-yttrium oxide, for electric lamps with a metal/glass sealing. In addition to molybdenum-yttrium oxide, the strip...
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5552660 |
Fluorescent display device including a filamentary cathode with increased mechanical strength and reduced end cooling effect
A fluorescent display device including a cathode filament increased in mechanical strength and reduced in end cool. A 26% Re-W filament of 0.64 MG corresponding to 0.64 mg in weight per 20 cm in...
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5391433 |
Carbon material for electrodes and process for preparing it
A carbon material for electrodes which is a graphite/glass like carbon composite material having a structure in which the crystals of the graphite are oriented in one direction in the matrix of the...
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5389853 |
Incandescent lamp filament with surface crystallites and method of formation
The invention refers to a filament having improved emission of visible light. The emissivity of a tungsten filament is improved by depositing a layer of submicron-to-micron crystallites on the...
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5357747 |
Pulsed mode cathode
A cathode in an MPD thruster has an internal heater and utilizes low work function material. The cathode is preheated to operating temperature, and then the thruster is fired by discharging a...
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5343112 |
Cathode arrangement
A cathode arrangement for emitting electrons includes an electrode-conductive emission body that defines an emission surface from which the electrons propagate. A slit pattern is cut into the...
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5198720 |
Direct heating cathode structure for cathode ray tubes
A direct heating cathode structure for a miniature cathode ray tube is disclosed wherein angular rod-shaped supports where the coiled heater is welded are bent so that one edge thereof is directed...
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5172027 |
Wire shaped electron source
A wire shaped electron source includes a heating core wire, an insulator partially provided on the heating core wire, and an electron emission material provided on the heating core between the...
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5158709 |
Electric lamp containing molybdenum material doped wtih aluminum and potassium, molybdenum material for such a lamp, and method of its manufacture
Electrical lamps, particularly halogen lamps subjected to high temperatures and pressures, utilize a molybdenum material as holding wires, current connection leads, connecting foils and the like...
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5130601 |
Quick warm-up cathode heater for high average power magnetrons
An uncoated radiative heating filament wire is electrically and thermally isolated from the cathode of a high power magnetron. The filament wire helically surrounds the cathode support rod and is...
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5072147 |
Low sag tungsten filament having an elongated lead interlocking grain structure and its use in lamps
Improved tungsten coil filaments having good sag resistance and useful in double ended, high intensity and energy efficient tungsten halogen lamps having an IR reflecting filter on the filament...
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4976643 |
Direct-heated cathode structure and method for the fabrication thereof
Method of fabricating a direct-heated cathode structure comprising prepunching process wherein fixing segments are inserted to slot in the ceramic base and bended about 45, and finish punching...
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4939411 |
Composite vacuum evaporation coil
A composite vacuum evaporation coil including a base coil and an overwind coil is characterized by the overwind coil being independent of the power source and being confined to the area of the...
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