26results about "Cathode ray tubes/electron beam tubes" patented technology

1. A method for controlling a density distribution of electrons provided by an electron source for use in hard x-ray, soft x-ray and / or extreme ultraviolet generation, the method comprising: generating a plurality of electrons from a pattern of ultra-cold excited atoms inside a cavity using an ionizing laser, the electrons having a density distribution determined by at least one of the pattern of excited atoms and the ionizing laser; and accelerating the electrons exiting the cavity using a non-static acceleration profile, the acceleration profile controlling the density distribution of the electrons as they exit the cavity.

The invention discloses a high-adhesion anode fluorescent screen and a manufacturing method thereof, and relates to the technical field of low-light-level image intensifier core component manufacturing, the high-adhesion anode fluorescent screen comprises a fluorescent screen, the fluorescent screen is made of glass or a sapphire substrate, the fluorescent screen is provided with a micropore array structure, the micropore array structure comprises a plurality of micropores arranged in an array, the aperture of each micropore is 5-10 [mu] m, and the diameter of each micropore is 5-10 [mu] m. The hole depth is 3-5 microns, the hole pitch is 1-2 microns, fluorescent powder is filled in each micropore, and the fluorescent powder is made of P43 or P45 fluorescent powder. According to the invention, the micropore array can form an anchoring structure, the fluorescent powder slurry is coated, the holes are filled with the particles and the binder, and the fluorescent powder layer and the substrate are locked; the stripping tendency of the fluorescent powder layer caused by thermal expansion and cold contraction, vibration or external stress is resisted through geometric constraint, and interaction force is generated with internal stress of the fluorescent powder layer, so that adhesion is enhanced; a narrow-band efficient fluorescent material is selected to cooperate with the micropore light regulation effect, the efficient light-emitting characteristic of the fluorescent powder is enhanced, a mature manufacturing process combination is combined, and breakthrough improvement of the performance of the fluorescent screen is achieved.

Indolo[3.2.1-jk]carbazole-6-carbonitrile derivatives of the formula (I) as blue fluorescent emitters in organic electroluminescent devices, more particularly OLEDs.

Embodiments include an apparatus, comprising: a conductive base; an insulating substrate; an electron emitter disposed on the insulating substrate; a grid disposed adjacent to the electron emitter, the grid including a first conductive side and a second conductive side separate from the first conductive side; a plurality of posts; wherein: the first conductive side is attached to the insulating substrate through a first group of the posts; the second conductive side is attached to the insulating substrate through a second group of the posts; and the conductive base is attached to the insulating substrate through a third group of the posts.

The embodiment of the present application relates to a fluorescent screen, comprising: a fluorescent screen part; a first structure layer, the first structure layer is arranged on the fluorescent screen part; the first structure layer comprises a fluorescent powder layer and a filling oxide; the fluorescent powder layer comprises fluorescent powder and bonding oxide, the bonding oxide is used for bonding together between the particles of the fluorescent powder and the surface of the fluorescent screen part; the filling oxide is inorganic material; at least part of the filling oxide is filled in the internal pore of the fluorescent powder layer.

The invention relates to a device for applying accelerated electrons to fluids and the inner walls of hollow bodies, comprising a cylindrical electron exit window (102) as part of a cylindrical housing (101) having a cylindrical axis (103) and enclosing an evacuable space; at least one wire-shaped, strand-shaped, rod-shaped, annular, helical, or cylindrical cathode (104a) arranged within the evacuable space and enclosed by the cylindrical electron exit window (102) and by a cylindrical control grid (104b), wherein the cylindrical control grid (104b) has a diameter smaller than the diameter of the cylindrical electron exit window (102), and wherein a first power supply device is electrically conductive between the wire-shaped, strand-shaped, rod-shaped, annular,a helical or cylindrical cathode (104a) and the cylindrical electron exit window (102) is connected, such that electrons can be emitted from the wire-shaped, strand-shaped, rod-shaped, ring-shaped, helical or cylindrical cathode (104a) and accelerated radially away from the cylinder axis (103) of the cylindrical housing (101) in the direction of the cylindrical electron exit window (102), wherein , a) a first hollow cylinder (107; 307) encloses the cylindrical electron exit window (102) and the first hollow cylinder (107; 307) and the electron exit window (102) are spaced apart from each other, so that a first annular free space is formed between the first hollow cylinder (107; 307) and the electron exit window (102); b) The first support elements (105) of the cylindrical control grid (104b) and the second support elements (106) of the concentrically arranged cylindrical electron exit window (102) run centrally symmetrically to each other along the respective lateral surfaces and are arranged azimuthally within equal angular segments with an angle ω.

Embodiments include an apparatus, comprising: a conductive base; an insulating substrate; an electron emitter disposed on the insulating substrate; a grid disposed adjacent to the electron emitter, the grid including a first conductive side and a second conductive side separate from the first conductive side; a plurality of posts; wherein: the first conductive side is attached to the insulating substrate through a first group of the posts; the second conductive side is attached to the insulating substrate through a second group of the posts; and the conductive base is attached to the insulating substrate through a third group of the posts.

A photocathode epitaxial structure. The photocathode epitaxial structure includes an improved substrate stack. The improved substrate stack includes a GaAs substrate and one or more additional layers formed on the GaAs substrate. The one or more additional layers are configured to provide an improved substrate stack surface with predetermined characteristics for forming a semiconductor device on the improved substrate stack surface. The photocathode epitaxial structure further includes an InGaAs p-type photocathode formed on the improved substrate stack surface. The InGaAs p-type photocathode has a predetermined percentage of In.

A plasma chamber for a UV light source includes a plasma generation region defining a plasma confinement region. A port that allows generated light to be transmitted out of the chamber is positioned adjacent a side of the plasma generation region. A high voltage region is coupled to the plasma generation region. A ground region is coupled to the high voltage region, the ground region defining an outer surface configured to be coupled to ground and dimensioned to receive an enclosing inductor core. A width of the high voltage region is greater than a width of the ground region.

The creation of virtual particles is advantageous due to the high density of allowed energy states in a vacuum, but is a hindrance due to the relatively small number of allowed states in a normal metallic conductor. This difference can be exploited to create a highly efficient electrical energy generator, which is the object of the present invention.SOLUTION: In an electric energy generating device formed of a conductive hollow casing 2 which is made of metal or quartz containing a conductor and connected to a power source 8 for driving an electron gun 30 made of tungsten-hafnium alloy and in which a grid 25 is provided on the electron gun 30, electrons hit a target on the opposite side, and a magnet 4 makes the electrons linearly run toward the target. The housing 2 is grounded until the hollow is saturated, and when saturated, the MOSFET12 prevents the electrons from going to the ground, and a diode 9 guides the electrons to a capacitor 10 and from the capacitor 10 to a load.SELECTED DRAWING: Figure 1

A cathode-ray tube ultraviolet light source includes a metal housing provided with a light-transmissive window, a heatsink disposed within the metal housing, a phosphor having a first surface and an opposing second surface, wherein the second surface of the phosphor is in thermal contact with the heatsink, and an electron gun capable of developing an electron beam to impinge upon the first surface of the phosphor, whereby light emitted from the second surface of the phosphor is directed through the light-transmissive window.

The present invention provides a microchannel plate, a preparation method and application thereof, where the microchannel plate is provided with a large number of channels penetrating in the thickness direction. On one side of an inlet end face of the microchannel plate, a flared end face of each channel is a hexagonal tapered bore; and in a cross-section perpendicular to an axial direction of each channel, the flared end face of the channel has an outer edge that is hexagonal and an inner edge that is circular. The present invention proposes a hexagonal special-shaped flared microchannel plate with an array of micropores having hexagonal tapered bores in the end face and cylindrical inside, where the circles in the form of a hexagonal packed periodic array is replaced with the hexagons in the form of a hexagonal close-packed periodicarray, so that the close-packed coefficient of the channel array of the microchannel plate increases from 0.907 when the existing circular channels are arranged in a hexagonal manner to 1 when the hexagonal channels are arranged in a hexagonal manner, so that when the flared end face channel wall thickness of the channel of the microchannel plate is ≥ 100 nm, an open area ratio of the microchannel plate is ≥ 91%. The present invention significantly improves the open area ratio of the input surface of the microchannel plate, improves the detection efficiency of the microchannel plate for an input signal, while avoiding generation of a flared tip to cause a tip discharge, and thus is more suitable for practical use.

To provide a jig for use in manufacturing a solid-state imaging device comprising a good quality photoelectric conversion film.SOLUTION: A jig 100 for use in manufacturing a solid-state imaging device comprises a first member 111 that has a first opening portion 111H and covers a package 1 and a signal readout circuit substrate 2 assembled on the package 1 and a second member 112H that has a second opening portion 112H in accordance with a film deposition area of a photoelectric conversion film 4 provided on the signal readout circuit substrate 2 and fits on the first opening portion 111H in such a manner as to enclose the film deposition area.SELECTED DRAWING: Figure 2A

A device for extracting ions and / or electrons from a plasma has a grid (1) and a grid holder (2), on the circumference of which the grid (1) is fastened. According to the invention, the grid (1) is configured as an expanded metal grid. The invention further also provides a plasma source, a plasma coating device, and a method for producing an interference layer or interference layer systems.

A plasma chamber for a UV light source includes a plasma generation region that defines a plasma confinement region. A port is positioned adjacent to a side of the plasma generation region that allows generated light to pass out of the chamber. A high voltage region is coupled to the plasma generation region. A grounded region is coupled to the high voltage region that defines an outer surface configured to be coupled to the ground and is dimensioned for receiving a surrounding inductive core. A width of the high voltage region is greater than the width of the grounded region.

A method for controlling a density distribution of electrons provided by an electron source for use in hard X-ray, soft X-ray and / or extreme ultraviolet generation, the method comprising generating a plurality of electrons from a pattern of ultracold excited atoms using an ionization laser inside a cavity, wherein the electrons have a density distribution determined by at least one of the patterns of excited atoms and the ionization laser, and accelerating the electrons out of the cavity using a non-static acceleration profile, wherein the acceleration profile controls the density distribution of the electrons as they exit the cavity.

The utility model discloses a static electricity eliminating device in an evaporation process, which is applied to a vacuum environment and comprises an electron emission assembly, a static electricity eliminating assembly and a static electricity eliminating assembly, the accelerating electric field is used for accelerating the electron beam to bombard residual gas particles in vacuum so as to generate positive ions and negative charges, and the screening magnetic field is used for screening and neutralizing the positive ions and the negative charges in the environment and is in contact with static electricity so as to realize static electricity neutralization; wherein the electron emission assembly is a carbon nano fiber emitter, the carbon nano fiber emitter is provided with a carbon nano coating, and the carbon nano fiber emitter is used as an emission source to enable electrons to penetrate through the potential barrier and emit the electrons. The difficulty that electrons pass through a potential barrier is obviously reduced, and the stability and reliability of electron emission are improved.

Disclosed is a surgical instrument comprising a housing, a shaft extending from the housing, a controller comprising a processor, an end effector comprising a jaw comprising a metal wall antenna, an antenna circuit mounted to the metal wall antenna in communication with the processor, and a staple cartridge comprising a cartridge body mounted to the jaw, staples removably stored within the cartridge body, and a signal emitter configured to emit a wireless signal.

A particle accelerator includes a waveguide comprising a series of accelerating units. The series of accelerating units includes an input accelerating unit configured to accelerate an electron beam along a central axis of the unit. An electron source is configured to input the electron beam into the input accelerating unit, and a magnet arrangement is configured to prevent electrons that have deviated from the electron beam from impacting the electron source.

The device for extracting ions and / or electrons from a plasma comprises a grid (1) and a grid holder (2) around which the grid (1) is fixed. According to the invention, the grid (1) is configured as an expanded metal grid. The invention also provides a plasma source, a plasma coating device, and a method for manufacturing an interference layer or an interference layer system.

The invention relates to a glass electronic tube core column and glass bulb sealing device and a sealing method thereof, the device comprises a hollow stand column and a shaft sleeve which are arranged on a rack, a transmission shaft is arranged in the hollow stand column, a hollow support is arranged at the upper end of the hollow stand column, an upper vertical shaft is arranged in the hollow support, and an air cylinder is arranged at the upper end of the hollow support; the output end is coaxially connected with the upper end of the upper vertical shaft; a power source is arranged in the rack, and the output end of the power source is coaxially connected with the lower end of the transmission shaft; a drill chuck is arranged at the lower end of the upper vertical shaft; a lower vertical shaft is arranged in the shaft sleeve; the power source output end is in transmission connection with the shaft sleeve; a swing arm is hinged in the rack, one end of the swing arm is clamped with a self-aligning ball bearing arranged at the lower end of the lower vertical shaft, and the other end of the swing arm is connected with a left pedal; a supporting seat is sleeved on the supporting sleeve at the upper end of the lower vertical shaft; a first support arm and a second support arm are hinged on the rack, and flame nozzles are respectively arranged at the upper ends of the first support arm and the second support arm. The device can improve the yield, ensure the sealing quality and reduce the production cost.

The invention provides a semiconductor device and a preparation method thereof, and the method comprises the steps: providing a silicon substrate, etching the silicon substrate to form a plurality of grooves, and enabling the silicon substrate between two adjacent grooves to serve as a cathode; a stress layer is formed to fill the groove so as to apply stress to the cathode, when the conduction type of the silicon substrate is N type, the stress layer applies compressive stress to the cathode, and when the conduction type of the silicon substrate is P type, the stress layer applies tensile stress to the cathode; sequentially forming an insulating layer and a metal layer to cover the cathode and the stress layer; etching the metal layer to form a plurality of first openings penetrating through the metal layer; the insulating layer is etched along the first openings to form a plurality of second openings penetrating through the insulating layer, the second openings expose part of the surface of the side, close to the anode, of the cathode, and the exposed cathode serves as an emitter of the cathode. The surface electron emission characteristic of the emitter of the cathode can be inhibited, so that the performance of the semiconductor device is regulated and controlled.

A photodetector capable of accurately and easily positioning a sample at the focal position of a predetermined measuring light beam is provided. [Solution] The photodetector 100 includes a photodetector having an electron emitter 3 including a metasurface 32 that emits electrons in response to incidence of electromagnetic waves W, and an electron multiplier 4 that multiplies the electrons emitted from the electron emitter 3, and a voltage application unit 2 that applies a voltage to an application target that includes at least one of the metasurface 32 and the electron multiplier 4. The voltage application unit 2 applies a voltage to the application target so that the potential on the metasurface side of the electron multiplier 4 is equal to or lower than the potential of the metasurface 32, so as to allow first electrons field-emitted in response to incidence of electromagnetic waves W on the metasurface 32 to reach the electron multiplier 4, while preventing second electrons generated due to factors other than incidence of the electromagnetic waves W on the metasurface 32 from reaching the electron multiplier 4.

The present invention provides a photodetector that can accurately and easily position a sample at the focal point of a predetermined measurement light. [Solution] The photodetector 100 includes a photodetector having an electron emission unit 3 including a metasurface 32 that emits electrons in response to the incidence of electromagnetic waves W, and an electron multiplication unit 4 that multiplies the electrons emitted from the electron emission unit 3, and a voltage application unit 2 that applies a voltage to an object to be applied to, which includes at least one of the metasurface 32 and the electron multiplication unit 4. The voltage application unit 2 applies a voltage to the object to be applied to such that the potential on the metasurface side of the electron multiplication unit 4 is less than or equal to the potential of the metasurface 32, so as to allow first electrons, which are field-emitted in response to the incidence of electromagnetic waves W to the metasurface 32, to reach the electron multiplication unit 4, while preventing second electrons, which are generated due to factors other than the incidence of electromagnetic waves W to the metasurface 32, from reaching the electron multiplication unit 4.

This light detection device comprises: a light detection unit that is provided with an electron emission unit that includes a metasurface which emits electrons in response to the incidence of electromagnetic waves, and an electron multiplication unit that multiplies the electrons emitted from the electron emission unit; and a voltage application unit that applies a voltage to an application target including at least one among the metasurface and the electron multiplication unit. In order to allow first electrons, which are field-emitted in response to the incidence of electromagnetic waves on the metasurface, to reach the electron multiplication unit while preventing second electrons, which are generated due to a factor other than the incidence of electromagnetic waves on the metasurface, from reaching the electron multiplication unit, the voltage application unit applies a voltage to the application target such that the electric potential on the metasurface side of the electron multiplication unit is equal to or lower than the electric potential of the metasurface.