15results 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 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.

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 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.

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.

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.

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.