A thickness of a bonding material (8) is varied in a radial direction orthogonal to a central axis (P) of the tubular anode member (6), the bonding material (8) being used for bonding a transmitting substrate (7) for supporting a target layer (9) and a tubular anode member (6) in a direction along the central axis (P). Thus, a region in which a circumferential tensile stress of the bonding material (8) is alleviated is formed in the direction along the central axis (P) to prevent a crack from developing in the bonding material (8).

Disclosed is an x-ray tube including a hybrid electron emission source, which uses, as an electron emission source, a cathode including both a field electron emission source and a thermal electron emission source. An x-ray tube includes an electron emission source emitting an electron beam, and a target part including a target material that emits an x-ray as the emitted electron beam collides with the target part, wherein the electron emission source includes a thermal electron emission source and a field electron emission source, and emits the electron beam by selectively using at least one of the thermal electron emission source and the field electron emission source.

Disclosed are a cartridge-type X-ray source apparatus and an X-ray emission apparatus using the same. The X-ray source includes: a cathode electrode provided with an electron emission source by using a nanostructure; an anode electrode having a target emitting X-rays by electron collision; and a housing forming an external appearance, and exposing a cathode electrode terminal connected to the cathode electrode and an anode electrode terminal connected to the anode electrode to an outside thereof, wherein the cathode electrode terminal and the anode electrode terminal differ from each other in at least one of exposure direction, height, size, and shape.

Disclosed is a high-voltage X-ray tank with a miniaturized shielding structure which includes an X-ray shielding part having a cylindrical structure in which an X-ray tube for radiating X-rays is accommodated and an X-ray radiation port is formed in one side surface thereof, a main block body having a box-shaped structure in which the X-ray shielding part is mounted on one side surface thereof and which is electrically connected to the X-ray shielding part, and a lens part having a structure which is mounted on the one side surface of the X-ray shielding part and focuses X-rays radiated through the X-ray radiation port on a preset position. According to the present invention, the high-voltage X-ray tank, in which insulating and shielding performance is improved and which has an ultra-small and ultra-light-shielding structure based on the improved insulating and shielding performance, can be provided.

Disclosed is a high-voltage X-ray tank with a miniaturized shielding structure which includes an X-ray shielding part having a cylindrical structure in which an X-ray tube for radiating X-rays is accommodated and an X-ray radiation port is formed in one side surface thereof, a main block body having a box-shaped structure in which the X-ray shielding part is mounted on one side surface thereof and which is electrically connected to the X-ray shielding part, and a lens part having a structure which is mounted on the one side surface of the X-ray shielding part and focuses X-rays radiated through the X-ray radiation port on a preset position. According to the present invention, the high-voltage X-ray tank, in which insulating and shielding performance is improved and which has an ultra-small and ultra-light-shielding structure based on the improved insulating and shielding performance, can be provided.

A vacuum tube insert assembly includes a flared insert piece having an annular flange and a stem each constructed of glass. The stem extends axially from the flange. The flange surrounds a perimeter edge of a plug concavity defined by the stem. Feed-through pins pass axially through the stem and are sealed thereto. The pins terminate inside of the concavity to form a plug. A socket connects to the plug within the concavity and includes receptacles that removably couple to the pins, with an engagement feature preventing erroneous plug and socket connections. A method includes axially inserting the pins through the stem at a fixed relative position such that the pins are arranged within the plug concavity, sealing the stem such that the stem is vacuum-sealed to the pins, thereby forming the plug, and removably coupling mating receptacles of the socket to the pins.

A vacuum tube insert assembly includes a flared insert piece having an annular flange and a stem each constructed of glass. The stem extends axially from the flange. The flange surrounds a perimeter edge of a plug concavity defined by the stem. Feed-through pins pass axially through the stem and are sealed thereto. The pins terminate inside of the concavity to form a plug. A socket connects to the plug within the concavity and includes receptacles that removably couple to the pins, with an engagement feature preventing erroneous plug and socket connections. A method includes axially inserting the pins through the stem at a fixed relative position such that the pins are arranged within the plug concavity, sealing the stem such that the stem is vacuum-sealed to the pins, thereby forming the plug, and removably coupling mating receptacles of the socket to the pins.

According to one embodiment, an X-ray tube includes a vacuum enclosure in which an output window which transmits X-rays is formed, an anode target provided in the vacuum enclosure so as to oppose the output window, a cathode filament provided in the vacuum enclosure, that emits electrons to be irradiated onto the anode target, a power feed section to which a high voltage cable is connected, and an insulating portion that covers the power feed section and the high-voltage cable with an insulating material, and the power feed section includes a contact surface with which a distal end surface of the high-voltage cable is brought into contact, and an angle formed by the contact surface and the side surface of the high-voltage cable is an acute angle.