Abstract: According to one embodiment, an X-ray tube includes a vacuum enclosure that maintains a vacuum inside, a cathode provided in the vacuum enclosure, which emits an electron beam, an anode target provided in the vacuum enclosure, which emits an X-ray when the electron beam emitted from the cathode enters a focal plane of the anode target, and an X-ray radiation window that allows the X-ray emitted from the focal plane of the anode target to pass therethrough, and the X-ray radiation window comprises a window member and a support for the window member, the vacuum enclosure includes a joint portion formed thereon to be joined to the support and protrude toward an outer side of the vacuum enclosure, and the support comprises a covering portion that covers an inner circumferential surface of the joint portion.

Abstract: According to one embodiment, an analytical X-ray tube includes a vacuum enclosure with an output window to transmit X-rays, an anode target provided in the vacuum enclosure and opposing the output window, an anode support that supports the anode target. The anode support includes a distal end portion an outer diameter of which is smaller than an outer diameter of the anode target, and a rear side portion on a rear side of the distal end portion, an outer diameter of which is greater than the outer diameter of the anode target, and an outer surface of the rear portion is coated with a coating layer of a same material as that of the anode target.

Abstract: According to one embodiment, an x-ray tube includes a cathode and an anode. The cathode includes a filament coil and a focusing electrode that includes a valley bottom part, a first inclined plane rising from the valley bottom part and inclined in the direction of the anode, a first focusing groove, and a first receiving groove. The anode includes a target surface. ?1>0°. The filament coil, the first receiving groove, and the first focusing groove are positioned more to a third extended line side than a first reference plane. One end part of the first receiving groove is closer to the first reference plane than the other end part.

Abstract: According to one embodiment, an x-ray tube includes a cathode and an anode. The cathode includes a filament coil and a focusing electrode that includes a valley bottom part, a first inclined plane rising from the valley bottom part and inclined in the direction of the anode, a first focusing groove, and a first receiving groove. The anode includes a target surface. ?1>0°. The filament coil, the first receiving groove, and the first focusing groove are positioned more to a third extended line side than a first reference plane. One end part of the first receiving groove is closer to the first reference plane than the other end part.

Abstract: According to one embodiment, an X-ray tube includes a cathode including a filament, an anode target, and an envelope. The cathode includes a metal lead wire supporter which is exposed outside the envelope, which is configured as a part of the envelope, and to which a lead wire as a power supplier to the filament is attached such that the lead wire passes both inside and outside of the envelope, and a metal filament supporter fixed on the lead wire supporter, being in contact with the lead wire supporter, and supporting the filament.

Abstract: An X-ray tube device in one embodiment has an X-ray tube and a container storing the X-ray tube, filled with insulating oil, and having an X-ray emission window. The X-ray tube includes a cylindrical glass envelope holding an anode and a cathode opposite to each other and keeping them in vacuum, and an insulating tube fit over the glass envelope and having an X-ray transmission section. The insulating tube has a base section attached to the container. The base section defines a space communicating between the X-ray transmission section of the insulating tube and the X-ray emission window of the container, and has a container-side end fixed to the container in a liquid-tight manner.

Abstract: According to one embodiment, an X-ray tube includes a cathode including a filament, an anode target, and an envelope. The cathode includes a metal lead wire supporter which is exposed outside the envelope, which is configured a part of the envelope, and to which a lead wire as a power supplier to the filament is attached such that the lead wire passes both inside and outside of the envelope, and a metal filament supporter fixed on the lead wire supporter, being in contact with the lead wire supporter, and supporting the filament.

Abstract: An X-ray tube device in one embodiment has an X-ray tube and a container storing the X-ray tube, filled with insulating oil, and having an X-ray emission window. The X-ray tube includes a cylindrical glass envelope holding an anode and a cathode opposite to each other and keeping them in vacuum, and an insulating tube fit over the glass envelope and having an X-ray transmission section. The insulating tube has a base section attached to the container. The base section defines a space communicating between the X-ray transmission section of the insulating tube and the X-ray emission window of the container, and has a container-side end fixed to the container in a liquid-tight manner.

Abstract: An X-ray tube has a cathode, an anode target to emit X-rays, and a vacuum envelope which houses the cathode and the anode target. The vacuum envelope has a first metal member connected to the anode target, a second metal member which is connected to the first metal member and has a coefficient of thermal expansion lower than that of the first metal member, and an electrically insulating annular ceramic member connected to the second metal member and the cathode. In addition, the X-ray tube has a cooling system which is connected to the first metal member and forms a cooling passage. Furthermore, the X-ray tube has an adapter which is in contact with the first metal member, surrounds the second metal member and has a thermal conductivity higher than that of the second metal member, and a heat-transfer medium placed between the ceramic member and the adapter.

Abstract: An X-ray tube has a cathode, an anode target to emit X-rays, and a vacuum envelope which houses the cathode and the anode target. The vacuum envelope has a first metal member connected to the anode target, a second metal member which is connected to the first metal member and has a coefficient of thermal expansion lower than that of the first metal member, and an electrically insulating annular ceramic member connected to the second metal member and the cathode. In addition, the X-ray tube has a cooling system which is connected to the first metal member and forms a cooling passage. Furthermore, the X-ray tube has an adapter which is in contact with the first metal member, surrounds the second metal member and has a thermal conductivity higher than that of the second metal member, and a heat-transfer medium placed between the ceramic member and the adapter.

Abstract: According to one embodiment, a distance from an X-ray tube central axis to an outer side surface of a cathode electron gun in a direction perpendicular to the longitudinal direction of a filament coil is made less than a distance from the X-ray tube central axis to an outer side surface of the cathode electron gun in the longitudinal direction of the filament coil, and a distance from the X-ray tube central axis to an X-ray radiation window in the direction perpendicular to the longitudinal direction of the filament coil is made less than a distance from the X-ray tube central axis to an X-ray radiation window in the longitudinal direction of the filament coil.

Abstract: A transfer pulse generator circuit for outputting a vertical register transfer pulse includes transfer pulse control circuit for controlling to set rise and fall timings of the vertical register transfer pulse to desired timings in a predetermined period.

Abstract: According to one embodiment, a distance from an X-ray tube central axis to an outer side surface of a cathode electron gun in a direction perpendicular to the longitudinal direction of a filament coil is made less than a distance from the X-ray tube central axis to an outer side surface of the cathode electron gun in the longitudinal direction of the filament coil, and a distance from the X-ray tube central axis to an X-ray radiation window in the direction perpendicular to the longitudinal direction of the filament coil is made less than a distance from the X-ray tube central axis to an X-ray radiation window in the longitudinal direction of the filament coil.

Abstract: A transfer pulse generator circuit for outputting a vertical register transfer pulse includes transfer pulse control circuit for controlling to set rise and fall timings of the vertical register transfer pulse to desired timings in a predetermined period.

Abstract: A circuit for generating a timing signal, the circuit having a memory and a pulse generator, the timing signal consisting of a number of pulses. The memory stores pulse count data, including an indication of the number of pulses in the timing signal, and rising edge and falling edge position data of the timing signal. The pulse generator produces the timing signal in accordance with the pulse count data and has a first circuit for generating rising edge signals, a second circuit for generating falling edge signals, an active control circuit for setting, in correspondence only with the pulse count data, corresponding rising edge signals as active state rising edge signals, and corresponding falling edge signals as active state falling edge signals, and a third circuit for generating said timing signal corresponding to the active state rising edge signals and the active state falling edge signals.

Abstract: A transfer pulse generator circuit for outputting a vertical register transfer pulse includes transfer pulse control means for controlling to set rise and fall timings of the vertical register transfer pulse to desired timings in a predetermined period.

Abstract: An X-ray tomograph comprises an X-ray generator having a function of moving the focal position and radiating X-rays toward a subject, an X-ray image receiving element for receiving transmission images created by X-rays radiated from the X-ray generator, and an image processing section for creating a tomographic image by processing the transmission images of the subject received by the X-ray image receiving element. A stereoradioscopic image constructing equipment comprises the X-ray tomograph and a stereoradioscopic image constructing section for creating a stereoradioscopic image by subjecting the created tomographic images to image processing. By using the X-ray tomograph, a tomographic image can be created without providing any high-precision movable mechanism, and a tomographic image of even a soft subject can be correctly created.

Abstract: There is provided a signal generator which includes a main memory which stores at least time data indicating timing when a state change of a timing pulse occurs and space data indicating a state of the timing pulse corresponding to the time data; a counter which counts a clock to be a reference; a first memory which stores predetermined time data in time data stored in the main memory; a comparator which compares an output of the counter with the predetermined time data stored in the first memory and to output a result; a second memory which stores predetermined space data in space data stored in the main memory; and output signal control means which controls the timing pulse to a state of the timing pulse indicated by the space data stored in the second memory on the basis of an output of the comparator.

Abstract: An X-ray tomograph comprises an X-ray generator having a function of moving the focal position and radiating X-rays toward a subject, an X-ray image receiving element for receiving transmission images created by X-rays radiated from the X-ray generator, and an image processing section for creating a tomographic image by processing the transmission images of the subject received by the X-ray image receiving element. A stereoradioscopic image constructing equipment comprises the X-ray tomograph and a stereoradioscopic image constructing section for creating a stereoradioscopic image by subjecting the created tomographic images to image processing. By using the X-ray tomograph, a tomographic image can be created without providing any high-precision movable mechanism, and a tomographic image of even a soft subject can be correctly created.

Abstract: A transfer pulse generator circuit for outputting a vertical register transfer pulse includes transfer pulse control means for controlling to set rise and fall timings of the vertical register transfer pulse to desired timings in a predetermined period.