TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. Patent applications |
Patent application number | Title | Published |
20160116607 | RADIATION DETECTOR, SCINTILLATOR PANEL, AND METHOD FOR MANUFACTURING THE SAME - According to the embodiment, a radiation detector includes a photoelectric conversion substrate converting light to an electrical signal and a scintillator layer being in contact with the photoelectric conversion substrate and converting externally incident radiation to light. The scintillator layer is made of a phosphor containing Tl as an activator in CsI, which is a halide. A concentration of the activator in the phosphor is 1.6 mass %±0.4 mass %, and a concentration distribution of the activator in an in-plane direction and a film thickness direction is within ±15%. | 04-28-2016 |
20160029468 | ROTATION ANODE X-RAY TUBE UNIT AND ROTATION ANODE X-RAY TUBE ASSEMBLY - A rotation anode X-ray tube unit includes a rotation anode X-ray tube, a flow-passage formation member, and a X-ray shielding section. The X-ray shielding section includes an X-ray shield and a frame-shaped X-ray shielding member. | 01-28-2016 |
20150362602 | SCINTILLATOR PANEL AND MANUFACTURING METHOD THEREFOR AND RADIATION DETECTOR AND MANUFACTURING METHOD THEREFOR - A scintillator panel is provided with a substrate which transmits radiation ray and a phosphor layer which is present on the surface of the substrate and which is made of a thallium-activated cesium iodide that can convert an incident radiation to visible light. The phosphor layer is covered with a moisture-proof film. The phosphor layer is an alternating laminate composed of high thallium concentration layers and low thallium concentration layers that have a thallium concentration lower than that of the high-thallium concentration layers, wherein the thickness of one thallium concentration cycle in the lamination direction is 40 nm or less. | 12-17-2015 |
20150162163 | X-RAY TUBE AND METHOD OF MANUFACTURING THE SAME - According to one embodiment, an X-ray tube includes an envelope with an opening, an X-ray transmission assembly mounted on the envelope and vacuum-tightly blocking the opening, a cathode and an anode target. The X-ray transmission assembly includes a window frame, an X-ray transmission window, an X-ray-resistive resin film, a sealing member and a dry gas. The X-ray transmission window is formed of a beryllium thin plate, accommodated in the window frame, and configured to maintain, along with the window frame, a vacuum-tight state inside the envelope. The X-ray-resistive resin film forms a space inside along with the window frame and the X-ray transmission window. The dry gas fills the space. | 06-11-2015 |
20150124936 | ROTATING-ANODE X-RAY TUBE ASSEMBLY - According to one embodiment, a rotating-anode X-ray tube assembly includes a rotating-anode X-ray tube, a housing, a coolant, a first shell, an X-ray shielding member, a second shell and an air introduction unit. The first shell is provided apart from the housing and an envelope of the rotating-anode X-ray tube, and surrounds the envelope. The X-ray shielding member is provided between the first shell and the housing and apart from the housing. The second shell is provided apart from the housing to cause an airway to be formed between the second shell and the housing. The air introduction unit produces a flow of air in the airway. | 05-07-2015 |
20150117617 | X-RAY TUBE - According to one embodiment, an X-ray tube includes an anode target, a cathode including a filament and a convergence electrode which includes a groove portion, and an envelope. The groove portion includes a pair of first bottom surfaces which are located in the same plane as the filament and between which the filament is interposed in a width direction of the groove portion, and a pair of second bottom surfaces between which the filament and the pair of first bottom surfaces are interposed in a length direction of the groove portion and which are located closer to an opening of the groove portion than the pair of first bottom surfaces. | 04-30-2015 |
20150078531 | ROTATING-ANODE X-RAY TUBE ASSEMBLY AND ROTATING-ANODE X-RAY TUBE APPARATUS - According to one embodiment, a rotating-anode X-ray tube assembly includes an X-ray tube, a stator coil, a housing, an X-ray radiation window, and a coolant. The housing includes a first divisional part which includes an X-ray radiation port and to which the X-ray tube is directly or indirectly fixed, and a second divisional part located on a side opposite to an anode target with respect to an anode target rotating mechanism and coupled to the first divisional part. A coupling surface between the first divisional part and the second divisional part is located on one plane, and is inclined to an axis, with exclusion of a direction perpendicular to the axis. | 03-19-2015 |
20150028338 | METHOD FOR MANUFACTURING X-RAY FLAT PANEL DETECTOR AND X-RAY FLAT PANEL DETECTOR TFT ARRAY SUBSTRATE - A common interconnect ring is provided at a periphery of a portion used to form a TFT array of an X-ray flat panel detector, and an X-ray flat panel detector TFT array substrate connected to signal lines and scanning lines via pairs of two protection diodes connected in parallel and having mutually-reverse polarities is manufactured. When inspecting the X-ray flat panel detector TFT array substrate, the same reference bias voltage as the amplifier of a detection circuit is applied from an external voltage application pad provided at the vicinity of a connection unit for the common interconnect ring and the protection diodes on the same side of the signal lines, a signal is provided to a scanning line connection pad to switch the thin film transistor ON, and an electrical signal flowing through the signal line is read from a signal line connection pad. | 01-29-2015 |
20140321620 | X-RAY TUBE AND ANODE TARGET - According to one embodiment, an X-ray tube including an electron emission source which emits an electron, an anode target which comprises a target layer emitting an X-ray by the electron from the electron emission source, and a substrate supporting the target layer and composed from a carbide-strengthened molybdenum alloy, an evacuated outer surrounding envelope which contains the electron emission source and the anode target, a diffusion barrier layer which is integrally formed with the substrate by a powder metallurgy method on a part of a top surface of the substrate and is composed of a high-melting-point metal lacking of carbon-element content compared with carbon-element content in the substrate, and a thermal radiation film which is formed on at least a part of a top surface of the diffusion barrier layer and composed of metallic oxide. | 10-30-2014 |
20140314197 | X-RAY TUBE ASSEMBLY AND X-RAY COMPUTERIZED TOMOGRAPHY SCANNER - According to one embodiment, an X-ray tube assembly includes a housing, an X-ray tube, a coolant to which at least a part of heat generated by the X-ray tube is transferred, a circulation channel through which the coolant is circulated, a circulation pump, a radiator, an air filter and a fan unit. The air filter is formed of a three-dimensional nonwoven fabric that is formed of irregularly tangled resin fibers and provides a three-dimensional structure having a spatial volume ratio of not less than 93%. The air filter permits air to pass therethrough to eliminate dust from the air. | 10-23-2014 |
20140295062 | APPARATUS AND METHOD OF MANUFACTURING RADIATION DETECTION PANEL - According to one embodiment, an apparatus of manufacturing a radiation detection panel, includes an evaporation source configured to evaporate a scintillator material and emit the scintillator material vertically upward, a holding mechanism located vertically above the evaporation source, and holding a photoelectric conversion substrate, and a heat conductor arranged opposite to the holding mechanism with a gap. | 10-02-2014 |
20140247922 | ROTATING ANODE X-RAY TUBE - According to one embodiment, a rotating anode X-ray tube includes a fixed shaft, a rotor, a lubricant, target, and a supporting member. The fixed shaft includes a small-diameter portion provided with a first radial bearing surface including first grooved surfaces, and a large-diameter portion provided with a second radial bearing surface including second grooved surfaces. The rotor includes a third radial bearing surface. The lubricant is filled in a gap between the fixed shaft and the rotor, and drawn by the first and second grooved surfaces. | 09-04-2014 |
20140217296 | COMPOSITION FOR REFLECTIVE FILM, REFLECTIVE FILM, AND X-RAY DETECTOR - Provided is a composition for reflective film comprising a polyvinyl acetal resin, an epoxidized vegetable oil, a solvent, a coupling agent and titanium oxide. | 08-07-2014 |
20140084161 | RADIATION DETECTION DEVICE - According to one embodiment, a radiation detection device includes a chassis, a radiation detection panel, a support plate and a circuit board. The chassis includes an incident face cover and a side face portion covering a side face perpendicular to the incident face cover. The radiation detection panel is housed inside the chassis and is configured to detect radiation incident through the incident face cover. The support plate is housed inside the chassis and is fixed to the side face portion to support the radiation detection panel on a rear face on an opposite side to an incident face of the radiation. The circuit board is housed inside the chassis and is disposed on an opposite side to the radiation detection panel of the support plate. At least a part of a drive circuit configured to drive the radiation detection panel is mounted on the circuit board. | 03-27-2014 |
20130313667 | Radiation Detector - According to one embodiment, a radiation detector includes a substrate, a scintillator layer, a moisture-proof body and an adhesive layer. The substrate is partitioned into at least an active area and a bonding area. The substrate includes a photoelectric conversion element located in the active area and configured to convert fluorescence to an electrical signal, an organic resin protective layer located at an outermost layer in the active area, and an inorganic protective film located at an outermost layer of the bonding area. The scintillator layer is formed on the organic resin protective layer so as to cover the photoelectric conversion element and configured to convert radiation to the fluorescence. The moisture-proof body is formed so as to cover the scintillator layer. The adhesive layer is formed on the inorganic protective film and bonds the moisture-proof body to the substrate. | 11-28-2013 |
20120267539 | Radiation Detector and Method for Manufacturing Same - According to one embodiment, a radiation detector comprises an array substrate having thereon a photoelectric conversion element for converting fluorescence into an electrical signal and having the outermost layer covered with a protective film, a scintillator layer provided on the protective film and converting incident radiation into fluorescence, and a reflective layer filmed by coating and drying paste-like material containing light-scattering particles and a binder provided on the scintillator layer, wherein the protective film is made of a thermoplastic resin having a softening point not higher than the film formation temperature of the scintillator layer and extending on the array substrate over an area of the reflective layer. | 10-25-2012 |
20120207279 | X-RAY TUBE - 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. | 08-16-2012 |
20110211673 | RADIATION DETECTION APPARATUS AND RADIOGRAPHIC APPARATUS - According to one embodiment, a radiation detection apparatus includes a radiation detection panel, a support member that is configured to support the radiation detection panel on one surface thereof and has electrical conductive property, a circuit board that is supported on the other surface of the support member, a flexible circuit board configured to electrically connect the radiation detection panel to the circuit board, a heat insulation member arranged between the radiation detection panel and the circuit board, a housing that is configured to accommodate the radiation detection panel, the circuit board, the support member, and the heat insulation member and has electrical conductive property, and a heat conduction member that is accommodated in the housing, connected to the support member and the housing, and configured to achieve electrical conduction between the support member and the housing to conduct heat of the support member to the housing. | 09-01-2011 |
20110114847 | COMPOSITION FOR REFLECTIVE FILM, REFLECTIVE FILM, AND X-RAY DETECTOR - Provided is a composition for reflective film comprising a polyvinyl acetal resin, an epoxidized vegetable oil, a solvent, a coupling agent and titanium oxide. | 05-19-2011 |
20110058654 | ROTARY ANODE X-RAY TUBE - A rotary anode X-ray tube apparatus according to an embodiment of the present invention includes a stationary shaft, a cooling bath that is provided in the stationary shaft, a rotary cylinder that is rotatably supported to the stationary shaft, a target that is provided in the rotary cylinder, a cathode that is disposed to face the target, and a vacuum enclosure that stores these components. The stationary shaft has a large-diameter portion provided in a portion thereof and is provided with a flow passage through which a cooling fluid flows. The cooling bath is provided by thinning the wall thickness of the large-diameter portion to increase the flow passage diameter of a portion of the flow passage. The rotary cylinder covers an area of the stationary shaft including the large-diameter portion through a liquid metal and is rotatably supported to the stationary shaft. The target has a hollow circular plate shape that is provided on an outer circumferential surface of the rotary cylinder. The vacuum enclosure stores the stationary shaft, the rotary cylinder, the target, and the cathode and supports the stationary shaft. | 03-10-2011 |
20100278308 | X-RAY TUBE - 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. | 11-04-2010 |
20100224785 | RADIATION DETECTOR - According to one embodiment, a radiation detector includes a photodetector including a fluorescent film configured to convert radiation into light, and a photoelectric conversion element configured to convert light into an electrical signal, a circuit board configured to electrically drives the photodetector, and electronically processes an output signal from the photodetector, and a connection board configured to electrically connect the photodetector and circuit board, and including a flexible circuit board, and an IC mounting board connected to the flexible circuit board, less flexible than the flexible circuit board, and including an IC semiconductor element. | 09-09-2010 |
20100224784 | RADIATION DETECTOR AND METHOD FOR PRODUCING THE SAME - According to one embodiment, a radiation detector includes, a substrate, a scintillator layer, a moistureproof body, and an adhesion layer. The substrate comprises a photoelectric conversion element. The scintillator layer is formed on the substrate and converts radiation into fluorescence. The moistureproof body comprises a flange portion in a periphery thereof, the moistureproof body being deep enough to contain at least the scintillator layer. The adhesion layer causes the substrate and the flange portion of the moistureproof body to adhere to each other in a sealed manner. | 09-09-2010 |
20100116997 | RADIATION DETECTOR AND METHOD FOR MANUFACTURING THE SAME - A radiation detector characterized by includes a photoelectric conversion element, a scintillation layer which converts radioactive rays to fluorescence, the scintillation layer being formed on the photoelectric conversion element, and a reflective film formed on the scintillation layer, the reflective film containing light-scattering particles for reflecting the fluorescence from the scintillation layer and a binder material binding the light-scattering particles, and having depletion portions without being filled with the binder material, the depletion portions being formed in a periphery of the light-scattering particles. | 05-13-2010 |
20100019162 | RADIATION DETECTOR - In a radiation detector in which scintillator layers are directly formed on all the light receiving parts of a plurality of photoelectric conversion substrates, space and level difference between the adjacent photoelectric conversion substrates are determined so that the effects of these space and level difference fall within a range corresponding to the effect of one photoelectric conversion element. Specifically, the space between the adjacent photoelectric conversion substrates is equal to or less than 133 μm and the level difference between the adjacent photoelectric conversion substrates is equal to or less than 100 μm. Accordingly, the scintillator layers can be directly formed on all the light receiving parts of the plurality of photoelectric conversion substrates. This prevents degradation in MTF and sensitivity and reduces manufacturing costs. | 01-28-2010 |
20100006762 | SCINTILLATOR PANEL AND RADIATION DETECTOR - A reflective resin sheet is bonded to one face of a supporting substrate transmitting a radiation ray and a resin sheet of the same material as that of the reflective resin sheet to the other face of the supporting substrate. A phosphor layer converting a radiation ray into visible light is formed additionally on the reflective resin sheet formed on one face of the supporting substrate. The phosphor layer is enclosed with an additional moisture-proof layer and the reflective resin sheet. It is possible to obtain a scintillator panel higher in sensitivity characteristics, stabilized in quality and more cost-effective by placing the reflective resin sheet between the supporting substrate and the phosphor layer. | 01-14-2010 |
20090159809 | PROPORTIONAL COUNTER TUBE - The gas filled in an envelope contains nitrogen and hydrogen. The nitrogen used as a supplementary gas is not polymerized even when radiation is applied to it, and serves to achieve higher resolution than in the case where carbon dioxide is used as the supplementary gas. The hydrogen can reduce the change of gas gain. | 06-25-2009 |
20090127466 | RADIATION DETECTION APPARATUS - A radiation detection apparatus includes a radiation detection panel having a fluorescent film and photoelectric conversion elements, a support board for supporting the radiation detection panel, and a gel member displaced between the radiation detection panel and support board. | 05-21-2009 |
20090080612 | RADIATION SPECTRUM MEASURING SYSTEM - According to an aspect of the invention, a radiation spectrum measuring system for measuring a radiation spectrum by using a radiation detection element includes, a radiation spectrum measuring unit for measuring a radiation spectrum by obtaining a pulse signal output from the radiation detection element as data, and a rise time detection unit which detects a rise time of the pulse signal, compares the detected rise time with a preset value, and causes the radiation spectrum measuring unit to exclude from data a pulse signal with a rise time longer than the preset value. | 03-26-2009 |
20090050817 | RADIAL RAY DETECTOR AND METHOD FOR MANUFACTURING THE SAME - A light receiving section and a substrate-side electrode pad of a photoelectric conversion substrate, a base-side electrode pad and an interconnect arranged on a surface side of a base are integrally coated with a protective layer. A scintillation layer is formed on a surface side of the protective layer. Corrosion of a photoelectric conversion element of the light receiving section, the electrode pads and the interconnect is prevented by the protective layer. When they are integrally coated with the protective layer, the light receiving section and the substrate-side electrode pad of the photoelectric conversion substrate can be arranged with a distance therebetween shortened, thereby realizing miniaturization of a detector and enlargement of the light receiving section. | 02-26-2009 |
20090034821 | RADIATION IMAGE PROCESSING DEVICE - A radiation image processing device comprises a noise component extraction part which extracts a noise component from a radiation image, a line-shaped noise component extraction part which extracts a line-shaped noise component from the noise component extracted by the noise component extraction part, and a line-shaped noise component subtraction part which subtracts the line-shaped noise component, extracted by the line-shaped noise component extraction part, from the radiation image. | 02-05-2009 |
20080304624 | X-RAY SOURCE - A transmission target of a vacuum container is operable to have a ground potential and an electro-optical system is floated at a positive potential in the vacuum container. An electron beam, which is converged by means of the electro-optical system, is decelerated immediately before the electron beam is incident to the transmission target. The electron beam has energy that is several times of the final set value until the electron beam passes through the electro-optical system, and a divergence action exerted by a spatial electric charge effect is reduced. Color aberration of the electro-optical system is proportional to energy of the electron beam. Thus, if the electron beam is decelerated after the electron beam has passed through the electro-optical system, aberration is reduced in proportion to the degree of deceleration, making it possible to concurrently reduce a focus size. | 12-11-2008 |
20080290285 | SCINTILLATION PANEL AND RADIATION DETECTOR - A scintillation panel has a support substrate to pass radiation, a light-reflecting material dispersed film which is formed flat on the support substrate, and provided with dispersed light-reflecting material particles to reflect visible light, and a scintillation layer which is formed on the light-reflecting material dispersed film, and converts an incident radiation into visible light. | 11-27-2008 |
20080267347 | X-Ray Tomograph and Stereoradioscopic Image Constructing Equipment - 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. | 10-30-2008 |
20080237474 | SEMICONDUCTOR PHOTODIODE AND METHOD FOR MANUFACTURING SAME, RADIATION DETECTION DEVICE, AND RADIATION IMAGING APPARATUS - A semiconductor photodiode includes: an insulative substrate; a first conductivity type semiconductor layer formed on the insulative substrate; an i-type semiconductor layer formed on the first conductivity type semiconductor layer; a second conductivity type semiconductor layer formed on the i-type semiconductor layer; and a metal electrode. The metal electrode is provided between the insulative substrate and the first conductivity type semiconductor layer so that a peripheral face of the metal electrode is located inside a peripheral face of the first conductivity type semiconductor layer. | 10-02-2008 |