-
公开(公告)号：US09640362B2
公开(公告)日：2017-05-02
申请号：US14605830
申请日：2015-01-26
Inventor： Jun Tae Kang , Yoon-Ho Song
Abstract: Provided is an X-ray tube including an anode, a target on the anode, a cathode disposed separate from the target and the anode and comprising an emitter providing an electron beam to the target, and a side wall disposed between the cathode and the anode, and surrounding the target and the emitter. The side wall reflects a light generated by collision of the electron beam with the target to the cathode, and electrically insulates the cathode from the anode.
-
22.发明授权Field emission X-ray tube and method of focusing electron beam using the same 有权场发射X射线管和使用其的电子束聚焦方法公开(公告)号：US09105437B2
公开(公告)日：2015-08-11
申请号：US13829130
申请日：2013-03-14
Inventor： Sungyoul Choi , Yoon-Ho Song
CPC classification number: H01J35/065 , H01J3/14 , H01J29/481 , H01J29/488 , H01J29/51 , H01J29/58 , H01J29/82 , H01J35/14
Abstract: Provided is a field emission X-ray tube. The field emission X-ray tube includes a cathode electrode provided on one end of a vacuum container, including a field emission emitter; a gate electrode provided inside the vacuum container to be adjacent to the cathode electrode, including a first opening; a focusing electrode electrically connected to the gate electrode and provided on one surface of the gate electrode to be farther from the cathode electrode than the gate electrode while including a second opening with a greater width than that of the first opening; and an anode electrode provided inside the vacuum container on another end thereof in a direction where the vacuum container is extended. A height of the focusing electrode is identical to the width of the second opening, and wherein the width of the first opening is ⅓ or less of the second opening.
Abstract translation: 提供场发射X射线管。 场发射X射线管包括设置在真空容器的一端的阴极，包括场致发射体; 设置在所述真空容器内的与所述阴极电极相邻的栅电极，包括第一开口; 电极连接到所述栅电极并且设置在所述栅电极的一个表面上以比所述栅电极更远离所述阴极的聚焦电极，同时包括具有比所述第一开口的宽度更大的第二开口; 以及在真空容器延伸的方向的另一端设置在真空容器的内部的阳极电极。 聚焦电极的高度与第二开口的宽度相同，并且其中第一开口的宽度为第二开口的1/3或更小。
-
公开(公告)号：US20140111081A1
公开(公告)日：2014-04-24
申请号：US14057892
申请日：2013-10-18
Inventor： Jin Woo Jeong , Jae-woo Kim , Yoon-Ho Song , Jun Tae Kang , Sungyoul Choi
CPC classification number: H01J9/025 , H01J1/304 , H01J29/04 , H01J35/065 , H01J2329/0455
Abstract: Disclosed is a field emitter electrode including a bonding unit formed on a substrate, and a plurality of carbon nanotubes fixed to the substrate by the bonding unit, in which the bonding unit includes a carbide-based first inorganic filler and a second inorganic filler formed of a metal.
Abstract translation: 公开了一种场致发射电极，其包括形成在基板上的接合单元和通过接合单元固定到基板的多个碳纳米管，其中接合单元包括碳化物基第一无机填料和第二无机填料， 金属。
-
公开(公告)号：US12167923B2
公开(公告)日：2024-12-17
申请号：US17861841
申请日：2022-07-11
Inventor： Sunghoon Choi , Yoon-Ho Song , Jin-Woo Jeong , Sora Park
Abstract: Provided is a backscattered X-ray image device based on multi-sources. The backscattered X-ray image device includes an X-ray tube array configured to generate X-rays, first slit plates provided on the X-ray tube array and having a first slit through which the X-rays pass, second slit plates provided on the first slit plates and having second slits defined in a direction different from that of the first slit, and detectors provided on the second slit plates and having a narrow gap in the same direction as the first slit, the detectors being configured to detect a backscattered beam that is emitted from a subject receiving the X-rays.
-
25.发明授权公开(公告)号：US11690587B2
公开(公告)日：2023-07-04
申请号：US17172549
申请日：2021-02-10
Inventor： Jin-Woo Jeong , Yoon-Ho Song
CPC classification number: A61B6/5217 , A61B6/461 , A61B6/486 , A61B6/487 , A61B6/5205 , A61B6/5211 , A61B6/5235 , A61B6/5264 , A61B6/541 , A61B6/542 , A61B6/545 , G01N23/04 , G06T7/20 , G01N2223/306 , G06T2207/10116 , G06T2207/20216
Abstract: Disclosed is an X-ray image processing apparatus including a data obtaining unit generating first to N-th images indicating an internal structure of an object and an image processing unit receiving the first to N-th images from the data obtaining unit, detecting a movement of the object, and generating a final image from the first to N-th images based on the movement of the object. The data obtaining unit actively controls an X-ray pulse irradiated based on the movement of the object.
-
Patent Agency Ranking
公开(公告)号：US10701789B2
公开(公告)日：2020-06-30
申请号：US15879323
申请日：2018-01-24
Inventor： Sora Park , Yoon-Ho Song , Jin-Woo Jeong
Abstract: Provided is a method for driving an X-ray source, which includes a cathode electrode, an electron source provided on the cathode electrode and configured to emit an electron beam, and an anode target including an electron beam irradiation surface with the electron beam irradiated thereto, the method including providing the electron beam in a plurality of main pulses, wherein each of the main pulses includes a plurality of short pulses having an idle time and a pulse time, and each of the idle time and the pulse time is shorter than a duration time of the main pulse, wherein applying the plurality of short pulses comprises irradiating the electron beam from the electron source towards the electron beam irradiation surface during the pulse time; and idling the electron beam during the idle time, wherein a duty cycle of the short pulse is 0.4 to 0.6, which is obtained by dividing the idle time by a sum of the pulse time and the idle time.
-
公开(公告)号：US10522316B2
公开(公告)日：2019-12-31
申请号：US16358370
申请日：2019-03-19
Inventor： Jin-Woo Jeong , Yoon-Ho Song
Abstract: Disclosed is an X-ray source, including: a cathode; an anode positioned on the cathode so as to face the cathode; emitters formed on the cathode; a gate electrode positioned between the cathode and the anode and including openings at positions corresponding to those of the emitters; an insulating spacer formed between the gate and the anode; and a coating layer formed on an internal wall of the insulating spacer, and including a material having a lower secondary electron emission coefficient than that of the insulating spacer.
-
公开(公告)号：US10455677B2
公开(公告)日：2019-10-22
申请号：US15459661
申请日：2017-03-15
Inventor： Jun Tae Kang , Yoon-Ho Song , Jin-Woo Jeong
Abstract: Provided is an X-ray generator including a thermal electron emission type X-ray generator configured to generate a negative high voltage and a filament current, a field electron emission type X-ray generator including an anode electrode to be grounded, and configured to use the negative high voltage to bias the cathode electrode, and a field emission current control unit configured to convert the filament current to generate an output voltage to be provided to a gate electrode of the field electron emission type X-ray generator and convert the filament current to fix, to a specific level, a level of an emission current flowing through the cathode electrode.
-
公开(公告)号：US10008358B2
公开(公告)日：2018-06-26
申请号：US15229063
申请日：2016-08-04
Inventor： Jin-Woo Jeong , Yoon-Ho Song
CPC classification number: H01J35/06 , G21K1/02 , H01J35/065 , H01J35/16 , H01J2201/30469 , H01J2235/068 , H01J2235/166
Abstract: Disclosed is an X-ray source, including: a cathode including a shielding channel through which an X-ray passes; emitters formed on an upper surface of the cathode, and arranged around the shielding channel; an anode positioned so as to face the cathode, and including an anode target in which an E-beam is focused; and a gate electrode positioned between the cathode and the anode, and including gate holes at positions corresponding to those of the emitters.
-
公开(公告)号：US09941091B2
公开(公告)日：2018-04-10
申请号：US15074859
申请日：2016-03-18
Inventor： Jin-Woo Jeong , Yoon-Ho Song
CPC classification number: H01J35/065 , H01J35/08
Abstract: An X-ray tube includes a cathode including an emitter emitting an electron beam, an anode at which a target material is disposed, the target material emitting an X-ray by colliding with the electron beam, and an insulating spacer isolating the anode, wherein the cathode or the anode is disposed between the emitter and the insulating spacer.
-
-
-
-
-
-
-
-
-
Search Results
35
records
(took 0.02 seconds)
