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1. (WO2018079946) X-RAY TUBE FOR IMPROVING ELECTRON FOCUSING
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Pub. No.: WO/2018/079946 International Application No.: PCT/KR2017/002046
Publication Date: 03.05.2018 International Filing Date: 24.02.2017
IPC:
H01J 35/14 (2006.01) ,H01J 35/06 (2006.01) ,H01J 35/16 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
35
X-ray tubes
02
Details
14
Arrangements for concentrating, focusing, or directing the cathode ray
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
35
X-ray tubes
02
Details
04
Electrodes
06
Cathodes
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
35
X-ray tubes
02
Details
16
Vessels; Containers; Shields associated therewith
Applicants:
(주)선재하이테크 SUNJE HI-TEK CO., LTD. [KR/KR]; 부산시 기장군 일광면 청광길 8 8, Cheonggwang-gil, Ilgwang-myeon Gijang-gun Busan 46047, KR
Inventors:
이동훈 LEE, Donghoon; KR
김상효 KIM, Sanghyo; KR
김은민 KIM, Eunmin; KR
김수현 KIM, Soohyun; KR
정동길 JUNG, Donggil; KR
김정동 KIM, Jungdong; KR
Agent:
정남진 JUNG, Namjin; KR
Priority Data:
10-2016-014186728.10.2016KR
Title (EN) X-RAY TUBE FOR IMPROVING ELECTRON FOCUSING
(FR) TUBE À RAYONS X D'AMÉLIORATION DE CONCENTRATION D'ÉLECTRONS
(KO) 전자 집속 개선용 X선관
Abstract:
(EN) The present invention relates to "an X-ray tube for improving electron focusing" capable of guiding thermoelectrons discharged from a filament such that the thermoelectrons can efficiently move to a target on an X-ray irradiation window and reducing a proportion of impurities having been adsorbed in the filament. The X-ray tube for improving electron focus, proposed in the present invention, comprises: a non-conductive tubular pipe forming a body and having a hollow; the X-ray irradiation window which is formed so as to shield the upper end part of the tubular pipe, has a target coated thereon, and allows an X-ray to be irradiated therethrough; a stem part formed so as to shield the lower end part of the tubular pipe; a plurality of metal wires which extend towards the inside of the tubular pipe from the outside of the stem part and to which a predetermined negative high voltage is applied; the filament connected between the metal wires extending towards the inside of the tubular pipe, and discharging thermoelectrons; a first focusing tube encompassing the filament in order to focus the thermoelectrons discharged from the filament; and a cylindrical shield housing made of a conductive material and encompassing the outside of the tubular pipe, wherein the shield housing has the same voltage as the predetermined negative high voltage applied to the metal wires. The X-ray tube for improving electron focusing, proposed in the present invention, has the following advantages. 1. The thermoelectrons discharged from the filament can be efficiently moved to the target by providing an additional focusing tube at the lower part of the X-ray irradiation window. 2. The probability that gas-phased impurities are adsorbed on the filament (- voltage) located inside a focusing tube can be reduced by causing the impurities to be delaminated (released) from the target and adsorbed on the inner wall of the tubular pipe by the shield housing outside the tubular pipe, to which a negative voltage is applied, thereby enabling the life span of the filament to improve. 3. The probability that the thermoelectrons discharged from the filament can be moved to the X-ray irradiation window is to be improved by forming a shield wing part in the first focusing tube and dividing a space inside the tubular pipe into two.
(FR) La présente invention concerne un « tube à rayons X d'amélioration de concentration d'électrons » permettant de guider des thermo-électrons déchargés d'un filament de sorte que les thermo-électrons puissent se déplacer efficacement vers une cible sur une fenêtre d'exposition à un rayonnement de rayons X, et de réduire une proportion d'impuretés ayant été adsorbées dans le filament. Le tube à rayons X d'amélioration de concentration d'électrons, selon la présente invention, comprend : une conduite tubulaire non conductrice formant un corps et comportant un creux; la fenêtre d'exposition à un rayonnement de rayons X qui est formée de façon à protéger la partie d'extrémité supérieure de la conduite tubulaire, comportant une cible revêtue sur cette dernière, et qui permet à un rayon X de rayonner à travers cette dernière; une partie de tige formée de façon à protéger la partie d'extrémité inférieure de la conduite tubulaire; une pluralité de fils métalliques qui s'étendent vers l'intérieur de la conduite tubulaire à partir de l'extérieur de la partie de tige et auxquels est appliquée une haute tension négative prédéfinie; le filament connecté entre les fils métalliques s'étendant vers l'intérieur de la conduite tubulaire, et déchargeant des thermo-électrons; un premier tube de concentration englobant le filament afin de concentrer les thermo-électrons déchargés à partir du filament; et un boîtier de protection cylindrique constitué d'un matériau conducteur et englobant l'extérieur de la conduite tubulaire, le boîtier de protection se voyant appliquer la même tension que la haute tension négative prédéfinie appliquée aux fils métalliques. Le tube à rayons X d'amélioration de concentration d'électrons, selon la présente invention, présente les avantages suivants. 1. Les thermo-électrons déchargés à partir du filament peuvent être efficacement déplacés vers la cible en disposant un tube de concentration supplémentaire au niveau de la partie inférieure de la fenêtre d'exposition à un rayonnement de rayons X. 2. La probabilité que des impuretés en phase gazeuse soient adsorbées sur le filament (tension négative) situé à l'intérieur d'un tube de concentration peut être réduite en provoquant un délamination (libération) des impuretés de la cible et leur adsorption sur la paroi interne de la conduite tubulaire par le boîtier de protection à l'extérieur de la conduite tubulaire, auquel est appliquée une tension négative, ce qui permet d'améliorer la durée de vie du filament. 3. La probabilité que les thermo-électrons déchargés à partir du filament puissent être déplacés vers la fenêtre d'exposition à un rayonnement de rayons X doit être améliorée par formation d'une partie d'aile de protection dans le premier tube de concentration et par division en deux d'un espace à l'intérieur de la conduite tubulaire.
(KO) 본 발명은 필라멘트에서 방출된 열전자가 X선 조사창의 타겟으로 효율적으로 이동할 수 있도록 안내할 수 있도록 하고 필라멘트에 불순물이 흡착되는 비중을 감소시킬 수 있는 "전자 집속 개선용 X선관"에 관한 것이다. 본 발명에서 제안하는 전자 집속 개선용 X선관은 바디를 형성하며 중공이 형성된 비도전성의 튜브관과, 상기 튜브관의 상단부를 차폐하도록 형성되고 타켓이 도포되어 있는 X선을 조사하는 X선 조사창과, 상기 튜브관의 하단부를 차폐하도록 형성되어 스템부와, 상기 스템부의 외측에서 상기 튜브관 내측으로 연장되며 소정의 네거티브 고전압이 인가되는 복수개의 금속 와이어와, 상기 튜브관 내측으로 연장되어 있는 상기 금속 와이어 사이에 연결되어 열전자를 방출하는 필라멘트와, 상기 필라멘트에서 방출되는 상기 열전자를 집속하기 위하여 상기 필라멘트를 감싸는제 1 집속관과, 상기 튜브관의 외측을 감싸는 도전성 재질의 원통형 차폐 하우징을 구비하며, 상기 차폐 하우징은 상기 금속 와이어에 인가되는 소정의 네거티브 고전압과 동일 전압이다. 본 발명에서 제안하는 전자 집속 개선용 X선관은 다음과 같은 장점을 구비하고 있다. 1. X선 조사창 하부에 추가의 집속관을 제공함으로써 필라멘트에서 방출된 열전자를 효율적으로 타겟에 이동시킬 수 있다. 2. 튜브관 외부에 네거티브 전압인 인가되는 차폐 하우징에 의하여 타켓으로부터 박리(이탈)되어 가스 형태를 띠는 불순물이 튜브관 내벽에 흡착되도록 함으로써 집속관 내부에 위치한 필라멘트(-전압)에 흡착되는 확율을 저감시켜 필라멘트의 수명을 개선시킬 수 있도록 하였다. 3. 제 1 집속관에 차폐 날개부를 형성하여 튜브관 내부의 공간을 이중으로 분리하여 필라멘트에서 방출된 열전자가 X선 조사창으로 이동할 수 있는 확률을 개선시키고자 하였다.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)