EP1418610B1 - Mikrofocus-Röntgenröhre - Google Patents
Mikrofocus-Röntgenröhre Download PDFInfo
- Publication number
- EP1418610B1 EP1418610B1 EP03024511A EP03024511A EP1418610B1 EP 1418610 B1 EP1418610 B1 EP 1418610B1 EP 03024511 A EP03024511 A EP 03024511A EP 03024511 A EP03024511 A EP 03024511A EP 1418610 B1 EP1418610 B1 EP 1418610B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ray tube
- head
- target
- microfocus
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010894 electron beam technology Methods 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000011835 investigation Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 9
- 230000005855 radiation Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/112—Non-rotating anodes
- H01J35/116—Transmissive anodes
Definitions
- microfocus X-ray tubes whose in operation facing the object to be examined Head has a diameter of a few cm. to Achieving a high magnification, it is necessary the focus and thus the head of the microfocus X-ray tube close enough to the component to be tested. This is only possible if on the to be tested No elevations are present against which the Head before reaching the required distance encounters.
- the known x-ray tubes are thus suitable mainly for testing flat components while they are for a test of surveys, for example, populated printed circuit boards, only in limited Dimensions are suitable.
- JP-2000 306533 is a microfocus X-ray tube of the type in question.
- the well-known X-ray tube has a during operation of the X-ray tube a object to be examined facing the head, on or in which a target is arranged, and means, the an electron beam impinging on the target form such that the X-ray tube a focal spot with a diameter of s 200 ⁇ m, in particular ⁇ 10 ⁇ m.
- the outer surface of the head points at the known X-ray tube to a free end towards tapering cross-section, the target as Transmission target is formed.
- a disadvantage of the known X-ray tube consists in that they are used to investigate fissured components, For example, electronic circuit boards, not suitable is.
- the invention is based on the object Specify microfocus X-ray tube with which to investigate Also rugged components is possible and the is robust in construction.
- the taper of the cross section of the outer surface of the head can be formed in any suitable manner be.
- the head on his free end in the manner of a pointed gable roof be educated.
- An advantageous development The teaching of the invention provides that the outer surface formed substantially rotationally symmetrical is. In this embodiment, a particularly cost-effective Achievement achieved because the outer surface of the Head formed for example by a simple rotary part can be.
- the Outer surface of the head in the direction of radiation also at least in sections by a holder for the Target be formed.
- the opening angle of the essential conical outer surface preferably less as 50 °. That way, the head can handle one too strong inclination to the surface of the component to be tested be introduced.
- the head points at least two in the radiation direction of the X-radiation successively arranged areas with different Opening angles of the conical outer surface on.
- the head is in the radiation direction X-rays from cones with different Opening angles composed.
- FIG. 5 shows the head 6 of the X-ray tube 2 in the assembled state, in which the target 8 on the holder 18th and the collimator 24 is mounted on the target.
- the collimator 24 is fixedly connected to the holder 18, so that the target 8 is held firmly on the holder 18 is.
- the through the target 8 and the bracket 18th formed unit can be detachable with the main body 3 of the X-ray tube 2 are connected, so that they are needed can be easily replaced.
- a dashed line Line 34 is a head of a conventional x-ray tube shown. It can be seen that the head of such conventional X-ray tube in a tilted Leading the head 6 to the surface of the component 4 would abut this surface, before the with the X-ray tube 2 according to the invention achievable and to obtain a high magnification image required small distance of the head from the surface of the component 4 is reached.
Landscapes
- X-Ray Techniques (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Confectionery (AREA)
- Paper (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Description
- Fig. 1
- eine schematische Seitenansicht eines Ausführungsbeispieles einer erfindungsgemäßen Mikrofocus-Röntgenröhre,
- Fig. 2
- einen Axialschnitt durch ein erfindungsgemäßes Target der Mikrofocus-Röntgenröhre gemäß Fig. 1,
- Fig. 3
- in gleicher Darstellung wie Fig. 1, jedoch gegenüber Fig. 2 stark verkleinertem Maßstab das Target gemäß Fig. 2 mit einer Halterung für das Target,
- Fig. 4
- in gleicher Darstellung wie Fig. 2, jedoch gegenüber Fig. 2 etwas verkleinertem Maßstab einen Kollimator für das Target gemäß Fig. 2 und
- Fig. 5
- in gleicher Darstellung wie Fig. 3 den Kopf der Mikrofocus-Röntgenröhre gemäß Fig. 1.
Claims (6)
- Mikrofocus-Röntgenröhre,
mit einem bei Betrieb der Röntgenröhre einem zu untersuchenden Objekt zugewandten Kopf (6), an dem oder in dem ein Target (8) angeordnet ist, und mit Mitteln, die einen auf das Target (8) auftreffenden Elektronenstrahl derart formen, daß die Röntgenröhre einen Brennfleck mit einem Durchmesser von ≤ 200 µm, insbesondere ≤ 10 µm, aufweist,
wobei die Außenfläche des Kopfes (6) einen sich zu seinem freien Ende hin verjüngenden Querschnitt aufweist und
wobei das Target (8) als Transmissionstarget ausgebildet ist,
dadurch gekennzeichnet, daß die Außenfläche des Kopfes (6) wenigstens teilweise durch das Target (8) oder einen in strahlrichtung dem Target (8) nachgeordneten Kollimator (24) gebildet ist,
daß das Target (8) hohl ausgebildet ist und
daß das Target (8) in eine Spitze (32) mündet. - Mikrofocus-Röntgenröhre nach Anspruch 1, dadurch gekennzeichnet, daß die Außenfläche des Kopfes (6) im wesentlichen rotationssymmetrisch ausgebildet ist.
- Mikrofocus-Röntgenröhre nach Anspruch 2, dadurch gekennzeichnet, daß die Außenfläche des Kopfes (6) im wesentlichen konisch ausgebildet ist.
- Mikrofocus-Röntgenröhre nach Anspruch 1, dadurch gekennzeichnet, daß die Außenfläche des Kopfes (6) in Strahlungsrichtung wenigstens abschnittsweise durch eine Halterung (18) für das Target (8) gebildet ist.
- Mikrofocus-Röntgenröhre nach Anspruch 3, dadurch gekennzeichnet, daß der Öffnungswinkel (α) der im wesentlichen konischen Außenfläche weniger als 50° beträgt.
- Mikrofocus-Röntgenröhre nach Anspruch 3, dadurch gekennzeichnet, daß der Kopf (6) wenigstens zwei in Axialrichtung hintereinander angeordnete Bereiche mit unterschiedlichen Öffnungswinkeln der konischen Außenfläche aufweist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10251635A DE10251635A1 (de) | 2002-11-06 | 2002-11-06 | Röntgenröhre, insbesondere Mikrofokus-Röntgenröhre |
| DE10251635 | 2002-11-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1418610A1 EP1418610A1 (de) | 2004-05-12 |
| EP1418610B1 true EP1418610B1 (de) | 2005-10-19 |
Family
ID=32103371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03024511A Expired - Lifetime EP1418610B1 (de) | 2002-11-06 | 2003-10-24 | Mikrofocus-Röntgenröhre |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7050543B2 (de) |
| EP (1) | EP1418610B1 (de) |
| AT (1) | ATE307386T1 (de) |
| DE (2) | DE10251635A1 (de) |
| DK (1) | DK1418610T3 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006062452B4 (de) | 2006-12-28 | 2008-11-06 | Comet Gmbh | Röntgenröhre und Verfahren zur Prüfung eines Targets einer Röntgenröhre |
| US8831179B2 (en) | 2011-04-21 | 2014-09-09 | Carl Zeiss X-ray Microscopy, Inc. | X-ray source with selective beam repositioning |
| RU2645749C2 (ru) * | 2016-05-23 | 2018-02-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Рязанский государственный радиотехнический университет" | Микрофокусная рентгеновская трубка |
| DE102017105546B4 (de) * | 2017-03-15 | 2018-10-18 | Yxlon International Gmbh | Steckdose zur Aufnahme eines Steckers eines Hochspannungskabels für eine Mikrofokus-Röntgenröhre, Steckverbindung für ein Hochspannungskabel |
| US20190272970A1 (en) * | 2018-03-02 | 2019-09-05 | AcceleRAD Technologies, Inc. | Static collimator for reducing spot size of an electron beam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0366372A1 (de) * | 1988-10-25 | 1990-05-02 | X-Ray Technologies Inc. | Röntgenröhre mit Mehrfachtarget |
| DE19633860A1 (de) * | 1995-08-18 | 1997-02-20 | Ifg Inst Fuer Geraetebau Gmbh | Verfahren zur Erzeugung von Röntgenstrahlung hoher Intensität und unterschiedlicher Energie und Röntgenröhre zur Durchführung des Verfahrens |
| JP2000306533A (ja) * | 1999-02-19 | 2000-11-02 | Toshiba Corp | 透過放射型x線管およびその製造方法 |
| WO2001099478A1 (en) * | 2000-06-22 | 2001-12-27 | Xrt Limited | X-ray micro-target source |
Family Cites Families (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL16507C (de) * | 1924-07-23 | 1927-07-15 | ||
| DE662408C (de) * | 1934-04-14 | 1938-07-12 | Ernst Pohl | Roentgenroehre, insbesondere fuer Durchleuchtung und Aufnahme, mit von der Kathode umgebener Kegelanode |
| GB1249341A (en) * | 1968-10-08 | 1971-10-13 | Rigaku Denki Company Ltd | Improvements in or relating to x-ray tubes |
| US3584219A (en) * | 1969-01-30 | 1971-06-08 | Du Pont | X-ray generator having an anode formed by a solid block with a conical bore closed by a target toil |
| US3668454A (en) * | 1969-08-05 | 1972-06-06 | Rigaku Denki Co Ltd | Fine focus x-ray tube |
| FR2355428A1 (fr) * | 1976-06-14 | 1978-01-13 | Elf Aquitaine | Dispositif d'irradiation a haut rendement comportant un tube generateur de rayons x avec anode fenetre |
| FR2386109A1 (fr) * | 1977-04-01 | 1978-10-27 | Cgr Mev | Tete d'irradiation a rayons g pour une irradiation panoramique et generateur de rayons g comportant une telle tete d'irradiation |
| FR2514108B1 (fr) | 1981-10-06 | 1986-06-13 | Framatome Sa | Procede et dispositif d'elimination des boues sur la plaque tubulaire des generateurs de vapeur |
| DE3139899A1 (de) * | 1981-10-07 | 1983-04-21 | Schöfer, Hans, Dipl.-Phys., 8011 Zorneding | Roentgenroehre zur erzeugung sehr hoher dosen in kleinen volumen |
| US4439870A (en) * | 1981-12-28 | 1984-03-27 | Bell Telephone Laboratories, Incorporated | X-Ray source and method of making same |
| DK147778C (da) * | 1981-12-29 | 1985-05-20 | Andrex Radiation Prod As | Roentgenstraalegenerator |
| US4521902A (en) * | 1983-07-05 | 1985-06-04 | Ridge, Inc. | Microfocus X-ray system |
| US4618972A (en) * | 1984-09-07 | 1986-10-21 | At&T Bell Laboratories | X-ray source comprising double-angle conical target |
| FR2600422B1 (fr) * | 1986-05-29 | 1989-10-13 | Instruments Sa | Appareil et procede d'analyses chimiques locales a la surface de materiaux solides par spectroscopie de photo-electrons x |
| NL8603264A (nl) * | 1986-12-23 | 1988-07-18 | Philips Nv | Roentgenbuis met een ringvormig focus. |
| DE3716618A1 (de) * | 1987-05-18 | 1988-12-08 | Philips Patentverwaltung | Strahlenquelle zur erzeugung einer im wesentlichen monochromatischen roentgenstrahlung |
| US4825454A (en) * | 1987-12-28 | 1989-04-25 | American Science And Engineering, Inc. | Tomographic imaging with concentric conical collimator |
| US5422926A (en) * | 1990-09-05 | 1995-06-06 | Photoelectron Corporation | X-ray source with shaped radiation pattern |
| JPH0982252A (ja) * | 1995-09-07 | 1997-03-28 | Toshiba Corp | 分析用x線管 |
| US5729583A (en) * | 1995-09-29 | 1998-03-17 | The United States Of America As Represented By The Secretary Of Commerce | Miniature x-ray source |
| DE19544203A1 (de) * | 1995-11-28 | 1997-06-05 | Philips Patentverwaltung | Röntgenröhre, insbesondere Mikrofokusröntgenröhre |
| DE19639243C2 (de) * | 1996-09-24 | 1998-07-02 | Siemens Ag | Multi-, insbesondere dichromatische Röntgenquelle |
| US6075839A (en) * | 1997-09-02 | 2000-06-13 | Varian Medical Systems, Inc. | Air cooled end-window metal-ceramic X-ray tube for lower power XRF applications |
| JP4334639B2 (ja) * | 1998-07-30 | 2009-09-30 | 浜松ホトニクス株式会社 | X線管 |
| GB9906886D0 (en) * | 1999-03-26 | 1999-05-19 | Bede Scient Instr Ltd | Method and apparatus for prolonging the life of an X-ray target |
| US6195411B1 (en) * | 1999-05-13 | 2001-02-27 | Photoelectron Corporation | Miniature x-ray source with flexible probe |
| JP2002253687A (ja) * | 2001-03-02 | 2002-09-10 | Mitsubishi Heavy Ind Ltd | 放射線医療装置 |
| US6661876B2 (en) * | 2001-07-30 | 2003-12-09 | Moxtek, Inc. | Mobile miniature X-ray source |
-
2002
- 2002-11-06 DE DE10251635A patent/DE10251635A1/de not_active Withdrawn
-
2003
- 2003-10-24 DE DE50301406T patent/DE50301406D1/de not_active Expired - Lifetime
- 2003-10-24 EP EP03024511A patent/EP1418610B1/de not_active Expired - Lifetime
- 2003-10-24 AT AT03024511T patent/ATE307386T1/de not_active IP Right Cessation
- 2003-10-24 DK DK03024511T patent/DK1418610T3/da active
- 2003-11-05 US US10/702,219 patent/US7050543B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0366372A1 (de) * | 1988-10-25 | 1990-05-02 | X-Ray Technologies Inc. | Röntgenröhre mit Mehrfachtarget |
| DE19633860A1 (de) * | 1995-08-18 | 1997-02-20 | Ifg Inst Fuer Geraetebau Gmbh | Verfahren zur Erzeugung von Röntgenstrahlung hoher Intensität und unterschiedlicher Energie und Röntgenröhre zur Durchführung des Verfahrens |
| JP2000306533A (ja) * | 1999-02-19 | 2000-11-02 | Toshiba Corp | 透過放射型x線管およびその製造方法 |
| WO2001099478A1 (en) * | 2000-06-22 | 2001-12-27 | Xrt Limited | X-ray micro-target source |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50301406D1 (de) | 2006-03-02 |
| US7050543B2 (en) | 2006-05-23 |
| ATE307386T1 (de) | 2005-11-15 |
| DE10251635A1 (de) | 2004-05-27 |
| EP1418610A1 (de) | 2004-05-12 |
| DK1418610T3 (da) | 2006-03-06 |
| US20040091081A1 (en) | 2004-05-13 |
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