JPS6386231A - X-ray image intensifier - Google Patents

X-ray image intensifier

Info

Publication number
JPS6386231A
JPS6386231A JP23063286A JP23063286A JPS6386231A JP S6386231 A JPS6386231 A JP S6386231A JP 23063286 A JP23063286 A JP 23063286A JP 23063286 A JP23063286 A JP 23063286A JP S6386231 A JPS6386231 A JP S6386231A
Authority
JP
Japan
Prior art keywords
vacuum envelope
metal ring
anode
input
screen
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.)
Pending
Application number
JP23063286A
Other languages
Japanese (ja)
Inventor
Makoto Kubo
誠 久保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP23063286A priority Critical patent/JPS6386231A/en
Publication of JPS6386231A publication Critical patent/JPS6386231A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To get rid of any distortion in an electronic oven as well as to aim at improvement in resolution, by installing a metal ring at the output side of a vacuum envelope and in and around the anode. CONSTITUTION:An input screen 2 consisting of an aluminum substrate 3, an input phosphor screen 4 and a photoelectric surface 5 and the cathode 6 are disposed at the input side (input aperture 1a side) in a vacuum envelope 1, while an output screen 10 and the anode 8 are disposed at the output side as well. In addition, a focusing electrode 7 is set up along a side wall inside the vacuum envelope 1. Moreover, a metal ring 11 is set up at the output side inside the vacuum envelope 1 and in and around the anode 8, and attached to this vacuum envelope 1. With this metal ring 11, a uniform electron lens is formable. And, since an antimony source 12 and a getter wire 13 are installed between this metal ring 11 and an inner surface of the vacuum envelope 1, any adverse effect to e exerted on the electron lens is preventable, thus such resolution distribution that is uniform in a range from the center to the periphery is securable.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) この発明は、X線イメージインテンシファイヤの改良に
関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) This invention relates to improvements in X-ray image intensifiers.

(従来の技術) 従来のX線イメージインテンシファイヤは、第3図に示
すように構成され、真空外囲器1内の入力側(入力窓l
a側)には入力スクリーン2と陰極6が配設され、入力
スクリーン2はAl基板3、入力蛍光面4、光電面5か
らなっている。更に、真空外囲器1内の出力側には、出
力スクリーン10と陽極8が配設されている。又、真空
外囲器1内の側壁に沿って、集束電極7が配設されてい
る。更に、出力側には、真空外囲S1に突出部1bが形
成され、この突出部1b内にアンチモンソース12が設
けられている。又、出力側の真空外囲器1には、上記突
出部1bとは反対側に陽極ステム1cが形成され、この
陽極ステム1cを貫通して高圧リード端子9が設けられ
、この高圧リード端子9は陽極8に接触して電気的に接
続されている。
(Prior Art) A conventional X-ray image intensifier is configured as shown in FIG.
On the a side), an input screen 2 and a cathode 6 are arranged, and the input screen 2 consists of an Al substrate 3, an input fluorescent screen 4, and a photocathode 5. Furthermore, an output screen 10 and an anode 8 are disposed on the output side within the vacuum envelope 1. Further, a focusing electrode 7 is arranged along the side wall inside the vacuum envelope 1. Furthermore, on the output side, a protrusion 1b is formed in the vacuum envelope S1, and an antimony source 12 is provided within this protrusion 1b. Further, an anode stem 1c is formed on the output side vacuum envelope 1 on the opposite side to the protrusion 1b, and a high voltage lead terminal 9 is provided passing through this anode stem 1c. is in contact with and electrically connected to the anode 8.

(発明が解決しようとする問題点) 上記のような従来のX線イメージインテンシファイヤで
は、真空外囲器1の形状の不均一や内部に取付ける部品
(例えばアンチモンソース12等)によって電子レンズ
が歪められ、解像度が低下してしまう。
(Problems to be Solved by the Invention) In the conventional X-ray image intensifier as described above, the electron lens may be damaged due to non-uniformity in the shape of the vacuum envelope 1 or parts installed inside (for example, the antimony source 12, etc.). The image will be distorted and the resolution will be reduced.

この発明は、予め真空外囲器内の出力側で且つ陽極の近
傍に金属リングを設けることにより、電子レンズの歪み
をなくし、解像度を著しく向上したX線イメージインテ
ンシファイヤを提供することを目的とする。
An object of the present invention is to provide an X-ray image intensifier that eliminates distortion of the electron lens and significantly improves resolution by providing a metal ring in advance on the output side of the vacuum envelope and near the anode. shall be.

[発明の構成] (問題点を解決するための手段) この発明は、真空外囲器内の出力側で且つ陽極の近傍に
金属リングを設け、この金属リングは、集束電極と同電
位に設定され、この金属リングと真空外囲器との間にア
ンチモンソースあるいはゲッターワイヤを設けたX線イ
メージインテンシファイヤである。
[Structure of the Invention] (Means for Solving the Problems) This invention provides a metal ring on the output side in the vacuum envelope and near the anode, and this metal ring is set to the same potential as the focusing electrode. This is an X-ray image intensifier in which an antimony source or getter wire is provided between this metal ring and a vacuum envelope.

(作用) この発明によれば、陽極の近傍に集束電極と同電位に設
定された金属リングを設けているので、真空外囲器の形
状の不均一や内部に取付ける部品(例えばアンチモンソ
ース等)によって歪められる電子レンズを補正し、均一
な解像度分布が得られる。
(Function) According to the present invention, since the metal ring set to the same potential as the focusing electrode is provided near the anode, the shape of the vacuum envelope is non-uniform, and parts installed inside (for example, antimony source, etc.) By correcting the electron lens distortion caused by the distortion, a uniform resolution distribution can be obtained.

(実施例) 以下、図面を参照して、この発明の一実施例を詳細に説
明する。
(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

この発明によるX線イメージインテンシファイヤは、第
1図及び第2図に示すように構成され、従来例(第3図
)と同一箇所は同一符号を付すことにする。
The X-ray image intensifier according to the present invention is constructed as shown in FIGS. 1 and 2, and the same parts as in the conventional example (FIG. 3) are given the same reference numerals.

即ち、真空外囲器1内の入力側(入力窓1a側)には、
A1基板3、入力蛍光面4、光電面5からなる入カスク
リーン旦と陰極6が配設され、出力側には出力スクリー
ン10と陽極8が配設されている。又、真空外囲器1内
の側壁に沿って、集束電極7が配設されている。更に、
この発明では、真空外囲器1内の出力側で且つ陽極8の
近傍には、金属リング11が配設され、真空外囲器1に
取付けられている。この金属リング11は真空外囲器1
の出力側の肩に沿った形状にして、第2図からも明らか
なように、アンチモンソース用孔14が穿たれている。
That is, on the input side (input window 1a side) in the vacuum envelope 1,
An input screen consisting of an A1 substrate 3, an input phosphor screen 4, and a photocathode 5 and a cathode 6 are provided, and an output screen 10 and an anode 8 are provided on the output side. Further, a focusing electrode 7 is arranged along the side wall inside the vacuum envelope 1. Furthermore,
In this invention, a metal ring 11 is disposed on the output side of the vacuum envelope 1 and near the anode 8, and is attached to the vacuum envelope 1. This metal ring 11 is the vacuum envelope 1
As is clear from FIG. 2, a hole 14 for the antimony source is bored in the shape along the shoulder on the output side.

このような金属リング11は集束電極7と同電位に設定
され、真空外囲器1内面との間には、アンチモンソース
12とゲッターワイヤ13が設けられている。このアン
チモンソース12は、勿論、アンチモンソース用孔14
に対応して位置しており、アンチモンがアンチモンソー
ス用孔14を通って人力スクリーン2に蒸着されるよう
になっている。
Such a metal ring 11 is set to the same potential as the focusing electrode 7, and an antimony source 12 and a getter wire 13 are provided between it and the inner surface of the vacuum envelope 1. Of course, this antimony source 12 is connected to the antimony source hole 14.
, so that antimony is deposited on the manual screen 2 through the antimony source hole 14 .

尚、金属リング11と集束電極7とを同電位にするには
、銀ペーストのような導電性塗料を塗布しても良いし、
又、ゲッターワイヤ13からゲッターをフラッシュさせ
、そのゲッター膜によって両者を接続しても良い。
Incidentally, in order to make the metal ring 11 and the focusing electrode 7 at the same potential, a conductive paint such as silver paste may be applied, or
Alternatively, the getter may be flushed from the getter wire 13 and the two may be connected by the getter film.

[発明の効果] この発明によれば、真空外囲器1内に設けられた金属リ
ング11により、均一な電子レンズを形成することが出
来る。又、この金属リング11と真空外囲器1内面との
間に、アンチモンソース12とゲッターワイヤ13を設
けているので、アンチモンソース12とゲッターワイヤ
13の電子レンズに及ぼす悪影響を防止することが出来
、中心から周辺まで均一な解像度分布が得られる。
[Effects of the Invention] According to the present invention, a uniform electron lens can be formed by the metal ring 11 provided within the vacuum envelope 1. Furthermore, since the antimony source 12 and getter wire 13 are provided between the metal ring 11 and the inner surface of the vacuum envelope 1, it is possible to prevent the antimony source 12 and getter wire 13 from having an adverse effect on the electron lens. , a uniform resolution distribution from the center to the periphery can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例に係るX線イメージインテ
ンシファイヤを示す断面図、第2図はこの発明のX線イ
メージインテンシファイヤで用いる金属リングを示す斜
視図、第3図は従来のX線イメージインテンシファイヤ
を示す断面図である。 1・・・真空外囲器 2・・・入力スクリーン 6・・・陰極 7・・・集束電極 8・・・陽極 10・・・出力スクリーン 11・・・金属リング 第1図 第2図 第3図
FIG. 1 is a sectional view showing an X-ray image intensifier according to an embodiment of the present invention, FIG. 2 is a perspective view showing a metal ring used in the X-ray image intensifier of the present invention, and FIG. 3 is a conventional FIG. 2 is a sectional view showing an X-ray image intensifier of FIG. 1...Vacuum envelope 2...Input screen 6...Cathode 7...Focusing electrode 8...Anode 10...Output screen 11...Metal ring Fig. 1 Fig. 2 Fig. 3 figure

Claims (2)

【特許請求の範囲】[Claims] (1)真空外囲器内の入力側に入力スクリーン及び陰極
を配設し、出力側に出力スクリーンと陽極を配設し、更
に真空外囲器内の側壁に沿って集束電極を配設してなる
X線イメージインテンシファイヤにおいて、 上記真空外囲器内の出力側で且つ上記陽極の近傍に、金
属リングを設けたことを特徴とするX線イメージインテ
ンシファイヤ。
(1) An input screen and a cathode are arranged on the input side of the vacuum envelope, an output screen and an anode are arranged on the output side, and a focusing electrode is arranged along the side wall of the vacuum envelope. An X-ray image intensifier comprising: a metal ring provided on the output side of the vacuum envelope and near the anode.
(2)上記金属リングは、上記集束電極と同電位に設定
され、この金属リングと上記真空外囲器との間にアンチ
モンソースあるいはゲッターワイヤを設けたことを特徴
とする特許請求の範囲第1項記載のX線イメージインテ
ンシファイヤ。
(2) The metal ring is set to the same potential as the focusing electrode, and an antimony source or getter wire is provided between the metal ring and the vacuum envelope. X-ray image intensifier as described in Section 1.
JP23063286A 1986-09-29 1986-09-29 X-ray image intensifier Pending JPS6386231A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23063286A JPS6386231A (en) 1986-09-29 1986-09-29 X-ray image intensifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23063286A JPS6386231A (en) 1986-09-29 1986-09-29 X-ray image intensifier

Publications (1)

Publication Number Publication Date
JPS6386231A true JPS6386231A (en) 1988-04-16

Family

ID=16910828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23063286A Pending JPS6386231A (en) 1986-09-29 1986-09-29 X-ray image intensifier

Country Status (1)

Country Link
JP (1) JPS6386231A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03124461U (en) * 1990-03-28 1991-12-17
FR2754385A1 (en) * 1996-10-09 1998-04-10 Siemens Ag X-RAY IMAGE ENHANCER HAVING A HOUSING FOR RECEIVING ELECTRODES

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4731402U (en) * 1971-04-20 1972-12-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4731402U (en) * 1971-04-20 1972-12-08

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03124461U (en) * 1990-03-28 1991-12-17
FR2754385A1 (en) * 1996-10-09 1998-04-10 Siemens Ag X-RAY IMAGE ENHANCER HAVING A HOUSING FOR RECEIVING ELECTRODES

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