JPS5840753A - Magnetic-focusing-type cathode-ray tube - Google Patents
Magnetic-focusing-type cathode-ray tubeInfo
- Publication number
- JPS5840753A JPS5840753A JP13700781A JP13700781A JPS5840753A JP S5840753 A JPS5840753 A JP S5840753A JP 13700781 A JP13700781 A JP 13700781A JP 13700781 A JP13700781 A JP 13700781A JP S5840753 A JPS5840753 A JP S5840753A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic field
- focusing
- ray tube
- center cylinder
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/64—Magnetic lenses
Abstract
Description
【発明の詳細な説明】
本発明は複数の電子ビームを有する磁気集束型陰極線管
装置１：ｌｌする電子ビームの集束手段としては、静電
県東方式と磁気集束方式の両者があるが、磁気集束方式
の方が高い解儂度が得られる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetically focused cathode ray tube device having a plurality of electron beams. A higher degree of resolution can be obtained with the focusing method.
まえ、磁気集束方式では、フォーカス電圧の供給が不要
であプこれに付随して、陰極線管の信頼性向上及びコス
ト低下等の大きなメリットがある。First, the magnetic focusing method does not require the supply of a focus voltage, and has the accompanying great advantages of improving the reliability of the cathode ray tube and reducing costs.
特−二永久磁石を磁界発生源とする方法盛二数ては、集
束電力も不要である・第１図は複数の電子ビームを有す
る磁気集束型陰極線管の１例である・（１）は内部を真
空に保つガラス製外囲器、（２）は外囲器ネック、（ａ
ｍ）、（ｓ・）−（３ｍ） は各々ヒーター、陰極。Special method using a permanent magnet as a magnetic field generation source In this case, no focusing power is required. ・Figure 1 is an example of a magnetically focused cathode ray tube with multiple electron beams. ・(1) A glass envelope that maintains a vacuum inside, (2) is the envelope neck, (a
m) and (s・)-(3m) are the heater and cathode, respectively.
第１．第２電極からなる電子銃構体、（４）は螢光体ス
クリーン、（５）は色選別電極％ （６１、＜６Ｖ’Ｆ
１互いに対向し九軟強磁性体磁気曹−り、（７ｍ）＊（
７・）−（７ｍ）はそれぞれ電子銃構体（ａｍ）−（３
・）、（３ｍ）よに射出した電子ビーム軌道、（８）は
偏向ｌ−り、（９）は３電子ビーム集中装置である０磁
界発生用永久磁石（図示せず）は管内ｃ二装置される。1st. The electron gun structure consists of the second electrode, (4) is the phosphor screen, and (5) is the color selection electrode% (61, <6V'F
1 Nine soft ferromagnetic materials facing each other, (7 m)*(
7・)-(7m) are the electron gun structures (am)-(3
), (3 m), the emitted electron beam trajectory, (8) is the deflection l-, (9) is the 3-electron beam concentrator, and the permanent magnet (not shown) for generating the zero magnetic field is the in-tube C2 device. be done.
電子銃（３ａＬ（３ｓ）ｅ（３めよプ射出した電子ビー
ム（７ｍ）−（γｅ）−（７ｍ） は対向した磁気ヨ
ーク（６１、（６）’間に形成される管軸方向磁界舊；
よシ集束作用を受け、スクリーン（４）上に最小のビー
ムスポットを結ぶ・さら６二３電子ビームを集中させる
丸め、集中装置（９）を用いてサイドビーム（７ｍ）−
（７ｍ）をセンタービーム（７＠）方向に偏向し、３ビ
ーム集中な実施しているりしかし、かかる電子ビーム県
中方式ではスクリーン（４）上のビームスポットが縦長
形状とな剰好ましくない。The electron beam emitted from the electron gun (3aL(3s)e ;
A side beam (7 m) is formed using a rounding and concentrating device (9) that focuses the electron beam to the smallest beam spot on the screen (4).
(7m) is deflected toward the center beam (7@) to concentrate three beams.However, in such an electron beam focusing system, the beam spot on the screen (4) becomes vertically elongated, which is not desirable.
本発明は集束磁界を用いて、自己集中を行う磁気集束型
陰極線管装置を提供するものである。本発明の説明を容
易な′らしめるため、さら（：＜ゎしく！１）はネック
断面形状であり、（２１Ｂ） 、 （２１Ｇ） 、 （
２１Ｂ）は３電子ビ一五通過孔、（２）は管軸方向（；
長手方向を有する永久磁石であや、センタービーム通過
孔（２１Ｇ）の上下の所定の位置に配置される。第２図
（ｂ） 、 （Ｃ）は第２図（ａ） ノｙ−ｙＩ及びｘ
−ｘ’ 断面形状を示すものである。＃１２図Ｃ；於て
２軸は管軸とし、２＋方向にスクリーンがあるとして説
明する・永久磁石（２）は２一方向端間がＮ極嬬二り方
向端面が８極嘔二着磁されている。垂直断面第２図（ｂ
） （：於てＮ極を発し九磁力線は磁気ｌ−り（２）内
部を通り相対向する磁気ヨーク（至）′とのギャップ部
で漏えいし、Ｚ＋方向集束主磁界を形成し磁気ヨークげ
に吸収され８極にもどる・しかしながら磁界を完全６＝
整形することは困難であ）実際には、Ｎ極よ）発し２一
方向無限遠方（二面う磁界及びｚ４限遠方よりＳ極嘔：
入る磁界が存在する＠同様のことが水平断面６二ついて
も生ずる０即ち第２図（Ｃ）（二数て、集束主磁界は磁
気口−り（２）、Ｗ間（ニ一方向に形成されるが、磁気
口−り（２）、端から２一方向に向う磁界及び２÷から
磁気口−りｗに向う磁界が存在する０第２図（ｄ）はサ
イドビーム孔（２１ｍ）軸上の磁界分布の概略を示すも
のでＢ、はビームζ；偏向効果を与える成分である。＊
３Ｅは永久磁石Ｇ１を４備とし、サイドビー五通過孔（
３２ｍ）−（３２ｍ）近傍の上下に配置したものである
◎この構成は菖２図←）よ１４上述のＢ、成分、即ち偏
向磁界成分が減少する。さら（；、第３図（ｂ） ＊
（ｃ） ４＝示す如く、永久磁石＠珍の前後に３ビーム
をとｂｔ＜共通曹−クーを所定の長さに設定することに
よ）、上述の偏向成分は大巾（二減少させることが出来
る。The present invention provides a magnetically focused cathode ray tube device that performs self-focusing using a focusing magnetic field. In order to make the explanation of the present invention easy, Sara (:<Washiku!1) is the cross-sectional shape of the neck, and (21B), (21G), (
21B) is the 3-electronic bi-15 passage hole, (2) is the tube axis direction (;
A permanent magnet having a longitudinal direction is arranged at predetermined positions above and below the center beam passage hole (21G). Figure 2(b) and (C) are Figure 2(a) Noy-yI and x
-x' indicates the cross-sectional shape. #12 Diagram C: The explanation is given assuming that the 2nd axis is the tube axis and there is a screen in the 2+ direction. - The permanent magnet (2) has 2 poles between the ends in the 1st direction and 8 poles in the 2nd direction. has been done. Vertical section Figure 2 (b
) (:The N pole is emitted, and the nine magnetic lines of force pass through the inside of the magnetic l- (2) and leak at the gap between the opposing magnetic yoke (to)', forming a focused main magnetic field in the Z+ direction and causing the magnetic yoke to It is absorbed and returns to 8 poles. However, the magnetic field is completely reduced to 6 =
In reality, it is difficult to shape the magnetic field from the N pole) to the infinite distance in one direction (two directions and the S pole from the infinite distance).
The same thing occurs even if there are 6 horizontal cross sections, i.e., Figure 2 (C). However, there is a magnetic field directed in one direction from the magnetic hole (2) and a magnetic field directed from 2÷ to the magnetic hole w. Figure 2 (d) shows the side beam hole (21m) axis. The above diagram shows an outline of the magnetic field distribution, and B is the beam ζ; the component that provides the deflection effect.*
3E has 4 permanent magnets G1, and has 5 side bee passage holes (
32m) - (32m) ◎This configuration reduces the component B, ie, the deflection magnetic field component, as shown in Fig. 2 ←). Further (;, Figure 3 (b) *
(c) 4=As shown, by setting 3 beams before and after the permanent magnet @ and bt<common C-Ku to a predetermined length), the above deflection component can be reduced by 2 I can do it.
以上のよう（二、磁気口−りの形状、永久磁石の配置等
Ｃ二よ）、はとんど偏向成分をも九ない磁界を形成する
ことが出来る。As described above (C2, shape of magnetic opening, arrangement of permanent magnets, etc.), it is possible to form a magnetic field with almost no deflection component.
本発明は以上述べた如き＃１とんど偏向磁界成分を有し
ない磁気集束装置砿；於て、さら（二３ビーム集束を＊
論させるものである。以下本発明につき詳細に説明する
。第４図は本発明の原理図である。The present invention utilizes a #1 magnetic focusing device having no deflection magnetic field component as described above;
It's something to debate. The present invention will be explained in detail below. FIG. 4 is a diagram showing the principle of the present invention.
電子ビーム、（４１ｍ）−（４１・）−（４１ｍ）は、
前述の如く、＃１とんど偏向成分のない磁気ヨーク局及
び−内部を通り磁気ヨークギャップ部（４４４二人射す
る＠磁気ヨークギャップ部（４４ｃ二於ける主磁界は図
示する如く４（スクリーン）方向を向き、かつ（４１ｍ
）−（４１ｍ）上ではビーム進行方向に対し所定の角θ
をもち外向き磁界成分Ｂｘを含むようにする。当然のこ
とながら電子ビーム（４１＠）上ではｂ方向磁界のみで
ある。この時のビームの受けるカを第４図（ｂ）に示す
。The electron beam, (41m)-(41・)-(41m), is
As mentioned above, the main magnetic field at the #1 magnetic yoke station where there is almost no deflection component and the magnetic yoke gap part (444) where two people are emitted through the inside of the magnetic yoke station (44c) is as shown in the figure. ) direction, and (41m
) - (41m), a predetermined angle θ with respect to the beam traveling direction
and includes an outward magnetic field component Bx. Naturally, there is only a b-direction magnetic field on the electron beam (41@). The force exerted on the beam at this time is shown in FIG. 4(b).
電子ビームの速度はＹｚのみであシ、上述の８１Ｂ二よ
り（４１ｍ）ではＹ−（ト）向きに（４１ｂ）ではＹ＋
ω向きに力を受ける。従って、磁気音−クギャップ（財
）通過後は電子ビーム（４１ｍ）はＹ−（Ｔ）向き、電
子ビーム（４１ｂ）はＹ＋Ｃｈ）向きの速度成分を有す
ることとナル。１１＆１１（ネック部端）側（２−）及
びスクリーンＩｆ （Ｚ＋）儒（−配置する曹−り＠
ｅ Ｂ’＜＝ついては非対称形状となす。即ち陰極側ヨ
ーク−は充分な均一磁界を得るよう充分な２方向長さを
有しスクリーン側ヨーク−′は所定の長さとする。この
ため第４図ａＢ−Ｂ’断面鴫二於ては磁界のシールド、
整形が弱くも成分が残っている。第４図ｃｌｉＢ−Ｂ’
断面に於けるビームが受ける力の説明図である。前述す
る如くこの断面での電子ビーム（４ｉｍ）はガ及び−マ
１である〇一方磁界は、−Ｂ、及び−Ｂｘをもつ。The velocity of the electron beam is only Yz, and from the above-mentioned 81B2 (41m) it is in the Y- (g) direction, and in (41b) it is Y+
Receives force in the direction of ω. Therefore, after passing through the magneto-acoustic gap, the electron beam (41m) has a velocity component in the Y-(T) direction, and the electron beam (41b) has a velocity component in the Y+Ch) direction. 11 & 11 (neck end) side (2-) and screen If (Z+)
e If B'<=, the shape is asymmetrical. That is, the cathode side yoke has sufficient length in two directions to obtain a sufficiently uniform magnetic field, and the screen side yoke has a predetermined length. For this reason, the cross section aB-B' in Figure 4 shows a magnetic field shield.
Even if the plastic surgery is weak, the ingredients remain. Figure 4 cliB-B'
It is an explanatory view of the force which a beam receives in a cross section. As mentioned above, the electron beam (4im) in this cross section has Ga and -Ma1, while the magnetic field has -B and -Bx.
従ってビームの受ける力は、１ｉＦｘ譚ｖｓ ｘ （−
ａｘ） ＊Ｆｙ＝（−ｖｙ）Ｘ（−Ｂｘ）であや、Ｘ一
方向及びＹ◆方向の力を受ける。従って、電子ビーム（
４１ｍ＋）は、Ｘ一方向速度とＹ十方向速度を得る。Ｙ
十方向速度はムーム′断面で受は九Ｙ一方向速度成分と
打ち消し合い全体としてはＹ方向速度成分が零でＸ一方
向速度成分のみが残ることとなる０逆位置シニあるビー
ム（４１■）では同様６：ｘ十方向速度成分を得る。Therefore, the force received by the beam is 1iFxtan vs x (-
ax) *Fy=(-vy) Therefore, the electron beam (
41m+) obtains the velocity in the X direction and the velocity in the Y direction. Y
The velocity in the 10 direction cancels out the velocity component in the 9 Y direction on the Moum' cross section, and the Y direction velocity component is zero as a whole, leaving only the X 1 direction velocity component (41). Then, similarly, obtain the velocity component in the 6:x direction.
以上の様６−両サイドビームは′センタービーム方向（
二集中効果を受けることとなる。第５図は本発明（二係
る一実施例の磁気音−タ部水平断面図である。（５１）
は陰極側Ｃ；配し九３ビーム共通畿気ｌ−り％ （５
２）、（５２）は本発明に係る相対向する磁気音−り、
（Ｓｔ）はスクリーン側磁気曹−りである０本発明（；
係る相対向する磁気音−り（５２）、（５２）は、互い
（二対向する面に３ビーム独立（二６箇部（５３）、（
５４）及び（５３）、（５４）を有する◎この円筒部は
陰極側磁気音−り（５２） ４二於てはセンター円筒（
５３）が両サイドの円筒（５４）に比し板厚が大きく形
成される。逆にスクリーン側磁気ヨーク（５２）に於て
はセンター円筒部されている◎
かかる形状の磁気音−り（５２）、（５２）−二よ）整
形される磁界は磁気ヨーク（５２） （：於ては板厚の
大きいセンター円筒（５３） ４二集中する傾向を示し
、磁気ヨ媚二集中する傾向を示す。As above, 6- Both side beams are in the center beam direction (
You will receive a double concentration effect. FIG. 5 is a horizontal cross-sectional view of a magnetic sounder section of an embodiment according to the present invention (51).
is cathode side C; Arrangement 93 beam common length L% (5
2) and (52) are opposing magnetic sounds according to the present invention,
(St) is the screen side magnetic layer 0 present invention (;
The magnetic sound beams (52), (52) facing each other have three independent beams (26 parts (53), (26 parts), (26 parts (53),
54), (53), and (54) ◎This cylindrical part has a cathode side magnetic sound hole (52) 42 has a center cylinder (
53) is formed to be thicker than the cylinders (54) on both sides. On the other hand, the magnetic yoke (52) on the screen side has a central cylindrical part.◎ The magnetic field shaped by the magnetic sound (52), (52)-2) is shaped by the magnetic yoke (52) (: In this case, the center cylinder (53) with a large plate thickness shows a tendency to concentrate, and shows a tendency to concentrate.
この結果、磁気１−り（５２）＊ （５２）間（：形成
される磁界は、サイド円筒（５４）、（５４）部では、
外向き成分をもつ。当然のことながら永久磁石の極性が
反転すれば逆となる。陰極側磁気ヨーク（５１）は、そ
の内部の磁界を充分均一としビームが実際上はとんど偏
向されないものであればよく３ビ一ム共通の磁気ヨーク
Ｃ−限るわけではない。As a result, the magnetic field formed between the magnetic 1 and (52) * (52) is as follows:
It has an outward component. Naturally, if the polarity of the permanent magnet is reversed, the opposite will occur. The cathode side magnetic yoke (51) is not limited to the magnetic yoke C common to all three beams, as long as the magnetic field therein is sufficiently uniform and the beam is practically not deflected.
また、スクリーン側磁気ｌ−り（５１）は、その高さや
形状によ）スクリーン側漏えい磁界の偏向威容を所定の
値Ｃ二制御′するものであればよい。The screen-side magnetic field (51) may be of any type as long as it controls the deflection intensity of the screen-side leakage magnetic field by a predetermined value (depending on its height and shape).
以上のよう（一本発明ζ；適用される磁気ｌ−りの３ビ
ーム儂＝与える効果は＃ｆ４図を用いて説明した通シで
あ〉詳細な説明は省略する。As described above (the present invention ζ; the effect provided by the three magnetic beams applied is the same as that described using diagram #f4), a detailed explanation will be omitted.
尚、本発明は円筒板厚のセンター、サイドバランスを変
えることによ）、磁界傾角を適宜変化させることが出来
るから、３ビーム集中効果４適宜に、設定することが出
来その汎用性は広く製作も容易である。尚、円筒部が対
向する磁気音−りの内部Ｃ二形成されている場合であっ
て４同様の効果があることは言うまでもない＠
以上の様（二本発明によれば、磁気県東装置自身によシ
３ビーム集中が実施され磁気集束方式の栓点を最大限活
かし、良好で信頼性の高い磁気集束型陰極線装置が提供
できる・In addition, in the present invention, since the magnetic field inclination can be changed appropriately by changing the center and side balance of the cylindrical plate thickness, the 3-beam concentration effect 4 can be set as appropriate, and its versatility can be widely manufactured. is also easy. It goes without saying that the same effect as in 4 can be obtained even if the cylindrical parts are formed inside C2 of opposing magnetic sound bars. We are able to provide a good and reliable magnetically focused cathode ray device by implementing 3-beam concentration and maximizing the plug point of the magnetic focusing method.
第１図は磁気集束量陰極線管装置の一例を示す概略構成
図、第２図（ＩＩ）及び第３図（１）は第１図の永久磁
石配置例を示すネック断面図、１１１２ｍ（ｂ）乃至（
ｄ）及び第３図中）乃至（Ｃ）は同じくネック側面図及
び磁界分布を説明する為の概略図％ＪＩＪ図（萄乃１！
（Ｃ）は本発明の詳細な説明する丸めの側面図及び断
面図、嬉５図は本発明の一１！施例に係る磁気ヨーク部
を示す概略水平断面図である◇
（４１ｍ）−（４１ａ）−（４１ｍ）・・・電子ビーム
（財）・・・磁気冒−クギャップ部
（５１）、（５１）・・・共通磁気音−り（５２）、（
５２）・・・相対向磁気ヨーク（７３１７） 代理人
弁理士 則 近 憲 佑 （なか１名）第２図
（ム） 仏。
第８図
第４図
（α）Fig. 1 is a schematic configuration diagram showing an example of a magnetic flux cathode ray tube device, Fig. 2 (II) and Fig. 3 (1) are neck sectional views showing an example of the permanent magnet arrangement in Fig. 1, and 1112 m (b). ~(
d) and Figure 3) to (C) are the neck side views and schematic diagrams for explaining the magnetic field distribution.
(C) is a rounded side view and sectional view explaining the present invention in detail, and Figure 5 is part 1 of the present invention! ◇ (41m)-(41a)-(41m)...Electron Beam Co., Ltd....Magnetic contact gap portion (51), (51) ...Common magnetic sound (52), (
52) ... Reciprocal magnetic yoke (7317) Representative Patent Attorney Kensuke Chika (1 member) Figure 2 (Mu) France. Figure 8 Figure 4 (α)
Claims (1)
れインライン配列の３個の電子ビームを射出し、制御手
段を備え九電子銃と前記外囲器パネル内面Ｃ：塗布形成
された螢光面及び螢光面、近傍に配設したシャドウマス
クを主える要素として構成される陰極線管であって、前
記電子ビームの集束手段として管軸方向磁界発生用永久
磁石と磁界整形磁気ヨークを備えた磁気集束型陰極線管
装置に於て、互いに対向する前記磁気璽−りは少くとも
独立し九３個の円筒状部分を有し、かつ前記円筒状部分
は前記ネック部端側の磁気６ｍ−りに於てはセンター円
筒の板厚が両サイド円筒−二比し厚く他方の磁気曹−り
に於ては、両サイド円筒の板厚がセンター円筒４＝比し
厚くなるように形成されてなることを特徴とする磁気集
束型陰極線管装置。 ２）′電子ビームを射出する陰極から一対の相対向する
磁気ヨーク間の領域礪：於ては、サイドビーム軸上ラジ
アル磁界成分が極力小さく、を九上記一対の相対向する
磁気曹−りとスクリーン間に於ては、サイドビーム軸上
６二所定のラジアル磁界成分が形成されるよう（二磁気
冒−りを前後で非対称としたことを特徴とする特許請求
の範匪第１項記載の磁気集束型陰極線管装置。[Claims] 1) Glass outside i! An electron gun and an inner surface of the envelope panel C: a coated fluorescent surface and fluorescent light; A cathode ray tube of a magnetic focusing type, which is constructed mainly of a shadow mask arranged near the surface of the tube, and is equipped with a permanent magnet for generating a magnetic field in the tube axis direction and a magnetic yoke for shaping the magnetic field as means for focusing the electron beam. In the pipe device, the magnetic rings facing each other have at least 93 independent cylindrical portions, and the cylindrical portions are arranged in a magnetic 6m direction on the end side of the neck portion. In the case of the other magnetic cylinder, the thickness of the center cylinder is thicker than that of both side cylinders, and the plate thickness of both side cylinders is thicker than that of the center cylinder. A magnetically focused cathode ray tube device. 2) 'Area between the pair of opposing magnetic yokes from the cathode that emits the electron beam: In this case, the radial magnetic field component on the axis of the side beam is as small as possible, and the area between the pair of opposing magnetic yokes Between the screens, a predetermined radial magnetic field component is formed on the axis of the side beam. Magnetic focusing cathode ray tube device.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13700781A JPS5840753A (en) | 1981-09-02 | 1981-09-02 | Magnetic-focusing-type cathode-ray tube |
| US06/411,364 US4495439A (en) | 1981-09-02 | 1982-08-25 | Magnetic focusing type cathode ray tube |
| DE8282107819T DE3275332D1 (en) | 1981-09-02 | 1982-08-25 | Magnetic focusing type cathode ray tube |
| EP82107819A EP0073472B1 (en) | 1981-09-02 | 1982-08-25 | Magnetic focusing type cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13700781A JPS5840753A (en) | 1981-09-02 | 1981-09-02 | Magnetic-focusing-type cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5840753A true JPS5840753A (en) | 1983-03-09 |
| JPH0216542B2 JPH0216542B2 (en) | 1990-04-17 |
Family
ID=15188622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13700781A Granted JPS5840753A (en) | 1981-09-02 | 1981-09-02 | Magnetic-focusing-type cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5840753A (en) |
-
1981
- 1981-09-02 JP JP13700781A patent/JPS5840753A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0216542B2 (en) | 1990-04-17 |
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