JPH0766746B2 - Electron gun structure of beam straight type electron tube - Google Patents
Electron gun structure of beam straight type electron tubeInfo
- Publication number
- JPH0766746B2 JPH0766746B2 JP62159780A JP15978087A JPH0766746B2 JP H0766746 B2 JPH0766746 B2 JP H0766746B2 JP 62159780 A JP62159780 A JP 62159780A JP 15978087 A JP15978087 A JP 15978087A JP H0766746 B2 JPH0766746 B2 JP H0766746B2
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- electrode
- grid
- electron
- cathode
- curvature
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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、電子ビーム直進形電子管の電子銃構体に関
する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) [0001] The present invention relates to an electron gun assembly of an electron beam rectilinear electron tube.
（従来の技術） 進行波管やクライストロンなどの電子ビーム直進形電子
管の電子銃構体として、複数個のビーム制御格子電極を
備えたものがある。その場合、格子電極は互いに目合わ
せされた格子線を有する。このような目合わせされた格
子電極を備える電子銃構体は、単格子電子銃構体に比べ
て格子電流が少なく、カットオフ特性にも優れ、信頼性
も高く、電源も小形化できるという特長を有している。(Prior Art) As an electron gun structure of an electron beam rectilinear type electron tube such as a traveling wave tube or a klystron, there is one having a plurality of beam control grid electrodes. In that case, the grid electrodes have grid lines aligned with each other. The electron gun assembly equipped with such aligned grid electrodes has the features that the grid current is smaller than that of the single grid electron gun assembly, the cutoff characteristics are excellent, the reliability is high, and the power supply can be downsized. is doing.
従来一般的なこの種のビーム直進形電子管の電子銃構体
は概ね第４図に示すように構成されている。同図におい
て、符号11は熱電子放出陰極、12はその球面からなる電
子放射面、13は第１格子電極、13aはその放射状格子線
を円周方向に繋ぐリング状の格子線、14は第２格子電
極、14aはその放射状格子線を円周方向に繋ぐリング状
の格子線、15はビーム集束電極、16はそのビーム通過
孔、17は加速電極、18はそのビーム通過孔、ｅは電子ビ
ームの包絡線をそれぞれあらわしている。An electron gun assembly of a conventional beam straight-advanced electron tube of this type is generally constructed as shown in FIG. In the figure, reference numeral 11 is a thermionic emission cathode, 12 is an electron emission surface composed of its spherical surface, 13 is a first grid electrode, 13a is a ring-shaped grid line that connects the radial grid lines in the circumferential direction, and 14 is a first grid electrode. Two grid electrodes, 14a is a ring-shaped grid line that connects the radial grid lines in the circumferential direction, 15 is a beam focusing electrode, 16 is a beam passage hole, 17 is an accelerating electrode, 18 is a beam passage hole, and e is an electron. Each envelope of the beam is shown.
陰極11の電子放射面12は、ビーム軸ｚ上の点Ｏを中心と
する曲率半径Rcの球面を有している。この陰極11の前方
すなわちビーム下流に所定間隔gc1（例えば約0.2mm）を
おいて、同じ点Ｏを中心としRcよりも小さい曲率半径R1
の球面を有する第１格子電極13が配設されている。さら
にこの第１格子電極13の下流に所定間隔g12（例えば約
0.3mm）をおいて、同じ点Ｏを中心としR1よりも小さい
曲率半径R2の球面を有する第２格子電極14が配設されて
いる。第１格子電極13と第２格子電極14の各放射状格子
線は目合わせされている。ビーム軸上の点Ｏと陰極の電
子放射面12の外周端（直径例えば約13mm）とのなす角度
θは、約60〜70度程度に設定されている。各格子電極の
リング状格子線13a、14aは、同様に点Ｏに向かう一直線
上に位置し目合わせされている。このようにして陰極お
よび両格子電極は、同心球的に配置されている。The electron emission surface 12 of the cathode 11 has a spherical surface having a radius of curvature Rc centered on a point O on the beam axis z. A predetermined gap gc1 (for example, about 0.2 mm) is provided in front of the cathode 11, that is, downstream of the beam, and the radius of curvature R1 around the same point O is smaller than Rc.
A first grid electrode 13 having a spherical surface is arranged. Further, a predetermined distance g12 (for example, about
A second grid electrode 14 having a spherical surface with a radius of curvature R2 smaller than R1 centering on the same point O is provided. The radial grid lines of the first grid electrode 13 and the second grid electrode 14 are aligned. The angle θ formed by the point O on the beam axis and the outer peripheral edge (diameter, for example, about 13 mm) of the electron emission surface 12 of the cathode is set to about 60 to 70 degrees. The ring-shaped grid lines 13a and 14a of each grid electrode are similarly positioned and aligned on a straight line toward the point O. In this way, the cathode and both grid electrodes are arranged concentrically.
なお、この電子銃構体は例えばパルス動作において、陰
極11に対して、第１格子電極13およびビーム集束電極15
が同電位に、第２格子電極が±500Vp-p程度でパルス制
御され、加速電極17が直流約30kV程度の電位にされる。In addition, in the electron gun structure, for example, in the pulse operation, the first grid electrode 13 and the beam focusing electrode 15 are attached to the cathode 11.
To the same potential, the second grid electrode is pulse-controlled at about ± 500 Vp-p, and the acceleration electrode 17 is set to a potential of about 30 kV DC.
（発明が解決しようとする問題点） 上述のような従来のビーム直進形電子管の電子銃構体に
おいて、熱電子放出陰極の前方に微小間隔を保ってビー
ム軸ｚ上の１点Ｏを中心として同心球的に、且つ各格子
電極の放射状格子線およびリング状格子線を点Ｏに向け
て高精度に目合わせして組立てることは、きわめて困難
である。とくに各格子電極の曲率半径およびリング状格
子線の位置は、陰極面の曲率半径や陰極、各格子電極の
相互間隔を正確に計算に含めて定め、製作しなければな
らず、しかもその組立においてそれに一致させなければ
ならない。したがってまた、管種や動作条件が異なれば
それに適合するように設計、製作し直さなければならな
いという不都合がある。また、陰極と第１格子電極との
ビーム集束方向に沿う間隔は、中心部に比べて周辺部が
より大きく変化してしまい、ビーム制御特性が劣化する
不都合がある。(Problems to be Solved by the Invention) In the conventional electron gun assembly of a beam straight-advanced electron tube as described above, a concentric circle is formed around a point O on the beam axis z with a minute gap in front of the thermionic emission cathode. It is extremely difficult to assemble the radial grid lines and the ring grid lines of each grid electrode toward the point O with high accuracy by spherical alignment. In particular, the radius of curvature of each grid electrode and the position of the ring-shaped grid line must be manufactured by accurately determining the radius of curvature of the cathode surface, the cathode, and the mutual spacing of each grid electrode in the calculation, and in assembling them. You have to match it. Therefore, if there is a difference in pipe type and operating conditions, there is the inconvenience of having to redesign and remanufacture to suit them. In addition, the distance between the cathode and the first grating electrode along the beam focusing direction changes more greatly in the peripheral portion than in the central portion, which causes a problem that the beam control characteristics deteriorate.
この発明は、以上のような不都合を解消し各格子電極の
製作および陰極を含めた組立てが比較的容易で且つ電子
ビームの制御特性の劣化が少ないビーム直進形電子管の
電子銃構体を提供することを目的とする。The present invention solves the above problems and provides an electron gun assembly of a beam straight-advanced electron tube in which the production of each grid electrode and the assembly including the cathode are relatively easy and the control characteristics of the electron beam are less deteriorated. With the goal.
［発明の構成］ （問題点を解決するための手段） この発明は、陰極の電子放射面と各格子電極面とが常温
時において互いに同等の曲率半径を有してなり、且つ陰
極からすぐ下流の第１格子電極に比べてその下流に配置
された第２格子電極が大きい熱膨張率を有する導電材料
で構成されているビーム直進形電子管の電子銃構体であ
る。[Structure of the Invention] (Means for Solving the Problems) According to the present invention, the electron emission surface of the cathode and the respective lattice electrode surfaces have the same radius of curvature at room temperature, and are located immediately downstream from the cathode. In the electron gun assembly of the beam straight-forward electron tube, the second lattice electrode arranged downstream of the first lattice electrode of No. 1 is made of a conductive material having a large coefficient of thermal expansion.
（作用） この発明によれば、各格子電極はいずれも陰極の電子放
射面の曲率半径に合う曲率半径で製作すればよく、また
放射状格子線の目合わせは当然として各格子電極は陰極
に対してビーム軸上で所定間隔となるように単にビーム
軸方向に平行移動して組立てればよく、製作、組立てと
も簡略にできる。また動作時の各電極の熱膨張は、陰極
および第１格子電極相互のビーム集束方向に沿う間隔を
全面にわたり均等化する方向に変化するので、ビーム制
御特性が低下することがない。こうして組立て上も特性
上も好都合なビーム直進形電子管の電子銃構体が得られ
る。(Operation) According to the present invention, each grid electrode may be manufactured with a radius of curvature that matches the radius of curvature of the electron emitting surface of the cathode, and the alignment of the radial grid lines is naturally made so that each grid electrode is It suffices to simply move in parallel in the beam axis direction and assemble so as to have a predetermined interval on the beam axis, and manufacturing and assembling can be simplified. Further, the thermal expansion of each electrode during operation changes in the direction in which the distance between the cathode and the first grid electrode along the beam focusing direction is equalized over the entire surface, so that the beam control characteristics do not deteriorate. In this way, an electron gun assembly of a beam straight type electron tube which is convenient in terms of assembly and characteristics can be obtained.
（実施例） 以下この発明の実施例を図面を参照して説明する。なお
同一部分は同一符号であらわす。Embodiment An embodiment of the present invention will be described below with reference to the drawings. The same parts are represented by the same symbols.
第１図および第２図に示す実施例は、電子ビーム軸ｚに
沿って陰極11、複数個の格子電極すなわち第１格子電極
13、第２格子電極14、ビーム集束電極15、加速電極17が
それぞれ所定間隔をおいて配置されている。そこで、第
１格子電極13の加速電極側の面の曲率半径R1、および第
２格子電極14の加速電極側の面の曲率半径R2は、常温時
（25℃）においていずれも陰極の電子放射面12の曲率半
径Rcと同等に形成されている。そして電子放射面12から
ビーム軸ｚに沿って下流側に各格子電極を平行移動した
形で、所定の間隔gc1（例えば約0.2mm）をおいて第１格
子電極13が配置され、またそれから同様に所定間隔g12
（例えば約0.3mm）をおいて第２格子電極14配置されて
いる。したがって陰極の電子放射面の曲率中心Ocに対し
て第１格子電極の曲率中心O1はビーム軸ｚに沿って間隔
gc1にこの第１格子電極の厚さを加えた寸法だけ下流側
に位置している。また同様に第２格子電極の曲率半径O2
はそれからさらに間隔g12にこの第２格子電極の厚さを
加えた寸法だけ下流に位置している。The embodiment shown in FIGS. 1 and 2 includes a cathode 11, a plurality of grid electrodes, that is, a first grid electrode along the electron beam axis z.
13, the second grating electrode 14, the beam focusing electrode 15, and the accelerating electrode 17 are arranged at predetermined intervals. Therefore, the radius of curvature R1 of the surface of the first lattice electrode 13 on the acceleration electrode side and the radius of curvature R2 of the surface of the second lattice electrode 14 on the acceleration electrode side are both the electron emission surface of the cathode at room temperature (25 ° C.). The radius of curvature Rc is equal to 12. Then, the first grid electrode 13 is arranged at a predetermined interval gc1 (for example, about 0.2 mm) in a form in which the respective grid electrodes are moved in parallel to the downstream side along the beam axis z from the electron emission surface 12, and from then on. At predetermined intervals g12
The second grid electrode 14 is arranged at a distance (for example, about 0.3 mm). Therefore, the center of curvature O1 of the first grid electrode is spaced from the center of curvature Oc of the electron emission surface of the cathode along the beam axis z.
It is located on the downstream side by the size of gc1 plus the thickness of the first grid electrode. Similarly, the radius of curvature O2 of the second grid electrode
Is then located downstream by a distance g12 plus the thickness of this second grid electrode.
陰極11は含浸形陰極で、その凹球面状の電子放射面12の
外径寸法は例えば13mmで、曲率中心Ocと電子放射面12の
外周端とのなす角度は、約60度に設定されている。第１
格子電極および第２格子電極は、第２図に示すような格
子パターンを有している。第１格子電極の場合を例を説
明すれば、この例で２箇所に設けられたリング状格子線
13aは、多数の放射状格子線13bを円周方向に繋いでお
り、これら放射状格子線は一体形成された外周支持部13
cにより保持されている。この外周支持部の所定箇所に
は位置決め用の切欠き部13dが設けられている。第２格
子電極14もこれと同じ格子線パターンで且つ同じ寸法で
形成されている。第１格子電極13は、厚さ約0.1mmのモ
リブデン（Mo）又はMoを主成分とする合金、例えばRe-M
o合金等で構成されている。それによって熱陰極に近接
するこの第１格子電極の耐熱性は十分得られ、また熱膨
張が小さく抑えられる。一方、第２格子電極14は厚さ約
0.15mmの銅（Cu）又はCuを主成分とする合金、例えばホ
スニック青銅（商品名）のような銅98％以上、ニッケル
1.1％、リン0.2％の合金等で構成されている。それによ
って二次電子の放出が少なく、また良好な熱伝導により
格子線外への熱放散性がすぐれており、安定な動作が維
持される。しかも、この第２格子電極14の熱膨張率は、
第１格子電極よりも大きく、約３倍である。これら両格
子電極は、予め、各薄板材料を陰極の電子放射面の曲率
半径と同じ曲率半径にプレス成形し、同一の放電加工電
極により同一の格子線パターンとなるように放電加工し
て得る。そして外周支持部に設けられた相対応する位置
決め用切欠き部を治具を用いて合致させ、各電極の外周
部の相互間隔がビーム軸方向に沿って所定の間隔gc1、g
12に相当する寸法だけ平行移動して組立てる。それによ
って、各格子電極の相対応するリング状格子線13a、14a
は、同じ直径寸法を有し、したがってビーム軸ｚに対し
てその配列方向Ｐは平行をなして位置している。こうし
て両格子電極は各格子線がビーム軸に沿って目合わせさ
れ組立てられている。The cathode 11 is an impregnated cathode, the outer diameter of the concave spherical electron emission surface 12 is, for example, 13 mm, the angle between the center of curvature Oc and the outer peripheral edge of the electron emission surface 12 is set to about 60 degrees. There is. First
The grid electrode and the second grid electrode have a grid pattern as shown in FIG. An example of the case of the first grid electrode will be described. In this example, ring-shaped grid lines provided at two locations.
13a connects a large number of radial grid lines 13b in the circumferential direction, and these radial grid lines are integrally formed on the outer peripheral support 13
held by c. A notch 13d for positioning is provided at a predetermined position of the outer peripheral support portion. The second grid electrode 14 is also formed with the same grid line pattern and the same size. The first grid electrode 13 is made of molybdenum (Mo) having a thickness of about 0.1 mm or an alloy containing Mo as a main component, such as Re-M.
It is made of alloy. As a result, the heat resistance of the first grid electrode close to the hot cathode is sufficiently obtained, and the thermal expansion is suppressed to be small. On the other hand, the second grid electrode 14 has a thickness of about
0.15 mm copper (Cu) or an alloy mainly composed of Cu, for example, phosnic bronze (trade name), copper 98% or more, nickel
It is composed of an alloy of 1.1% and phosphorus 0.2%. As a result, the emission of secondary electrons is small, and good heat conduction provides excellent heat dissipation to the outside of the lattice lines, thus maintaining stable operation. Moreover, the coefficient of thermal expansion of the second lattice electrode 14 is
It is larger than the first grid electrode, about 3 times. These two grid electrodes are obtained by press-molding each thin plate material in advance to have the same radius of curvature as the radius of curvature of the electron emitting surface of the cathode, and performing electric discharge machining with the same electric discharge machining electrode so as to form the same grid line pattern. Then, the corresponding positioning notches provided on the outer peripheral support portion are matched with each other by using a jig, and the mutual intervals of the outer peripheral portions of the respective electrodes are set to predetermined intervals gc1, g along the beam axis direction.
Assemble by moving in parallel by a dimension equivalent to 12. As a result, the corresponding ring-shaped grid lines 13a and 14a of each grid electrode are
Have the same diameter dimension and are therefore arranged parallel to the beam axis z in the direction of arrangement P. Thus, both grid electrodes are assembled by aligning each grid line along the beam axis.
なお、陰極の電子放射面の曲率半径Rc、第１格子の電極
曲率半径R1、および第２格子電極の曲率半径R2は、互い
に同等に形成されているが、これらすべての電極の曲率
半径を完全に一致させることが理想的であるが、製作の
誤差範囲として互いにおよそその曲率半径の±５％の範
囲内、より好ましくは±３％の範囲内にあれば実用上支
障がなく、その場合も同等の範囲に含まれる。The radius of curvature Rc of the electron emitting surface of the cathode, the radius of curvature R1 of the electrode of the first grid, and the radius of curvature R2 of the second grid electrode are formed to be equal to each other, but the radius of curvature of all these electrodes is perfect. It is ideal to match with, but as a manufacturing error range, there is no practical problem if they are within ± 5% of the radius of curvature of each other, more preferably within ± 3%, and in that case as well. It is included in the equivalent range.
このように構成された電子銃構体の動作において、格子
電極近傍の電子ビームｅの流れ方向に対して第２格子電
極のリング状格子線が第１格子電極のリング状格子線13
aの影に完全には隠れないので、電子ビームの一部が捕
捉されるが、両格子電極の主要な格子線である放射状格
子線はビームの流れ方向に対して完全に目合わせされて
おり、その格子線面積に比べてきわめてわずかであるリ
ング状格子線への捕捉ビーム量はほとんど無視し得る程
度にとどまる。したがって、電子ビームｅの層流の劣化
はほとんどなく、また第２格子電極からの二次電子放射
も実用上問題にならない程度に少ない。それにもまし
て、各電極の曲率半径の設定、製作、相互間隔の設定が
容易で、且つ高精度の組立てができる利点が重要であ
り、大量生産でも特性のよく揃った電子銃構体が得られ
る。また動作時の各電極の熱膨張は、第３図に示すよう
になる。すなはち、陰極は、外周が拘束されていないの
で、その凹球面状電子放射面の曲率半径が点線で示すよ
うに大きくなる方向に膨張する。それに対して各格子電
極の格子線は外周が低温で比較的剛性のあるリング状外
周支持部により支持されているので曲率半径がそれぞれ
点線で示すように小さくなる方向に中央部が陰極側に膨
らむ。とくに、陰極に接近していて相対的に高温となる
第１格子電極が相対的に低熱膨張率の材料で構成され、
相対的に低い温度にとどまる第２格子電極が高い熱膨張
率の材料で構成されているので、両格子電極の曲率半径
は略均等化するように熱変形する。従って、動作中は陰
極及び両格子電極の電子ビームｅの流れ方向すなわちビ
ーム集束方向に沿う相互間隔が全面にわたって均等化す
るように変化する。こうして、ビーム制御特性は低下す
ることがない。こうして組立ても動作特性も好都合なビ
ーム直進形電子管の電子銃構体が得られる。In the operation of the electron gun assembly thus configured, the ring-shaped lattice line of the second lattice electrode is the ring-shaped lattice line 13 of the first lattice electrode in the flow direction of the electron beam e near the lattice electrode.
Since a part of the electron beam is trapped because it is not completely hidden by the shadow of a, the radial lattice lines, which are the main lattice lines of both lattice electrodes, are perfectly aligned with the beam flow direction. However, the amount of trapped beam on the ring-shaped lattice line, which is extremely small compared to the area of the lattice line, is almost negligible. Therefore, the laminar flow of the electron beam e is hardly deteriorated, and the secondary electron emission from the second lattice electrode is so small that it does not pose a practical problem. In addition, it is important that the radius of curvature of each electrode is set, manufactured, and the mutual spacing is easily set, and that the electrodes can be assembled with high precision, and an electron gun assembly having good characteristics can be obtained even in mass production. The thermal expansion of each electrode during operation is as shown in FIG. That is, since the outer circumference of the cathode is not constrained, the cathode expands in the direction in which the radius of curvature of the concave spherical electron emitting surface increases as shown by the dotted line. On the other hand, since the outer periphery of the lattice line of each lattice electrode is supported by the ring-shaped outer periphery support portion which is relatively rigid at low temperature, the central portion bulges toward the cathode side in the direction in which the radius of curvature becomes smaller as shown by the dotted line. . In particular, the first lattice electrode, which is close to the cathode and has a relatively high temperature, is made of a material having a relatively low coefficient of thermal expansion,
Since the second lattice electrode that stays at a relatively low temperature is made of a material having a high coefficient of thermal expansion, the lattice electrodes are thermally deformed so that the radii of curvature of the two lattice electrodes are substantially equalized. Therefore, during the operation, the mutual intervals of the cathode and both grid electrodes along the flow direction of the electron beam e, that is, the beam focusing direction are changed so as to be equalized over the entire surface. In this way, the beam control characteristic does not deteriorate. In this way, an electron gun assembly of a beam straight-advanced electron tube can be obtained which has favorable operating characteristics even when assembled.
なお以上の実施例では格子電極が２個の場合について説
明したが、それ以上の格子電極を備えた電子銃構体にも
この発明は適用できる。In the above embodiments, the case where the number of grid electrodes is two has been described, but the present invention is also applicable to an electron gun assembly having more grid electrodes.
［発明の効果］ この発明によれば、陰極および各格子電極は同一の曲率
半径で製作すればよく、また各格子電極は陰極の前方に
所定間隔となるように単にビーム軸方向に平行移動して
組立てればよく、製作、組立てとも簡略にできる。また
動作時の熱膨張は、陰極および第１格子電極のビーム集
束方向に沿う相互間隔を全面にわたり均等化する方向に
変化するとともに第1,第２格子電極の熱膨張が均等化さ
れる傾向になるので、ビーム制御特性が低下することが
ない。こうして組立て上も特性上も好都合なビーム直進
形電子管の電子銃構体が得られる。EFFECTS OF THE INVENTION According to the present invention, the cathode and each grid electrode may be manufactured with the same radius of curvature, and each grid electrode is simply moved in parallel in the beam axis direction so as to have a predetermined interval in front of the cathode. It suffices to simply assemble and assemble, and the manufacturing and assembling can be simplified. In addition, the thermal expansion during operation changes in a direction that equalizes the mutual spacing along the beam focusing direction of the cathode and the first lattice electrode over the entire surface, and the thermal expansion of the first and second lattice electrodes tends to be equalized. Therefore, the beam control characteristic does not deteriorate. In this way, an electron gun assembly of a beam straight type electron tube which is convenient in terms of assembly and characteristics can be obtained.
第１図はこの発明の実施例を示す要部縦断面図、第２図
はその格子電極の正面図、第３図は動作時の各電極の熱
膨張を示す概略縦断面図、第４図は従来の構造を示す要
部縦断面図である。 11……陰極、11a……電子放射面、13……第１格子電
極、13a……リング状格子線、13b……放射状格子線、14
……第２格子電極、Rc……陰極面の曲率半径、R1……第
１格子電極の曲率半径、R2……第２格子電極の曲率半
径、ｚ……ビーム軸。FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a front view of its lattice electrode, FIG. 3 is a schematic longitudinal sectional view showing thermal expansion of each electrode during operation, and FIG. FIG. 4 is a longitudinal sectional view of a main part showing a conventional structure. 11 ... Cathode, 11a ... Electron emitting surface, 13 ... First grid electrode, 13a ... Ring grid line, 13b ... Radial grid line, 14
...... Second grid electrode, Rc ... Cathode radius of curvature, R1 ... First grid electrode curvature radius, R2 ... Second grid electrode curvature radius, z ... Beam axis.
Claims (1)
の陰極の電子放射面の前方に互いに所定間隔をおいて配
置され夫々目合わせされ且つ外周がリング状外周支持部
により支持された凹球面放射状格子線を備えた複数個の
格子電極と、この格子電極のビーム下流に配置されたビ
ーム集束電極と、このビーム集束電極の下流に配置され
た加速電極とを具備してなるビーム直進形電子管の電子
銃構体において、 上記陰極の電子放射面と上記各格子電極の上記加速電極
側の面とが常温時において互いに同等の曲率半径を有し
てなり、且つ陰極からすぐ下流の第１格子電極に比べて
その下流に配置された第２格子電極が大きい熱膨脹率を
有する導電材料で構成されていることを特徴とするビー
ム直進形電子管の電子銃構体。1. A cathode having a concave spherical electron emitting surface and a cathode arranged in front of the electron emitting surface at a predetermined distance from each other and aligned with each other, and the outer periphery thereof is supported by a ring-shaped outer peripheral support portion. A beam rectilinear beam including a plurality of grid electrodes having concave spherical radial grid lines, a beam focusing electrode arranged downstream of the beam of the grid electrode, and an accelerating electrode arranged downstream of the beam focusing electrode. In an electron gun assembly of a shaped electron tube, the electron emission surface of the cathode and the surface of each of the grid electrodes on the side of the acceleration electrode have the same radius of curvature at room temperature, and the first electrode immediately downstream from the cathode. An electron gun assembly for a beam straight-type electron tube, wherein a second lattice electrode arranged downstream of the lattice electrode is made of a conductive material having a large coefficient of thermal expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62159780A JPH0766746B2 (en) | 1987-06-29 | 1987-06-29 | Electron gun structure of beam straight type electron tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62159780A JPH0766746B2 (en) | 1987-06-29 | 1987-06-29 | Electron gun structure of beam straight type electron tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS646344A JPS646344A (en) | 1989-01-10 |
| JPH0766746B2 true JPH0766746B2 (en) | 1995-07-19 |
Family
ID=15701104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62159780A Expired - Fee Related JPH0766746B2 (en) | 1987-06-29 | 1987-06-29 | Electron gun structure of beam straight type electron tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0766746B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3080490B1 (en) | 2018-04-20 | 2020-07-17 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | SOLID BATTERY ELECTROLYTE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117867A (en) * | 1974-07-31 | 1976-02-13 | Kyowa Electric & Chemical | KUMITATEDANA |
| JPS62133640A (en) * | 1985-12-05 | 1987-06-16 | Nec Corp | Microwave tube furnishing electron gun with grid |
-
1987
- 1987-06-29 JP JP62159780A patent/JPH0766746B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS646344A (en) | 1989-01-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |