-
公开(公告)号：US4540916A
公开(公告)日：1985-09-10
申请号：US437335
申请日：1982-10-28
CPC分类号： H01J29/488
摘要： An electron gun for a television camera tube comprises a cathode for emission of electrons, a first grid disposed subsequently to the cathode and having a first aperture supplied with a positive voltage relative to the cathode, a second grid disposed subsequently to the first grid and having a second aperture supplied with a higher positive voltage than that supplied to the first grid, and an intermediate grid interposed between the first and second grids and having a hole. The intermediate grid forms a divergent electron lens near the first aperture between the first and second grids. An electron beam having passed through the first aperture is once diverged by the divergent electron lens to form a crossover at an axial position of the gun which is remote from the first grid and at which the potential on the beam axis is high, whereby broadening of the width of the velocity distribution of extracted electrons can be suppressed to a minimum and the amount of beam current passing through the second aperture can be increased.
摘要翻译： 一种用于电视摄像机管的电子枪包括用于发射电子的阴极，设置在阴极附近并具有相对于阴极提供正电压的第一孔径的第一栅极，以及随后设置在第一栅极上的第二栅极， 提供具有比提供给第一格栅的正电压高的正电压的第二孔，以及插入在第一栅极和第二栅极之间并具有孔的中间栅格。 中间栅格在第一和第二栅极之间的第一孔附近形成发散电子透镜。 已经通过第一孔的电子束一旦被发散的电子透镜分开，在枪的轴向位置处形成一个与第一格栅远离的轴的交叉点，并且在该轴处的波束轴上的电位高，从而使 提取的电子的速度分布的宽度可以被抑制到最小，并且可以增加通过第二孔径的束流的量。
-
公开(公告)号：US4682077A
公开(公告)日：1987-07-21
申请号：US755014
申请日：1985-07-15
申请人： Masanori Maruyama , Masamichi Moriya , Shinichi Kato , Masakazu Fukushima , Yasuhiko Nonaka , Chihaya Ogusu
发明人： Masanori Maruyama , Masamichi Moriya , Shinichi Kato , Masakazu Fukushima , Yasuhiko Nonaka , Chihaya Ogusu
CPC分类号： H01J29/488
摘要： A camera tube device for use in a television camera comprises an electron gun including a cathode electrode for emission of an electron beam, and first and second grid electrodes respectively having apertures for controlling the diameter of the electron beam. The aperture of the second grid electrode is sufficiently smaller than the aperture of the first grid electrode. The first grid electrode is applied with a positive voltage relative to the cathode electrode and the second grid electrode is applied with a positive voltage relative to the cathode electrode which is higher than that applied to the first grid electrode. The positive voltage applied to the first grid electrode has such a value that forms the electron beam having passed through the aperture of the first grid electrode into a laminar flow beam. As the level of brightness of the object increases, the positive voltage applied to the first grid electrode is decreased to increase the amount of electron beam passing through the aperture of the second grid electrode.
摘要翻译： 用于电视摄像机的相机管装置包括电子枪，其包括用于发射电子束的阴极，以及分别具有用于控制电子束直径的孔的第一和第二栅电极。 第二栅电极的孔径比第一栅电极的孔径小得多。 第一栅电极相对于阴极被施加正电压，并且第二栅极施加相对于阴极的正电压，其高于施加到第一栅电极的正电压。 施加到第一栅电极的正电压具有这样的值，其形成已经通过第一栅电极的孔的电子束成层流束。 当物体的亮度水平增加时，施加到第一栅极的正电压减小，以增加通过第二栅电极的孔径的电子束的量。
-
公开(公告)号：US4467243A
公开(公告)日：1984-08-21
申请号：US315869
申请日：1981-10-28
CPC分类号： H01J29/488
摘要： An electron gun is disclosed which includes a thermionic cathode for emitting an electron beam, a grid having a first aperture for controlling the diameter of the electron beam, and an anode having a second aperture for catching a part of the electron beam having passed through the first aperture; and in which the diameter of the first aperture is smaller than or equal to the diameter of the second aperture, and the grid and the anode are applied with positive potentials relative to a cathode potential, for example, with a voltage of 5 to tens of volts and a voltage of 100 to 500 volts, respectively, to form a uniform axial field between the grid and the anode, thereby generating a laminar flow electron beam having a constant current density.
摘要翻译： 公开了一种电子枪，其包括用于发射电子束的热离子阴极，具有用于控制电子束的直径的第一孔的栅格，以及具有用于捕获已通过电子束的电子束的一部分的第二孔的阳极 第一光圈; 并且其中第一孔的直径小于或等于第二孔的直径，并且栅极和阳极相对于阴极电位施加正电位，例如以5至几十的电压施加 伏特和100至500伏的电压，以在格栅和阳极之间形成均匀的轴向场，由此产生具有恒定电流密度的层流电子束。
-
公开(公告)号：US4866337A
公开(公告)日：1989-09-12
申请号：US15378
申请日：1987-02-17
CPC分类号： H01J29/74
摘要： In an electromagnetic focusing electrostatic type image pick-up tube the electrostatic deflecting electrodes formed on the inner surface of the tube consist of 2 pairs of electrodes. Each of these electrostatic deflecting electrodes has a zig-zag shape from the electron gun towards the target. This zig-zag shape is twisted in the circumferential direction around the axis of the tube and variation rates of this twist amount are different, depending on the position in the axial direction.
摘要翻译： 在电磁聚焦静电型图像拾取管中，形成在管的内表面上的静电偏转电极由2对电极组成。 这些静电偏转电极中的每一个具有从电子枪朝向目标的之字形。 这种锯齿形状围绕管的轴线在圆周方向上扭曲，并且该扭转量的变化率根据轴向方向上的位置而不同。
-
公开(公告)号：US4792721A
公开(公告)日：1988-12-20
申请号：US39275
申请日：1987-04-17
CPC分类号： H01J29/74
摘要： A cathode-ray tube comprises an electron beam generating section provided at one end of the tube, a target provided at the other end of the tube, and a group of electrodes provided on an inner wall of the tube for focusing and deflecting an electron beam. The electrode group includes first and second electrodes between the one and other ends of the tube in the mentioned order. The first electrode has a lead electrode portion for supplying an electric potential to the second electrode. The lead electrode portion extends along the tube axis with a zigzag form in which an angle .angle.MZN of a convave apex M and a convex apex N adjacent thereto spanning in a circumferential direction centering the tube axis Z is not smaller than 115.degree. or a spiral form which rotates centering the tube axis at a rotation angle not smaller than 420.degree..
摘要翻译： 阴极射线管包括设置在管的一端的电子束产生部分，设置在管的另一端的靶和设置在管的内壁上的一组电极，用于聚焦和偏转电子束 。 电极组包括按照所述顺序在管的一端和另一端之间的第一和第二电极。 第一电极具有用于向第二电极提供电位的引线电极部分。 引线电极部分以管状轴线的方式延伸，其中，在Z轴的Z轴方向上，与其轴线Z对齐的圆周方向上的交错顶点M的角度角MZN与其相邻的凸顶点N不小于115°， 使管轴以不小于420°的旋转角定心旋转的形式。
-
6.发明授权Cylindrical image pickup tube having electrostatic deflection electrodes formed of straight line pattern yokes 失效具有由直线图案轭形成的静电偏转电极的圆柱形图像拾取管
公开(公告)号：US4701668A
公开(公告)日：1987-10-20
申请号：US867155
申请日：1986-05-27
CPC分类号： H01J29/74
摘要： A magnetic focusing and electrostatic deflecting image pickup tube comprises electrostatic deflection electrodes each constituted by a straight arrow pattern yoke composed of straight line segments arrayed in a linear zigzag pattern. The pattern yoke has a twist angle set at a value not greater than 105.degree.. An average value of angles formed by each upper apex and two lower apices adjacent to the upper apex of the zigzag pattern yoke with reference to the axis of the tube lies within a range of 116.degree. to 127.degree..
摘要翻译： 磁聚焦和静电偏转图像拾取管包括静电偏转电极，每个静电偏转电极由以直线形之字形图案排列的直线段组成的直箭头图案磁轭构成。 图案磁轭的扭转角设定在105度以下。 相对于管的轴线，每个上顶点和相邻于之字形图形磁轭的上顶点的两个下顶点形成的角度的平均值在116°至127°的范围内。
-
7.发明授权
公开(公告)号：US4354138A
公开(公告)日：1982-10-12
申请号：US192995
申请日：1980-10-02
CPC分类号： H01J29/566 , H01J29/46
摘要： A television camera tube with electrostatic focusing and magnetic deflection comprises in an cylindrical envelope a beam current control, a main lens section and a sixth grid in the form of a mesh electrode. The beam current control section includes a cathode, a first grid and a second grid with an electron beam limiting diaphragm in this order. The main lens section includes third, fourth and fifth grids in the form of cylindrical electrodes disposed in this order. Around the cylindrical envelope is mounted a magnetic deflection coil whose length along the envelope axis is 0.18 to 0.40 times the distance from the beam limiting diaphragm to the mesh electrode.
摘要翻译： 具有静电聚焦和磁偏转的电视摄像机管包括圆柱形外壳，光束电流控制，主透镜部分和网状电极形式的第六格栅。 束电流控制部分依次包括阴极，第一栅格和具有电子束限制膜的第二栅极。 主透镜部分包括依次布置的圆柱形电极形式的第三，第四和第五格栅。 在圆柱形外壳周围安装有磁偏转线圈，其沿着包络线的长度是从束限制膜片到网状电极的距离的0.18至0.40倍。
-
公开(公告)号：US4427917A
公开(公告)日：1984-01-24
申请号：US416916
申请日：1982-09-13
摘要： A television camera tube with electrostatic focusing comprising a triode section at the first stage having a cathode a first grid and a second grid, an electrostatic focusing lens section at the next stage having a third, fourth and fifth grids of cylindrical electrode configuration, and a sixth grid with mesh electrode configuration at the last stage, these electrodes being coaxially arranged in a cylindrical glass envelope, the length of the fourth grid is greater than 1.15 times the inner diameter thereof but equal to or smaller than 2.30 times the inner diameter thereof.
摘要翻译： 一种具有静电聚焦的电视摄像机管，包括在第一阶段具有第一栅极和第二栅极的阴极的三极管部分，在下一阶段的静电聚焦透镜部分具有圆柱形电极结构的第三，第四和第五栅极，以及 在最后阶段具有网状电极结构的第六栅极，这些电极同轴地布置在圆柱形玻璃外壳中，第四栅极的长度大于其内径的1.15倍但等于或小于其内径的2.30倍。
-
公开(公告)号：US4560899A
公开(公告)日：1985-12-24
申请号：US449198
申请日：1982-12-13
CPC分类号： H01J29/488 , H01J29/622
摘要： An electron beam focusing lens comprises at least two cylindrical electrodes one of which is to be applied with a high potential and the other of which is to be applied with a low potential. A plate electrode having an aperture at a central portion thereof is provided at an end face of the high-potential cylindrical electrode opposite to the low-potential cylindrical electrode. The plate electrode may be of a circularly curved shape which is projected toward the low-potential cylindrical electrode between the outer and inner circumference of the plate electrode.
摘要翻译： 电子束聚焦透镜包括至少两个圆柱形电极，其中一个被施加高电位，另一个被施加低电位。 在高电位圆柱形电极的与低电位圆柱形电极相对的端面处设置有在其中心部分具有孔的平板电极。 板状电极可以是在平板电极的外周和内周之间向低电位圆柱形电极突出的圆形弯曲形状。
-
公开(公告)号：US4363996A
公开(公告)日：1982-12-14
申请号：US215335
申请日：1980-12-11
CPC分类号： H01J29/48 , H01J29/488 , H01J29/52
摘要： A vidicon type camera tube comprising a beam current control section including a thermionic cathode, a first grid having an aperture of diameter d.sub.1, a second grid having an aperture of diameter d.sub.2 and a beam disc having a diaphragm of diameter d.sub.3 disposed at a distance of l along the tube axis from the second grid. The tube further comprises a main lens section constituted of cylindrical electrodes. The diameters d.sub.1, d.sub.2 and d.sub.3 and the distance l are so determined that the value of (d.sub.2 /l)(d.sub.3 /d.sub.1).sup.2 may lie in the range where the difference of the effective cathode loading is positive.
摘要翻译： 一种视频摄像机管，其包括具有热离子阴极的射束电流控制部分，具有直径为d1的孔径的第一格栅，具有直径为d2的孔径的第二格栅和具有设置在距离为 l沿着管轴从第二格。 该管还包括由圆柱形电极构成的主透镜部分。 直径d1，d2和d3以及距离l被确定为（d2 / 1）（d3 / d1）2的值可以在有效阴极负载的差为正的范围内。
-
-
-
-
-
-
-
-
-
搜索结果
50 条记录 (耗时 0.024 秒)
