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11. 发明专利

JPS57118353A Electromagnetic focusing cathode-ray tube 失效
标题翻译：电磁聚焦阴极射线管
公开(公告)号：JPS57118353A
公开(公告)日：1982-07-23
申请号：JP305781
申请日：1981-01-14
申请人： Hitachi Ltd
发明人： SAKURAI SOUICHI , FUKUDA KIYOUHEI , OSAKABE KUNIHARU
IPC分类号： H01J29/50 , H01J29/56 , H01J29/64
CPC分类号： H01J29/56
摘要： PURPOSE:To obtain a beam spot of truely circular form by making the periphery of a yoke to have a non-circular shape like the other electrodes, providing a crescent and convex part on the upper and lower sides of the beam passing holes, and providing a crescent and concave part on both sides of the side beam passing holes. CONSTITUTION:A cathode 2, a first and a second grid 3 and 4, and a magnetic yoke 50 are placed in a bulb 1, and an annular permanent magnet 8 is placed outside the bulb 1, thereby constituting an electromagnetic focusing cathode-ray tube. The first and the second grids 3 and 4 and the magnetic yoke 50 have non- circular shapes since they are formed by cutting circular shapes. The parts corresponding to the cut parts of the yoke 50 is supported with supporting rods. A crescent and convex part 52 is provided on the upper and lower sides of beam passing holes 51C, 51S1 and 51S2, which are provided in a magnetic yoke 51, while a crescent and concave part 53 is provided on both sides of side beam passing holes 51S1 and 51S2. Consequently, the abberation caused due to the non-circular form of the yoke can be corrected, and the beam can be made to have a truely circular shape.
摘要翻译：目的：通过使磁轭的周边与其他电极相同的方式获得真圆形光束，在光束通孔的上下两侧设置月牙凸部，并提供侧梁通过孔两侧的新月形凹部。构成：将阴极2，第一栅极3和第二栅极4以及磁轭50配置在灯泡1内，将环形永久磁铁8配置在灯泡1的外侧，构成电磁聚焦阴极射线管。第一和第二格栅3和4以及磁轭50具有非圆形形状，因为它们通过切割圆形形成。对应于轭50的切割部分的部分由支撑杆支撑。在设置在磁轭51中的光束通过孔51C，51S1,51S2的上侧和下侧设置有新月凸部52，同时在侧梁通孔的两侧设置有新月凹部53 51S1和51S2。因此，可以校正由于磁轭的非圆形形成的偏移，并且可以使光束具有真正的圆形形状。

12. 发明专利

JPS5749151A Electromagnetic focussing type cathode-ray tube 失效
标题翻译：电磁聚焦型阴极射线管
公开(公告)号：JPS5749151A
公开(公告)日：1982-03-20
申请号：JP12452780
申请日：1980-09-10
申请人： Hitachi Ltd
发明人： SAKURAI SOUICHI , FUKUDA KIYOUHEI , OSAKABE KUNIHARU
IPC分类号： H01J29/64 , H01J29/68
CPC分类号： H01J29/68
摘要： PURPOSE:To easily adjust the condition of the focal image a beam by arranging a number of high permeability magnetic pieces on the external surface of a beam focussing permanent magnet on the outside of a bulb neck and adjusting the number of magnetic pieces. CONSTITUTION:A number of high permeability magnetic pieces 15 are spaced on the external or internal surface of a beam focussing permanent magnet 8 outside the bulb neck 1 of an electromagnetic focussing type cathode-ray tube at equal angles along the circumference of the tube axis and fixed by adhesive agent 16. Besides, the magnetic side passage of the permanent magnet 8 is adjusted by changing the arrangement of these magnetic pieces 15, the number of pieces, or their size. Then a magnetic principal lens can be adjusted by increasing and decreasing leak of magnetic flux. As a result, a beam can be adjusted to the optimum condition of focal image by a simple structure and an extremely easy and economical means.
摘要翻译：目的：通过在灯泡颈外侧的束聚焦永久磁铁的外表面上布置多个高磁导率磁片，并调整磁片的数量，轻松调整焦点图像的状态。构成：许多高磁导率磁性片15在电磁聚焦型阴极射线管的灯泡颈部1的外侧或外表面上沿着管轴的圆周以相等的角度间隔开，并且此外，通过改变这些磁片15的排列，数量或其尺寸来调节永久磁铁8的磁性侧通道。然后可以通过增加和减少磁通量的泄漏来调节磁性主透镜。结果，可以通过简单的结构和极其简单和经济的方式将光束调整到焦点图像的最佳状态。

13. 发明专利

JPS575250A ELECTROMAGNETIC FOCUSING CATHODE RAY TUBE 失效
公开(公告)号：JPS575250A
公开(公告)日：1982-01-12
申请号：JP7772880
申请日：1980-06-11
申请人： HITACHI LTD
发明人： SAKURAI SOUICHI , FUKUDA KIYOUHEI , OSAKABE KUNIHARU
IPC分类号： H01J29/50 , H01J29/51 , H01J29/64 , H01J29/70
摘要： PURPOSE:To improve the spot shape at the circumference of screen, by locating a deflection magnetic field control element for an electromagnetic focusing type inline electron gun to be axially symmetrical against the tube axis while to be asymmetrical against the horizontal and vertical faces containing the tube axis. CONSTITUTION:The electrodes 5, 5 constituting the electrostatic lens for an inline 3 electron gun are made of the magnetic material, then a circular permanent magnet 8 is arranged to form the magnetic main lens 13. A deflection magnetic field control element holder 14a is fixed at the fluorescent face side of said electrode 5 then a deflection magnetic field control element 14 is arranged. Thereafter both side beam pass holes for said holder 14a are provided while rotated from the horizontal line and said element 14 is rotated to be asymmetrical against the horizontal and the vertical faces. Since the both side beams rotated by the focusing magnetic field passes through the center of the deflection magnetic field control element, the halo is eliminated to improve the convergence.

14. 发明专利

JPS5519748A CATHODE RAY TUBE ELECTRON GUN 失效
公开(公告)号：JPS5519748A
公开(公告)日：1980-02-12
申请号：JP9262878
申请日：1978-07-31
申请人： HITACHI LTD
发明人： TAKADA MASANOBU , FUKUDA KIYOUHEI , SAKURAI SOUICHI
IPC分类号： H01J3/02 , H01J29/48 , H01J29/50
摘要： PURPOSE:To prevent the drift phenomena of electron beam easily and reliably by surrounding the electromagnetic collection space between a pair of magnetic yoke for forming convergent field provided along the electron beam path with highly conductive material and shielding electrostatically. CONSTITUTION:Electrostatic shield 13 is provided between a pair of magnetic yoke 5. Slit is made in the electrostatic shield 13 to prevent the shortcircuit. The electron group discharged from the cathode 2 is controlled by first and second grids 3, 4 and enters into the through-hole in the magnetic yoke 5, but the electrostatic shield 13 prevents the drift of electron beam.

15. 发明专利

JPS5519747A CATHODE RAY TUBE ELECTRON GUN 失效
公开(公告)号：JPS5519747A
公开(公告)日：1980-02-12
申请号：JP9262778
申请日：1978-07-31
申请人： HITACHI LTD
发明人： TAKADA MASANOBU , FUKUDA KIYOUHEI , SAKURAI SOUICHI
IPC分类号： H01J3/02 , H01J29/48 , H01J29/50
摘要： PURPOSE:To suppress unfavorable action caused by the leakage flux from permanent magnet, by covering the surface along the electron beam path of permanent magnet with soft ferro-magnetic board the end of which is placed in the proximity of magnetic yoke. CONSTITUTION:Magnetic shield 13 comprised of soft ferro-mangetic board covers the surface of permanent magnet 9 and the end is placed in the proximity of magnetic yoke 5. The electron group discharged from the cathode 2 is controlled by first and second grids to produce the electron beam which enters into the through-hole in the magnetic yoke 5. The magnetic shield 13 forms parallel magnetic shunt for the magnetic circuit comprising magnetic yoke 5, magnetic cylinder 8 and an intermediate gap, to shield the leakage flux from the side of permanent magnet 9.

16. 发明专利

JPS54139372A CATHODEERAY TUBE 失效
公开(公告)号：JPS54139372A
公开(公告)日：1979-10-29
申请号：JP4755278
申请日：1978-04-20
申请人： HITACHI LTD
发明人： FUKUDA KIYOUHEI , SAKURAI SOUICHI , TAKADA MASANOBU
IPC分类号： H01J29/51 , H04N9/28
摘要： PURPOSE:To prevent the deterioration of resolution around the screen by making the vertical deflecting leak magnetic field of the neck part of a color Braun tube, etc., into a pincushion magnetic field by the pole piece of a soft magnetic substance. CONSTITUTION:Pole piece 12 consisting of a soft magnetic substance such as Permalloy is arranged near holes 11, where electron beams pass, of shield cup 10 in the neck part of cathode-ray tube 3 having deflecting yoke in the external. Therefore, the magnetic field distribution of each beam passing hole is changed from leak magnetic field 13 in case of no pole piece to pincushion magnetic field 14, and the magnetic field is weak near the center and strong in the electron passing region of the vertically most outside circumference. Consequently, the electron deflection of the most outside circumference becomes large to reduce the halo (a large region of beam diameters downward in the screen upper part and upward in the lower part) which is easy to generate around the screen thereby improving resolution.

17. 发明专利

JPS5484966A CATHODEERAY TUBE ELECTRON GUN 失效
公开(公告)号：JPS5484966A
公开(公告)日：1979-07-06
申请号：JP15242277
申请日：1977-12-20
申请人： HITACHI LTD
发明人： SAKURAI SOUICHI , FUKUDA KIYOUHEI , TAKADA MASANOBU
IPC分类号： H01J29/48 , H01J3/02 , H01J29/54 , H01J29/62 , H01J29/64
摘要： PURPOSE:To facilitate focus adjustment and reduce weight and cubic volume by using a conductive permanent magnet as a focusing magnetic field generation means and storing this magnet in a vacuum outside vessel and applying the focus adjusting voltage to this magnet according to demand to focus an image on a fluorescent face. CONSTITUTION:Electrons from cathode electrode 3 heated by heater 2 are focused by a triple-pole lens, which is constituted by first and second grid electrodes 4 and 5, and a pre-focus lens, thereby forming crossovers. Next, focused electrons are accelerated with a fixed divergence by third grid electrode 6, and are focused by fourth grid electrode 8, and are irradiated onto a fluorescent substrance face. At this time, cylindrical permanent magnet 7b which is made from conductive material such as an Alnico-system magnet is arranged between electrodes 6 and 8. When prescribed voltage E2 is applied to magnet 7b from the external in this constitution, an image can be focused onto the fluorescent face completely, and no electromagnetic focusing coil provided outside the vacuum outside vessel is required.

18. 发明专利

JPS5482162A MAGNETIC FOCUS CATHODEERAY TUBE 失效
公开(公告)号：JPS5482162A
公开(公告)日：1979-06-30
申请号：JP14937277
申请日：1977-12-14
申请人： HITACHI LTD
发明人： FUKUDA KIYOUHEI , SAKURAI SOUICHI , TAKADA MASANOBU
IPC分类号： H01J29/48 , H01J29/54 , H01J29/64
摘要： PURPOSE:To reduce the spherical aberration with a small caliber magnet by giving a large thickness at the center part and a small thickness at the both edge parts of the electron beam condensing cylindrical magnet which is distributed at the neck part of a cathode-ray tube. CONSTITUTION:Permanent magnet 7 of a small caliber featuring a cylindrical form and being magnetized in the axial direction is districuted inside neck part 3 of cathode-ray tube in order to condense the electron beams. In this case, the thickness of magnet 7 is increased (t3) at the center part and decreased at the both end parts (t1, t2) with the length increased in the axial direction respectively. Thus, the magnet features a shape in that the center part swells toward the tube axis. As a result, such magnetic flux distribution can be obtained that the wide and effective focusing function region is ensured for the spherical aberration like a large-caliver magnet and unlike the magnetic flux distribution featuring the reduced magnetic field at the magnet center part in case a small-caliber cylindrical magnet is increased just in the length.

19. 发明专利

JPS5455164A CATHODEERAY TUBE OF ELECTROMAGNETIC FOCUSING TYPE 失效
公开(公告)号：JPS5455164A
公开(公告)日：1979-05-02
申请号：JP12143477
申请日：1977-10-12
申请人： HITACHI LTD
发明人： FUKUDA KIYOUHEI , SAKURAI SOUICHI
IPC分类号： H01J29/54 , H01J29/64
摘要： PURPOSE:To reduce the deterioration in resolution basing upon field deterioration due to a rise in temperature, by arranging a magnetic material high in temperature, coefficient of magnetic permeability at the circumference of a permanent magnet as an electromagnetic condenser lens. CONSTITUTION:Cylindrical permanent magnet 2 fitted to the neck part of cathode- ray tube 1 is attached axially, and surrounding it, magnetic material 4, which has characteristics decreasing its permeability as the temperature rises, such as soft magnetic ferrite with its Curie temperature of approximate 100 deg.C is mounted, so that magnetic-field distribution 5 will be formedwholly. If not magnetic material 4 is provided, the field intensity inside tube decereases as the temperature rises and the electron-beam spot expands, thereby deteriorating its resolution. When magnetic maerial 4 is mounted, the entire magnetic flux generafted by magnet 2 is large at a low temperature, but the flux is absorbed partially by magnetic material 4, and at a high temperature, on the other hand, the flux generated by magnet is decreased, but the permeability of magnetic material 4 also becomes small. Consequently, the absorbed flux decreases, so that the field intensity inside tube will be constant regardless of the change in temperature.

20. 发明专利

JPS53145561A ELECTRONIC GUN 失效
公开(公告)号：JPS53145561A
公开(公告)日：1978-12-18
申请号：JP5976577
申请日：1977-05-25
申请人： HITACHI LTD
发明人： SAKURAI SOUICHI , ANDOU KUNIO , FUKUZAWA KENICHI
IPC分类号： H01J3/02 , H01J29/50
摘要： PURPOSE:To obtain a color picture tube featuring good focus properties by setting the cylinder length of the electrode at the side of the fluorescent screen so that a vertically long electron beam may be secured for the center one among three pieces of the electronic gun aligned linearly.

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