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公开(公告)号：US4473773A
公开(公告)日：1984-09-25
申请号：US287794
申请日：1981-07-28
申请人： Soichi Sakurai , Kyohei Fukuda , Kuniharu Osakabe
发明人： Soichi Sakurai , Kyohei Fukuda , Kuniharu Osakabe
CPC分类号： H01J29/68
摘要： An improved in-line type electromagnetic focusing cathode-ray tube which comprises magnetic yokes, a focusing magnetic field generating permanent magnet, a deflecting magnetic field control element and a cup-shaped spacer member for separating the magnetic yokes from the deflecting magnetic field control element. The deflecting magnetic field control element is disposed at a distance l.gtoreq.0.26 D from an end of the magnetic yoke closest to a fluorescent screen, where D is an outer diameter of the magnetic yoke, so that a beam spot on the fluorescent screen has substantially circular shape to attain an excellent focusing characteristic.
摘要翻译： 一种改进的在线式电磁聚焦阴极射线管，其包括磁轭，聚焦磁场产生永磁体，偏转磁场控制元件和用于将磁轭与偏转磁场控制元件分离的杯形间隔件 。 偏转磁场控制元件从最接近荧光屏的磁轭的端部设置在距离l> / = 0.26D处，其中D是磁轭的外径，使得荧光屏上的光束点 具有大致圆形以获得优异的聚焦特性。
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公开(公告)号：US4460844A
公开(公告)日：1984-07-17
申请号：US329045
申请日：1981-12-09
申请人： Soichi Sakurai , Kyohei Fukuda , Kuniharu Osakabe
发明人： Soichi Sakurai , Kyohei Fukuda , Kuniharu Osakabe
CPC分类号： H01J29/503 , H01J29/68
摘要： A color television picture tube of three in-line gun type wherein a ring-shaped ferrite permanent magnet or magnets are disposed around a neck portion of the tube, at least a pair of mutually-opposing pole pieces made of highly permeable magnetic material are provided within the tube neck portion as a part of the gun assembly so as to be magnetized by the ring magnet or magnets and to form an electron beam magnetic focusing lens system. In the picture tube, the pole pieces are each of a substantially elliptical cross section as viewed from a plane perpendicular to the tube axis, and spaces are provided between an inner wall of the tube neck portion and the pole pieces to accommodate support rods for gun assembling. There are selected to fall in particular ranges the ratio of the outer diameter to inner diameter of the permanent magnet, the ratio of the thickness to inner diameter thereof, the ratio of the thickness to gap length between the opposing pole pieces, and the ratio of the tube-axial length of the pole piece disposed on the side of a phosphor screen to the tube-axial length of the pole piece disposed on the side of cathode electrodes.
摘要翻译： 一种三线式枪式彩色电视显像管，其中环形铁氧体永磁体或磁铁设置在管的颈部周围，提供至少一对由高度可渗透的磁性材料制成的相互相对的极片 在管颈部内作为枪组件的一部分，以便被环形磁铁或磁体磁化，并形成电子束磁聚焦透镜系统。 在显像管中，从垂直于管轴的平面看，极片各自为大致椭圆形的横截面，并且在管颈部分的内壁和极片之间设置空间以容纳枪的支撑杆 组装。 选择特定的范围是永磁体的外径与内径的比率，厚度与内径之比，相对极片之间的厚度与间隙长度之比以及比例 设置在荧光屏一侧的极靴的管轴长度设置在阴极侧的极片的管轴向长度上。
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公开(公告)号：US4439710A
公开(公告)日：1984-03-27
申请号：US279598
申请日：1981-07-01
申请人： Kuniharu Osakabe , Isao Yoshimi , Kyohei Fukuda
发明人： Kuniharu Osakabe , Isao Yoshimi , Kyohei Fukuda
CPC分类号： H01J29/68
摘要： An electromagnetic focusing cathode-ray tube in which plural pairs of magnetic material members are arranged within the tube along the tube axis, the magnetic material members in each pair are disposed to oppose each other in the direction of the tube axis with a gap defined therebetween, and the plural magnetic material member pairs and one or more permanent magnet disposed internally or externally of the tube are combined such that magnetic focusing fields having their senses or directions opposite to each other in the direction of the tube axis are formed at the respective gaps associated with the adjacent magnetic material pairs.
摘要翻译： 一种电磁聚焦阴极射线管，其中多对磁性材料构件沿着管轴布置在管内，每对中的磁性材料构件沿着管轴方向彼此相对设置，间隔开间隙 并且多个磁性材料构件对和设置在管的内部或外部的一个或多个永磁体被组合，使得在其各个间隙处形成具有彼此在管轴方向上相反的感测或方向的磁性聚焦场 与相邻的磁性材料对相关联。
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4.发明授权
公开(公告)号：US4310780A
公开(公告)日：1982-01-12
申请号：US72913
申请日：1979-09-06
申请人： Soichi Sakurai , Kyohei Fukuda , Masanobu Takata
发明人： Soichi Sakurai , Kyohei Fukuda , Masanobu Takata
CPC分类号： H01J29/64
摘要： An electron beam focusing structure for a three in-line gun color picture tube comprises a permanent magnet or a focusing coil and a pair of magnetic yokes made of magnetic material high in magnetic permeability and having beam-passing through-holes and being disposed opposite to each other and perpendicular to the axis of the tube, for controlling the focusing magnetic fields generated for the plural electron beams by the permanent magnet or focusing coil in such a manner that the beams converge near the phosphor screen and focused respectively on the phosphor screen. The magnetic yokes are provided with cylindrical magnetic members extending in the axial direction of the tube, the cylindrical magnetic members for the center beam being different in length from the cylindrical magnetic members for the side beams, whereby the effective pole gap lengths for the respective beams between the magnetic yokes are so controlled as to provide optimum focusing fields for the respective beams. As an alternative form of the magnetic members, recesses are provided in the periphery of the throughholes with different depths.
摘要翻译： 一种用于三行串联枪彩色显象管的电子束聚焦结构，包括永磁体或聚焦线圈以及由磁导率高的磁性材料制成并具有光束通过通孔并与之相对设置的一对磁轭 彼此垂直于管的轴线，用于通过永磁体或聚焦线圈控制由多个电子束产生的聚焦磁场，使得光束在荧光屏附近会聚并分别聚焦在荧光屏上。 磁轭设置有沿管轴向延伸的圆柱形磁性构件，用于中心梁的圆柱形磁性构件的长度与用于侧梁的圆柱形磁性构件的长度不同，由此各个梁的有效磁极间隙长度 在磁轭之间被控制以便为各个光束提供最佳聚焦场。 作为磁性构件的替代形式，在具有不同深度的通孔的周边设置有凹部。
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公开(公告)号：US5029993A
公开(公告)日：1991-07-09
申请号：US417561
申请日：1989-10-05
申请人： Kyohei Fukuda , Soichi Sakurai , Koji Hirata , Shigeru Mori
发明人： Kyohei Fukuda , Soichi Sakurai , Koji Hirata , Shigeru Mori
摘要： An optical system of a projection television receiver for projecting pictures from a picture tube onto a screen, comprising a fluorescent face constituting the tube face of the receiver tube having a nonspherical shape in such a direction as to compensate the curve of the image face of the projected picture on the screen, and further comprising lenses arranged from the screen side to the tube face of the picture tube in the order of:(A) a first lens having relatively weak power (reciprocal of focal distance) and having a nonspherical shape at least at one face;(B) a second lens having relatively strong positive power;(C) a third lens having relatively weak power and having a nonspherical shape at least at one face; and(D) a fourth lens having relatively strong negative power and having a concave shape at the face of the screen side.
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公开(公告)号：US4884879A
公开(公告)日：1989-12-05
申请号：US911070
申请日：1986-09-24
申请人： Kyohei Fukuda , Soichi Sakurai , Koji Hirata , Shigeru Mori
发明人： Kyohei Fukuda , Soichi Sakurai , Koji Hirata , Shigeru Mori
摘要： An optical system of a projection television receiver for projecting pictures from a picture tube onto a screen, comprising a fluorescent face constituting the tube face of the receiver tube having a nonspherical shape in such a direction as to compensate the curve of the image face of the projected picture on the screen, and further comprising lenses arranged from the screen side to the tube face of the picture tube in the order of:(A) a first lens having relatively weak power (reciprocal of focal distance) and having a nonspherical shape at least at one face;(B) a second lens having relatively strong positive power;(C) a third lens having relatively weak power and having a nonspherical shape at least at one face; and(D) a fourth lens having relatively strong negative power and having a concave shape at the face of the screen side.
摘要翻译： 一种投影电视接收机的光学系统，用于将图像从显像管投影到屏幕上，包括构成接收管的管面的荧光面，其方向具有非球面形状，以补偿图像的图像面的曲线 并且还包括从屏幕侧到显像管的管面布置的透镜，其顺序为：（A）具有相对弱的功率（焦距的往复）并且具有非球面形状的第一透镜 最少在一个脸上 （B）具有相对较强正功率的第二透镜; （C）至少在一个面上具有较弱功率并具有非球形形状的第三透镜; 和（D）具有相对较强的负功率并且在屏幕侧的表面具有凹形形状的第四透镜。
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公开(公告)号：US4824224A
公开(公告)日：1989-04-25
申请号：US948251
申请日：1986-12-31
申请人： Kyohei Fukuda , Hiroki Yoshikawa , Shigeru Mori , Koji Hirata , Soichi Sakurai
发明人： Kyohei Fukuda , Hiroki Yoshikawa , Shigeru Mori , Koji Hirata , Soichi Sakurai
摘要： An improved lens system for a projection television is described. The lens system is designed to be used with a cathode ray tube having a face glass with an aspheric surface having phosphor elements mounted thereto. The aspheric surface of the face glass has its maximum radius at the optical axis and is of lesser radius outwardly thereof. From the screen, the lens system companies a first aspheric lens of relatively weak power, a second biconvex lens of relatively high positive power, a third aspheric lens of weak positive power and a fourth lens having a concave face on its screen sider and of relatively large negative power.
摘要翻译： 描述了用于投影电视的改进的透镜系统。 透镜系统设计成与具有带有安装有荧光体元件的非球面的面玻璃的阴极射线管一起使用。 面玻璃的非球面表面在光轴处具有最大半径，并且其外侧具有较小的半径。 从屏幕上看，透镜系统公司具有功率相对较弱的第一非球面透镜，具有相对高正功率的第二双凸透镜，弱正功率的第三非球面透镜和在屏幕上具有凹面的第四透镜，并且相对 大负功率
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公开(公告)号：US4362964A
公开(公告)日：1982-12-07
申请号：US89095
申请日：1979-10-29
申请人： Soichi Sakurai , Kyohei Fukuda , Masanobu Takata
发明人： Soichi Sakurai , Kyohei Fukuda , Masanobu Takata
CPC分类号： H01J29/68
摘要： There is disclosed an in-line type three-gun color picture tube with a couple of magnetic members inside its neck portion and a further magnet outside its neck portion. The respective magnetic members are provided with three through-holes permitting electron beams emitted from the electron guns to pass through and are disposed separately in a beam traveling path, so that the periphery of the through-holes of one of the magnetic members is magnetized in S pole and that of the other magnetic member is magnetized in N pole, and accordingly a focusing magnetic field is formed between the respective pairs of the through-holes which are opposite to each other. The magnetic pieces are disposed between the adjacent through-holes to intensify the magnetic field in the alignment of the through-holes which is weakened due to the presence of the through-holes, so that the focusing magnetic field in the alignment of the through-holes is compensated and accordingly the respective focusing magnetic fields become symmetrical with respect to their axes.
摘要翻译： 公开了一种在其颈部内具有一对磁性构件的直列式三枪彩色显像管，在其颈部外部还有一个磁体。 各个磁性部件设置有三个通孔，允许从电子枪发射的电子束通过，并且分别设置在光束传播路径中，使得一个磁性部件的通孔的周边被磁化 S极和另一个磁性构件的磁极在N极中被磁化，因此在彼此相对的各对通孔之间形成聚焦磁场。 磁片被布置在相邻的通孔之间，以增强由于通孔的存在而使通孔对准的磁场，使得通孔对准中的聚焦磁场， 孔被补偿，因此相应的聚焦磁场相对于它们的轴线对称。
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公开(公告)号：US4948237A
公开(公告)日：1990-08-14
申请号：US188482
申请日：1988-04-29
申请人： Koji Hirata , Kyohei Fukuda , Hiroki Yoshikawa , Shigeru Mori , Masayuki Muranaka , Isao Yoshizaki , Shigeru Inaoka , Hiroshi Jitsukata
发明人： Koji Hirata , Kyohei Fukuda , Hiroki Yoshikawa , Shigeru Mori , Masayuki Muranaka , Isao Yoshizaki , Shigeru Inaoka , Hiroshi Jitsukata
CPC分类号： G02B13/18
摘要： In a projection system wherein an optical system comprising a first lens for correcting a spherical aberration dependent on the aperture length, a second lens for enlargement and a third lens for correcting a field curvature, projects an image reproduced on a CRT having a curved phosphor surface, onto a screen, the third lens is spaced from the CRT so that the region of the phosphor surface which again totally reflects a light which has been totally reflected by a screen-side surface of the third lens is limited to the edge portion of an effective region of the phosphor surface.
摘要翻译： 在一种投影系统中，其中包括用于校正取决于孔径长度的球面像差的第一透镜的光学系统，用于放大的第二透镜和用于校正场曲率的第三透镜，投影在具有弯曲荧光粉表面的CRT上再现的图像 在屏幕上，第三透镜与CRT间隔开，使得再次完全反射已被第三透镜的屏幕侧表面完全反射的光的荧光体表面的区域被限制到第三透镜的边缘部分 荧光粉表面的有效区域。
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公开(公告)号：US4933599A
公开(公告)日：1990-06-12
申请号：US277931
申请日：1988-11-30
申请人： Kyohei Fukuda
发明人： Kyohei Fukuda
摘要： A projection system comprising from the image end a screen, a lens in which a core portion including the lens axis accomplishes a convergence function and in which a peripheral portion including a lens edge thereof accomplishes the divergence function, a convex lens element, a concave lens element and a CRT having a face glass whose inner surface is coated with a phosphor and is so curved to form a fourth lens element with a curvature center within a core portion including the lens axis is disposed on the screen side of the projection system, the curvature radius of each part of the core portion of the fourth lens increasing thereof in accordance with increments of the semi-aperture distance of each part from the lens axis.
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