公开(公告)号：US4498026A

公开(公告)日：1985-02-05

申请号：US462450

申请日：1983-01-31

申请人： Masaaki Yamauchi ,  Minoru Yabe ,  Shoji Shirai ,  Hidemasa Komoro ,  Kenichi Matsuda

发明人： Masaaki Yamauchi ,  Minoru Yabe ,  Shoji Shirai ,  Hidemasa Komoro ,  Kenichi Matsuda

IPC分类号： H01J29/50 ,  H01J29/56

CPC分类号： H01J29/566 ,  H01J29/503

摘要： An electron gun for a color picture tube comprises opposing cup-shaped electrodes each having a plurality of openings laterally aligned in a row, the electrodes being combined such that the openings face each other to form electron lenses. The openings are formed in flat bottom walls of said electrodes, a width of a bridge portion between adjacent openings is 0.5 to 1.5 times a thickness of the bottom wall of each electrode, and corrective plate electrodes are arranged to oppose bridge portions with a predetermined distance therefrom. The electrodes are combined such that spherical aberration of said electron lenses as a whole can be reduced when one of the electrodes is applied with a voltage which is higher than that applied to the other.

摘要翻译： 一种用于彩色显像管的电子枪包括相对的杯状电极，每个具有多个开口横向排成一行，所述电极组合使得所述开口彼此面对以形成电子透镜。 开口形成在所述电极的平坦底壁中，相邻开口之间的桥接部分的宽度为每个电极的底壁厚度的0.5至1.5倍，校正板电极布置成与预定距离的桥接部分相对 由此。 电极被组合，使得当电极中的一个被施加高于施加到另一个电极的电压时，整个电子透镜的球面像差可以减小。