| 摘要 |
<p>An electron gun for a color cathode ray tube for realizing a good quality image includes a triode having a cathode (11), a control electrode (12), and a screen electrode (13), and a main lens system having first to fourth focusing electrodes (14-17) and an anode (18). The first focusing electrode (14) and the fourth focusing electrode (17) are electrically connected to each other, and the second focusing electrode (15) and the third focusing electrode (16) are electrically connected to the control electrode (12) and the screen electrode (13), respectively. By forming a multistep auxiliary lens, the influence of spherical aberration and astigmatism on the electron beam is decreased and, in turn, an image of good quality can be realized. <IMAGE></p> |
