公开(公告)号：CA1212143A

公开(公告)日：1986-09-30

申请号：CA451256

申请日：1984-04-04

Applicant: RCA CORP

Inventor： BECHIS DENNIS J ,  CHEN HSING-YAO ,  HUGHES RICHARD H

IPC: H01J29/50 ,  H01J29/48 ,  H01J29/58

Abstract: of the Invention A color picture tube includes a screen and an improved inline gun for generating and directing three inline electron beams along separate paths toward the screen. The improved electron gun has an asymmetric beam-forming region and an asymmetric main focus lens. The asymmetry of the main focus lens is matched with the asymmetry of the beam-forming region to focus substantially all portions of each of the beams at the screen.