Title:
【発明の名称】陰極線管用多段集束形電子銃
Document Type and Number:
Japanese Patent JP2607312
Kind Code:
B2
Abstract:
A multistep focusing electron gun for a cathode ray tube comprising at least a unipotential auxiliary lens (G5 to G7) and a bipotential major lens (G7, G8). The electron beam passing hole of the middle electrode (G6) of three successive electrodes forming the unipotential auxiliary lens which is supplied with a low potential is in the form of a equilateral parallelogram and has dimensions such that the electron beam passing holes of the electrodes disposed at the front and rear of the middle electrode can be circumscribed. Thus, the intensity of the unipotential auxiliary lens is weakened without reducing the mechanical strength of the electrode, and also the change of the relative position between the electrodes resulted from the structure change is inhibited.
Inventors:
Zhao Zhu
Application Number:
JP1033091A
Publication Date:
May 07, 1997
Filing Date:
January 04, 1991
Export Citation:
Assignee:
Samsung Electric Tube Co., Ltd.
International Classes:
H01J29/48; H01J29/50; (IPC1-7): H01J29/48
Domestic Patent References:
| JP5782943A | ||||
| JP54150961A | ||||
| JP54120581A | ||||
| JP62237642A | ||||
| JP58197639A | ||||
| JP5848341A |
Attorney, Agent or Firm:
Shunsuke Nakao (1 person outside)