Electrode of electron gun and working method thereof

Abstract

Abstract PURPOSE: To scheme to reduce the number of components and fabrication man- hour and improve accuracy by forming integrally the lenses part having sufficient height cylinder part. CONSTITUTION: A lower hole 32 is formed on a material plate 30 through drilling work 31. Then projection work 33 is performed. Then projection work 34 with drawing is performed. The thickness of projected body is made thinner gradually and the height increases. Then the lower hole 36 for burring is formed through drilling work 35. In the last stage, if burring work 37 is processed, the lenses parts 39aW39c having cylinder part 38aW38c are formed. Thus the thickness of the plate at the root of the contiguous cylinder part 38aW38c can be suppressed, and the lenses part having sufficient height of cylinder part in performance can be formed without injuring the flatness of the periphery of the opening part. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Minoru Yabe
• 👤 Shigeharu Hatayama
• 👤 Mamoru Ikeda
• 👤 Satoru Endo
• 👤 Masaaki Yamauchi

Bibliographic Details