Beam shaping CRT electrode and method of fabricating same

Details Beam shaping CRT electrode and method of fabricating same Beam shaping CRT electrode and method of fabricating same

1982-07-30

1987-02-24

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

H01J 914

Patent

active

046454691

ABSTRACT:
A CRT electron gun electrode is provided with an improved beam shaping region having an elongated recess coined in the upper electrode surface and an opposed coined depression in the lower surface. The double coining fabrication method assures a sharp perimetrical edge about at least the central portion of the recess, such being an important influence in achieving improved beam shaping lensing.

REFERENCES:
patent: 2888588 (1959-05-01), Dichter
patent: 3767953 (1973-10-01), Bossers
patent: 4307498 (1981-12-01), Say
patent: 4366414 (1982-12-01), Hatayama et al.

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