Cathode-ray tube with double coined electrode

Details Cathode-ray tube with double coined electrode Cathode-ray tube with double coined electrode

H - Electricity

01

J

316/17, 313/35.3

H01J 29/48 (2006.01) H01J 9/02 (2006.01)

Patent

CA 1184234

ABSTRACT: An 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.

382787

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