EP 0045547 A2 19820210 - Method of fabricating an electron gun electrode member for a cathode-ray tube and cathode ray tube comprising an electron gun electrode member fabricated by this method.
Title (en)
Method of fabricating an electron gun electrode member for a cathode-ray tube and cathode ray tube comprising an electron gun electrode member fabricated by this method.
Title (de)
Herstellungsverfahren eines Elektronenkanonenelementes für eine Kathodenstrahlröhre und mit einem nach diesem Verfahren hergestellten Elektronenkanonenelement versehene Kathodenstrahlröhre.
Title (fr)
Méthode de fabrication d'un élément de canon à électrons pour tubes à rayons cathodiques et tube à rayons cathodiques comprenant un élément de canon à électrons fabriqué selon cette méthode.
Publication
Application
Priority
US 17516580 A 19800804
Abstract (en)
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 recesss, such being an important influence in achieving improved beam shaping lensing.
IPC 1-7
IPC 8 full level
H01J 9/14 (2006.01); H01J 9/02 (2006.01); H01J 29/48 (2006.01)
CPC (source: EP)
H01J 9/02 (2013.01); H01J 29/488 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0045547 A2 19820210; EP 0045547 A3 19820623; EP 0045547 B1 19840926; CA 1184234 A 19850319; DE 3166330 D1 19841031; ES 504476 A0 19820501; ES 8204880 A1 19820501; JP H0312417 B2 19910220; JP S5763746 A 19820417
DOCDB simple family (application)
EP 81200833 A 19810721; CA 382787 A 19810729; DE 3166330 T 19810721; ES 504476 A 19810731; JP 12003581 A 19810801