Electron-optical device having separate elongate electron-emitti

Details Electron-optical device having separate elongate electron-emitti Electron-optical device having separate elongate electron-emitti

1996-09-04

1999-01-26

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313414, 313310, 313338, H01J 2950

Patent

active

058642013

ABSTRACT:
Electron-optical device having two elongate emitting regions arranged symmetrically with respect to a longitudinal axis for producing two electron beams having an elongate cross-section. By means of electron grids, the two beams are focused at the same point of an electron target arranged transversely to the longitudinal axis and having a short central axis and a long central axis. The elongate emitting regions have their smallest cross-section parallel to the scanning direction of a device, cooperating with the electron-optical device, for scanning a target arranged transversely to the longitudinal axis.

REFERENCES:
patent: 4091311 (1978-05-01), Mendelsohn et al.
patent: 4749904 (1988-06-01), Vasterink et al.

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