In-line type electron gun enabling easy centering between main e

Details In-line type electron gun enabling easy centering between main e In-line type electron gun enabling easy centering between main e

1991-11-27

1993-05-04

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, 313425, 313426, 313460, 313452, H01J 2954, H01J 2902

Patent

active

052085074

ABSTRACT:
A screen electrode of an electron gun is by uniting main electrode with an auxiliary electrode. The main electrode has three circular beam passing holes and a pair of guide holes for insertion in arbors of a jig disposed symmetrically around a center beam passing hole thereof. The auxiliary electrode has three elongated beam passing holes and a pair of guide slots for insertion in the arbors of the jig formed in a top edge and a bottom edge of the auxiliary electrode and coaxially positioned with the guide holes, thereby enabling easy centering of the main and auxiliary electrodes.

REFERENCES:
patent: 4181870 (1980-01-01), Stevens
patent: 4443736 (1984-04-01), Chen
patent: 4899091 (1990-02-01), Odenthal

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