Spray gun for a direct-vision image storage tube and an image-st

Details Spray gun for a direct-vision image storage tube and an image-st Spray gun for a direct-vision image storage tube and an image-st

1978-03-23

1980-01-22

Segal, Robert

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Plural ray-type tube

313396, 313432, H01J 2950, H01J 3118

Patent

active

041852265

ABSTRACT:
A quadripolar lens incorporated in the spray gun of direct vision image storage tubes enables the density of electrons in the spray beam to be controlled, over a wide range, by acting on the potential of the control grid of the gun, without varying the acceleration potentials.

REFERENCES:
patent: 3278781 (1966-10-01), Burns
patent: 3496406 (1970-02-01), Deschamps
patent: 3772553 (1973-11-01), Balint et al.
patent: 3792303 (1974-02-01), Albertin et al.
patent: 4130775 (1978-12-01), Perkins et al.

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