Multistep focusing electron gun for cathode ray tube

Details Multistep focusing electron gun for cathode ray tube Multistep focusing electron gun for cathode ray tube

1989-05-09

1991-05-14

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313447, 313452, H01J 2954, H01J 2956

Patent

active

050159119

ABSTRACT:
A multi-step focusing type electron gun is disclosed which includes a cathode, electrodes G1 and G2, and electrodes G3, G4, G5, G6, G7, and G8 for forming two unipotential auxiliary lenses and a bipotential major lens in the main lens, characterized in that the electrodes G4, G5, G6, G7 are so constituted as to satisfy some specific formulas. The electron gun can reduce the size of the beam spot and the size of the halo formed around the beam spot. Further the electron gun improves the spherical aberration, and provides the flexibility in designing for different purposes, as well as improving the image quality on the screen.

REFERENCES:
patent: 4052643 (1977-10-01), Yamazaki et al.
patent: 4686420 (1987-08-01), Kamohara

Affiliated with

Also associated with

Rating

Multistep focusing electron gun for cathode ray tube does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multistep focusing electron gun for cathode ray tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multistep focusing electron gun for cathode ray tube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1650803