CRT Control grid having orthogonal openings on opposite sides

Details CRT Control grid having orthogonal openings on opposite sides CRT Control grid having orthogonal openings on opposite sides

1978-11-16

1980-12-30

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313448, 313458, H01J 2902, H01J 2956

Patent

active

042426138

ABSTRACT:
The haze around the electron beam spot in the corners and at the edge of the display screen is reduced by using in the electron gun a first grid of a construction such that a multipole lens which is mainly a first quadrupole lens is formed in cooperation with the cathode. The first grid in cooperation with the second grid also forms a multipole lens which is also a mainly second quadrupole lens and which is rotated 90.degree. with respect to the first quadrupole lens. Such a system of lenses in the first grid can be formed, for example, by providing in the first grid an aperture with elongated openings both on the side of the cathode and on the side of the second grid. The longitudinal axis of the elongated opening on the side of the cathode is substantially at right angles to the longitudinal axis of the elongated opening on the side of the second grid.

REFERENCES:
patent: 3852608 (1974-12-01), Johanns et al.
patent: 3866081 (1975-02-01), Hasker et al.
patent: 3919583 (1975-11-01), Hasker et al.
patent: 3978367 (1976-08-01), Jariwala

Affiliated with

Also associated with

Rating

CRT Control grid having orthogonal openings on opposite sides does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CRT Control grid having orthogonal openings on opposite sides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CRT Control grid having orthogonal openings on opposite sides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-9385