Device for displaying pictures by means of a cathode-ray tube

Details Device for displaying pictures by means of a cathode-ray tube Device for displaying pictures by means of a cathode-ray tube

1981-12-14

1984-04-17

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313440, H01J 2976

Patent

active

044437374

ABSTRACT:
By causing the deflection of an electron beam (13) in a cathode-ray tube having a main system of deflection coils (4) and a system of post-deflection coils (5) to take place on the side of the display screen of the main system of deflection coils, which system of post-deflection coils causes a post-deflection of the electron beam opposite to the deflection by the main system of deflection coils which after deflection is synchronous with and weaker than the deflection by the main system of deflection coils, it is possible to choose the place of the (virtual) deflection point of the combination of main and post-deflection coil system more or less at will. By choosing L, the distance from said virtual deflection point to the display screen, to be substantially equal to 21, where l is the effective length of the overall magnetic deflection field, a substantially anastigmatic deflection sytstem is obtained.

REFERENCES:
patent: 3424942 (1969-01-01), Barbin

Affiliated with

Also associated with

Rating

Device for displaying pictures by means of a 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 Device for displaying pictures by means of a cathode-ray tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for displaying pictures by means of a cathode-ray tube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-97362