Colour television display tube with coma correction

H - Electricity – 01 – J

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

313/35.1204

H01J 29/56 (2006.01) H01J 29/70 (2006.01)

Patent

CA 1265838

ABSTRACT: "Colour television display tube with coma correction." Colour television display tube comprising an electron gun system (5) in an evacuated envelope for generating three electron beams whose axes are co-planar and which converge on a display screen (10) provided on a wall of the envelope and are deflected in the opera- tive display tube across said display screen into two orthogonal directions. The electron gun system (5` has correction elements for causing the rasters scanned on the display screen by the electron beams to coincide as much as possible, which correction elements comprise, for example, annular elements (34) of a material having a high magnetic permeability which are positioned around the two outer beams. In addition a further correction element (38, 38", 38",) of a material having a high mag- netic permeability is provided around the central beam in a position located further to the rear in order to correct field coma errors at the ends of the vertical axis and in the corners to an equal extent. The further element is preferably positioned in, or in front of the area of the focusing gap of the electron gun. Fig. 6d.

511096

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Colour television display tube with coma correction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Colour television display tube with coma correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Colour television display tube with coma correction will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1284317

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.