Cathode ray tube

Details Cathode ray tube Cathode ray tube

H - Electricity

01

J

313/35.31

H01J 29/46 (2006.01) H01J 29/62 (2006.01) H01J 29/74 (2006.01) H01J 31/38 (2006.01)

Patent

CA 1219305

ABSTRACT A cathode ray tube comprises an envelope, an electron gun having a beam limiting aperture, a first electrode, a second electrode, a third electrode and a mesh electrode, the first, second and third electrodes constituting electrostatic lens system to focus the electron beam, the second electrode being a deflection electrode of arrow or zig-zag patterns to deflect the electron beam, wherein if distance between the beam limiting aperture and the mesh electrode is ?, length of the second electrode is made (1/3?- 1/10?) to (1/3?+ 1/10?), and distance between the beam limiting aperture and the center of the second electrode is made (1/2?- 1/3?) to 1/2?.

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