Cathode-ray tube with electrostatic deflection

Details Cathode-ray tube with electrostatic deflection Cathode-ray tube with electrostatic deflection

1987-04-17

1988-12-20

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313439, 313450, 315 17, H01J 2962, H01J 2970

Patent

active

047927216

ABSTRACT:
A cathode-ray tube comprises an electron beam generating section provided at one end of the tube, a target provided at the other end of the tube, and a group of electrodes provided on an inner wall of the tube for focusing and deflecting an electron beam. The electrode group includes first and second electrodes between the one and other ends of the tube in the mentioned order. The first electrode has a lead electrode portion for supplying an electric potential to the second electrode. The lead electrode portion extends along the tube axis with a zigzag form in which an angle .angle.MZN of a convave apex M and a convex apex N adjacent thereto spanning in a circumferential direction centering the tube axis Z is not smaller than 115.degree. or a spiral form which rotates centering the tube axis at a rotation angle not smaller than 420.degree..

REFERENCES:
patent: 4701668 (1987-10-01), Oku et al.

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