CATHODE-RAY TUBE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a cathode-ray tube device effectively enhancing sensitivity of velocity modulation in simple constitution. SOLUTION: A magnetic material ring 50 enveloping the outer circumference of a color cathode-ray tube corresponding to a gap between a G5B electrode and a G6 electrode forming a main lens in an electron gun 24 from the outside of the velocity modulation coils 18A, 18B is installed. COPYRIGHT: (C)2005,JPO&NCIPI