| 摘要 |
An electron gun for a cathode ray tube includes a cathode for radiating thermal electrons, control and screen electrodes disposed away from the cathode at a predetermined distance in respective order, a focus electrode disposed away from the screen electrode, the focus electrode having upper and lower cylinders and an inclined portion disposed between the upper and lower cylinders, and an anode electrode formed in a cylindrical shape, the upper cylinder, the inclined portion, and a part of the lower cylinder are disposed in the anode electrode. A length S1 of the upper cylinder in a direction of a tube axis is less than a length T1 of the inclined portion.
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