| 摘要 |
Color television tube provided with a perforated mask and three aligned electron guns, the openings of the mask far from the center of the mask having a major axis inclined with respect to the vertical, the inclination alpha increasing with the distance from the center and this inclination being in the direction opposite to that of the image of a non-inclined slot of the mask that would be produced on the screen, by an optical projection system simulating the tube deflector.
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