| 摘要 |
<p>An electron gun for a colour cathode ray tube, arranged, when electron beams are deflected in a convergence free deflecting magnetic field, to achieve optimal focused conditions for both the electron beam landing at the centre and that landing at the corners of a screen (3) by making, within a principal converging region for converging the electron beams, the converging angle (θV) in the vertical direction smaller than that (8H) in the horizontal direction, and by forming, within an object point forming region, the object point in the vertical direction further from the principal converging region than the object point in the horizontal direction.</p> |
