| 摘要 |
In a CRT-based projection display apparatus that displays on a screen video images displayed on three CRTs for red, green, and blue respectively, by projecting the video images against a screen so that the video images are enlarged and synthesized, a deflecting yoke and a velocity modulating coil are attached to a neck portion of each CRT. Furthermore, a cylindrical magnetic shield is arranged so as to cover a coil portion of the velocity modulating coil and a cathode of the CRT.
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