| 摘要 |
A monotube CRT includes an envelope which comprises a first section that houses the electron gun and a second section that houses a fiber optics faceplate along a sidewall. An array of electromagnets is disposed along the second section for deflecting the electron beam from its longitudinal path through the envelope transversely to trace a linear scan on the faceplate. The first section of the envelope is a circular cylinder whose axis is coaxial with the longitudinal path of the electron flow. The second section of the envelope is essentially rectangular or elliptical in cross section and the undeflected beam flows adjacent one narrow sidewall opposite the sidewall housing the faceplate. Each electromagnet of the array includes a core portion adjacent said one narrow sidewall and pole pieces that flank the wide sidewalls of the section.
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