一种新型偏转线圈的大偏转角技术

Large-Angle Deflection Technology of a New Deflection Coil

为了利用现有 CRT颜色逼真、分辨率高、技术成熟等优点 ,克服其体积大、笨重的不足 ,提出将两组平面主线圈和两组圆柱形辅助线圈组成一个全新的偏转线圈 ,利用这种新型偏转线圈制作成的 CRT能较大幅度减薄显像管的厚度 ,并在保证图像质量前提下实现电子束的大角度偏转 .实验结果表明 ,电子束最大偏转角可达 1 2 6°以上 ,光点测试结果良好 。

In order to utilize the merits of true color, high resolution, mature technologies of CRT and overcome its big bulk and heavy body, a novel deflection yoke, which is composed of two main and two assistant cylindrical yokes, was proposed. The thickness of the CRT made of this novel deflection yoke can be decreased quite a bit. This CRT achieves large deflection angle while keeping the fine image quality. The experimental results show that the largest deflection angle of the electron beams may exceed 126°, and that this CRT has a fine light spot test result. The focusing characteristics of the electron beams are also improved.