| 发明名称 |
MAGNETIC LENSES IN SHADOW MASK OF POST DEFLECTION CATHODE TUBE |
| 摘要 |
<p>A cathode ray tube for displaying coloured pictures of the post focusing type. A magnetic quadrupole lens is formed in each aperture of the colour selection means. The defocusing direction of quadrupole lenses is parallel to the phosphor strips of the display screen.</p> |
| 申请公布号 |
CA1067559(A) |
申请公布日期 |
1979.12.04 |
| 申请号 |
CA19760268312 |
申请日期 |
1976.12.20 |
| 申请人 |
N.V. PHILIPS'GLOEILAMPENFABRIEKEN |
发明人 |
VERWEEL, JAN |
| 分类号 |
H01J31/20;H01J29/07;H01J29/68;H01J29/81;(IPC1-7):01J29/64 |
主分类号 |
H01J31/20 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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