发明名称 |
CATHODE RAY TUBE |
摘要 |
<p>14 In order to reduce contrast degradation in an electrostatically scanned flat cathode ray tube (10) having a channel plate electron multiplier (44), due to backscattered electrons (46) entering channels remote from their origin, a coating (50) of a material having a low back-scatter coefficient is applied over the input of the electron multiplier (44), between the apertures therein. The surface texture of the material should be microscopically rough. The material can be applied to the first dynode (D1) or to an electrode electrically and physically connected to the first dynode. Optionally the acceptance angle of the channel plate electron multiplier may be restricted.</p> |
申请公布号 |
CA1221133(A) |
申请公布日期 |
1987.04.28 |
申请号 |
CA19840458191 |
申请日期 |
1984.07.05 |
申请人 |
N.V.PHILIPS'GLOEILAMPENFABRIEKEN |
发明人 |
WOODHEAD, ALFRED W.;GILL, RONALD W.A.;KNAPP, ALAN G.;LAMPORT, DAPHNE L.;WASHINGTON, DEREK |
分类号 |
H01J31/12;H01J43/22;(IPC1-7):H01J43/24 |
主分类号 |
H01J31/12 |
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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