发明名称 |
ELECTRON-OPTICAL DEVICE HAVING TWO ELONGATE EMITTING REGIONS |
摘要 |
Electron-optical device having two elongate emitting regions arranged symmetrically with respect to a longitudinal axis for producing two electron beams having an elongate cross section. By means of electron grids, the two beams are focused at the same point of an electron target arranged transversely to the longitudinal axis and having a short central axis and a long central axis. The elongate emitting regions have their smallest cross section parallel to the scanning direction of a device, cooperating with the electron-optical device, for scanning a target arranged transversely to the longitudinal axis.
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申请公布号 |
WO9709734(A1) |
申请公布日期 |
1997.03.13 |
申请号 |
WO1996IB00871 |
申请日期 |
1996.08.29 |
申请人 |
PHILIPS ELECTRONICS N.V.;PHILIPS NORDEN AB |
发明人 |
GEHRING, FREDERIK, CHRISTIAAN;VAN ZUTPHEN, TOM;MANENSCHIJN, ALBERT |
分类号 |
H01J29/04;H01J3/02;H01J29/46;H01J29/48;(IPC1-7):H01J29/46 |
主分类号 |
H01J29/04 |
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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