基本信息:
- 专利标题： ELECTRONIC APPARATUS
- 专利标题（中）：电子设备
- 申请号：EP05762156.7 申请日：2005-07-22
- 公开(公告)号：EP1820257A2 公开(公告)日：2007-08-22
- 发明人： MILLER, Rodney
- 申请人： Stenzel Security Limited
- 申请人地址： 18 Bedford Row London WC1R 4EQ GB
- 专利权人： Stenzel Security Limited
- 当前专利权人： Stenzel Security Limited
- 当前专利权人地址： 18 Bedford Row London WC1R 4EQ GB
- 代理机构： Hutchins, Michael Richard
- 优先权： GB0416519 20040723
- 国际公布： WO2006008541 20050722
- 主分类号： H02N11/00
- IPC分类号： H02N11/00
摘要：
The invention provides a device for producing and focussing an electron beam; the device comprising an evacuated chamber (4), a source of electrons (2), a target (6), means for creating an electric field to accelerate a stream of the electrons constituting the electron beam through the chamber towards the target, and means (12) for providing a magnetic field crossing the electron beam; characterised in that the magnetic flux of the magnetic field progressively reduces in the direction of the target.