公开(公告)号：EP1512037A1

公开(公告)日：2005-03-09

申请号：EP02737706.8

申请日：2002-06-12

申请人： Microcut AG

发明人： HUG, Kurt ,  JONES, Peter ,  MAAG, Urs

IPC分类号： G02B6/35 ,  H01F7/16

CPC分类号： G02B6/3572 ,  G02B6/3514 ,  G02B6/3546 ,  H01F7/123 ,  H01F7/124 ,  H01F7/1646

摘要： An electromagnetic micro positioner, e.g. for use in fibre optics, is operated by a ceramic piston (8) mounted within a ceramic cylinder (5). The piston (8) is moved by a permanent magnet (9) and an electromagnetic circuit (1/2). By changing the coil (2) polarity the piston (8) will either be attracted or repelled to its top or bottom position. In particular the core (1), capable of polarity reversal, has a magnetic remanence by means of which the movable piston (8) is fixable in one of the two predefined positions when the coil (2) is not energized.