公开(公告)号：US06822241B2

公开(公告)日：2004-11-23

申请号：US10264599

申请日：2002-10-03

申请人： David Schut ,  Alexander Govyadinov ,  Xioofeng Yang

发明人： David Schut ,  Alexander Govyadinov ,  Xioofeng Yang

IPC分类号： H01J306

CPC分类号： H01J3/02 ,  H01J3/022 ,  H01J3/18 ,  H01J29/481 ,  H01J29/62 ,  H01J2237/3175

摘要： An emitter device including a focusing array with plural focusing columns to focus emissions from one or more emitters onto a target medium. Relative movement between the target medium and the focused emissions allows each focusing column to focus emissions over an area of the target medium encompassing the movement range. In a preferred embodiment, separate emitter, focusing array and target medium substrates are used. The focusing array may be moveable, or in a particularly preferred embodiment, is affixed to the emitter substrate, in which case the target medium substrate is movable or the focusing array includes beam direction control.