发明名称 PLANAR PULSE MOTOR, EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD
摘要 A planar pulse motor includes a stator and a mover which is arranged opposite to the stator and which has a plurality of coils. The planar pulse motor can drive the mover in a first direction on a horizontal plane and in a second direction orthogonal to the first direction by controlling current flowing in the plurality of coils. The stator has a plurality of raised portions, including a plurality of first raised portions composed by laminating a plurality of layers of members including magnetic materials through which magnetic flux can pass only in the first direction and a plurality of second raised portions composed by laminating a plurality of layers of members including magnetic materials through which magnetic flux can pass only in the second direction, and a plurality of recessed portions through which magnetic flux does not pass in either the first or the second direction. The plurality of raised portions are regularly arranged in a vicinity of each of recessed portions in the first and second directions.
申请公布号 US2009033158(A1) 申请公布日期 2009.02.05
申请号 US20080182973 申请日期 2008.07.30
申请人 CANON KABUSHIKI KAISHA 发明人 SATO MITSUYA
分类号 H02K33/16 主分类号 H02K33/16
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