Linear motor, moving stage system, exposure apparatus, and...

Details Linear motor, moving stage system, exposure apparatus, and... Linear motor, moving stage system, exposure apparatus, and...

2006-06-27

2006-06-27

Tamai, Karl (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

Reexamination Certificate

active

07067942

ABSTRACT:
A linear motor including a coil, a plurality of first magnet groups having polar directions disposed in periodically different directions, and a plurality of second magnet groups having polar directions disposed in periodically different directions. In a set including a predetermined magnet of the first magnet groups and a magnet of the second magnet groups, corresponding to the predetermined magnet, magnetization directions of the set of magnets have mutually different tilts with respect to the central axis of the coil. The coil includes a first coil effective to produce a Lorentz's force between the first coil and the first magnet groups, and a second coil effective to produce a Lorentz's force between the second coil and the second magnet groups.

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