Patent ID: 11933640
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A magnetic linear position detector comprising:
a stator; and
a mover adapted to be movable along a first direction with respect to the stator, wherein
one of the stator and the mover includes a magnetic detector,
the other of the stator and the mover includes a magnet,
the magnet has a first face facing the magnetic detector, the first face being provided alternately with N poles and S poles along the first direction,
the magnet includes:
a first region; and
second regions provided on each side of the first region along the first direction, and each of the second regions extends from the first region to a corresponding end of the magnet,
in the first region, a length of the magnet along a second direction perpendicular to the first face is constant,
each of the second regions includes a plurality of magnetic poles, and
in each of the second regions, the length along the first direction of each pole in the plurality of magnetic poles included in the second region is reduced as the distance from the first region in the first direction increases, and
in each of the second regions, the length along the second direction of each pole in the plurality of magnetic poles included in the second region is longer than that in the first region.