MAGNETIC FIELD SHIELDING MECHANISM AND ACTUATOR

摘要

A magnetic field shielding mechanism (50) comprises a first magnet (3a) which is magnetized in a first direction and a second ring-shaped magnet (52) which is arranged on the side of the magnetic pole of the first magnet (3a) and is magnetized in a direction that intersects the first direction, wherein a magnetic field from the first magnet (3a) toward the second magnet (52) is shielded or reduced.