| 主权项 |
1. A lens holding device comprising:
a base part, and a lens holding unit held so as to move relatively with respect to the base part in a vertical direction parallel to an optical axis direction, wherein: the lens holding unit comprises a lens holder, a magnet part consisting solely of plastic magnet, and a spring, the lens holder is connected with the magnet part by the spring so as to move relative to the optical axis direction, the lens holder comprises a first coil arranged around an outer circumference of a lens and having an axis corresponding with the optical axis direction, the magnet part includes: a first magnet part including a first face facing the first coil and constituting a first magnetic domain, and a second magnet part including a second face being vertically disposed relative to the first face and constituting a second magnetic domain different from the first magnetic domain of the first magnet part, the first magnet part and the second magnet part are integrated, the second magnet part being a continuous ring in a circumferential direction of the lens, the base part of the lens holding device comprises a second coil facing the second face, the spring of the lens holding unit comprises an incident side spring which is arranged at an incident side of the lens with respect to the first coil and an outgoing side spring which is arranged at an outgoing side of the lens with respect to the first coil, the lens holding unit further comprises a plurality of alignment parts including an incident side alignment part which is arranged at the first magnet part and positions the incident side spring, and an outgoing side alignment part which is arranged at the second magnet part and positions the outgoing side spring, and the second magnet part further comprises a second intermediate part having a third magnetic domain. |
