Patent ID: 11899355
Assignee: NIDEC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. An optical unit, comprising:
an optical element that changes a traveling direction of light;
a holder that holds the optical element;
a first support portion that supports the holder so as to be swingable about a first swing axis;
a second support portion that supports the first support portion so as to be swingable about a second swing axis intersecting the first swing axis;
a first swing mechanism that swings the holder about the first swing axis with respect to the first support portion; and
a second swing mechanism that swings the first support portion about the second swing axis with respect to the second support portion, wherein
the first swing mechanism includes
a first magnet arranged on the holder, and
a first coil arranged on the second support portion, the second swing mechanism includes
a second magnet arranged on the first support portion, and
a second coil arranged on the second support portion,

one of the first support portion and the second support portion has at least three axial center protrusions protruding toward a remaining one of the first support portion and the second support portion,
the at least three axial center protrusions are arranged on an identical circumference centered on the second swing axis,
the remaining one of the first support portion and the second support portion has an axial center recess that is recessed in a direction opposite to an axial center protrusion of the at least three axial center protrusions and forms a part of a circle centered on the second swing axis, and
the axial center recess is in contact with the axial center protrusion.