US 11,985,402 B2
Optical unit with shake correction function
Shinji Minamisawa, Nagano (JP); and Takeshi Sue, Nagano (JP)
Assigned to NIDEC SANKYO CORPORATION, Nagano (JP)
Filed by NIDEC SANKYO CORPORATION, Nagano (JP)
Filed on Dec. 19, 2022, as Appl. No. 18/083,577.
Claims priority of application No. 2021-213627 (JP), filed on Dec. 28, 2021.
Prior Publication US 2023/0209158 A1, Jun. 29, 2023
Int. Cl. H04N 23/51 (2023.01); H04N 23/52 (2023.01); H04N 23/68 (2023.01)
CPC H04N 23/51 (2023.01) [H04N 23/52 (2023.01); H04N 23/682 (2023.01)] 5 Claims
OG exemplary drawing
 
1. An optical unit with a shake correction function, comprising:
a movable body having a camera module; an intermediate member rotatably holding the movable body; a fixed body rotatably holding the intermediate member; a magnetic drive mechanism to rotate the movable body with respect to the fixed body so that an optical axis of the camera module is inclined in an arbitrary direction; and a circuit board pulled out from the camera module, wherein
supposing that a direction orthogonal to the optical axis of the camera module disposed at a predetermined reference position is a first direction, a direction orthogonal to the optical axis of the camera module disposed at the reference position and the first direction is a second direction, one side in an optical axis direction being a direction of the optical axis of the camera module is a subject side, and a side opposite to the subject side is a counter-subject side;
the fixed body comprises an intermediate-member holder rotatably holding the intermediate member and an outer-peripheral side covering portion covering an outer peripheral side of the intermediate-member holder;
the circuit board comprises a module mounting portion mounted on an end surface on the counter-subject side of the camera module, a drawer portion pulled out from the module mounting portion to the outer peripheral side of the camera module, a band-shaped portion having an elongated band shape that is connected on one end part to the drawer portion and is pulled around on an outer peripheral side of the intermediate-member holder and an inner peripheral side of the outer-peripheral side covering portion, and a fixed portion connected to the other end part of the band-shaped portion and fixed to an outer peripheral surface of the intermediate-member holder;
when viewed from the optical axis direction of the camera module, when the optical axis of the camera module is at the reference position, an outer shape of the intermediate-member holder is a regular square or a rectangle, and four sides constituting the outer peripheral surface of the intermediate-member holder are parallel to the first direction or the second direction;
supposing that one side in the two sides of the intermediate-member holder parallel to the first direction is a first side, and one side in the two sides of the intermediate-member holder parallel to the second direction is a second side;
a width direction of the band-shaped portion is parallel to the optical axis direction when the optical axis of the camera module is at the reference position;
the drawer portion is pulled out from the module mounting portion toward the one side in the first direction on the second side;
the band-shaped portion is pulled around along the first side and the second side;
the fixed portion is fixed to the outer peripheral surface of the intermediate-member holder on the first side;
supposing that a part of the band-shaped portion disposed along the first side is a first band-shaped portion, and a part of the band-shaped portion disposed along the second side is a second band-shaped portion;
in the intermediate-member holder, a planar-shaped first inner-side wall surface disposed on an inner side of the first band-shaped portion in the second direction and orthogonal to the second direction and a planar-shaped second inner-side wall surface disposed on an inner side of the second band-shaped portion in the first direction and orthogonal to the first direction are defined;
on the outer-peripheral side covering portion, a planar-shaped first outer-side wall surface disposed on an outer side of the first band-shaped portion in the second direction and parallel to the first inner-side wall surface and a planar-shaped second outer-side wall surface disposed on an outer side of the second band-shaped portion in the first direction and parallel to the second inner-side wall surface are defined; and
an interval between the first inner-side wall surface and the first outer-side wall surface in the second direction is smaller than an interval between the second inner-side wall surface and the second outer-side wall surface in the first direction.