US 12,474,539 B2
Optical unit
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 Jan. 23, 2022, as Appl. No. 17/581,960.
Claims priority of application No. 2021-018842 (JP), filed on Feb. 9, 2021; and application No. 2021-067130 (JP), filed on Apr. 12, 2021.
Prior Publication US 2022/0252822 A1, Aug. 11, 2022
Int. Cl. G02B 7/02 (2021.01)
CPC G02B 7/02 (2013.01) 15 Claims
OG exemplary drawing
 
1. An optical unit comprising:
a movable body which comprises an optical module and to which a flexible printed circuit board is connected;
a fixed body;
a rotation support mechanism to support the movable body rotatably with respect to the fixed body using an optical axis direction of the optical module as a rotation axis;
a gimbal mechanism to support the movable body rotatably with respect to the fixed body using at least two directions intersecting the optical axis direction as rotation axes, wherein
the movable body has a first side surface, a second side surface, a third side surface, and a fourth side surface as movable-body side surfaces each of which faces the direction intersecting the optical axis direction,
the first side surface positioning on an opposite side to the third side surface, and the second side surface positioning on an opposite side to the fourth side surface,
the flexible printed circuit board is connected to the movable body on the first side surface side, has a clearance provided with respect to the movable-body side surface, and has a side-surface facing region facing the movable-body side surface, the side-surface facing region is arranged to face the first side surface and the second side surface but not to face the third side surface or the fourth side surface, and
in the flexible printed circuit board, as the side-surface facing region facing the first side surface, an opposing surface opposing the first side surface is provided from a connection portion in connection with the movable body via an intersecting surface intersecting the first side surface toward the second side surface side along the first side surface, wherein a planar portion of the opposing surface and a planar portion of the intersecting surface are orthogonal to each other, and the planar portion of the intersecting surface extends from the connection portion in a direction orthogonal to the first side surface; and
a first bending holding portion which is a sheet metal attached to a bent portion formed between the opposing surface and the intersecting surface of the flexible printed circuit board.