US 12,007,622 B2
Optical unit
Tsutomu Arai, Nagano (JP); 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 Sep. 28, 2021, as Appl. No. 17/486,933.
Claims priority of application No. 2020-163466 (JP), filed on Sep. 29, 2020.
Prior Publication US 2022/0099922 A1, Mar. 31, 2022
Int. Cl. G02B 7/18 (2021.01); G02B 7/00 (2021.01); G02B 7/02 (2021.01); G03B 17/12 (2021.01); H04N 23/51 (2023.01); H04N 23/55 (2023.01)
CPC G02B 7/1805 (2013.01) [G02B 7/003 (2013.01); G02B 7/026 (2013.01); G03B 17/12 (2013.01); H04N 23/51 (2023.01); H04N 23/55 (2023.01)] 8 Claims
OG exemplary drawing
 
1. An optical unit comprising:
a reflection portion, configured to reflect an incident light flux incident from outside in a reflection direction from an incident direction to an imaging element on a reflection surface;
a movable body, configured to support the reflection portion;
a fixed body; and
a rotation support mechanism, configured to rotate the movable body with respect to the fixed body with an axial direction crossing the incident direction and the reflection direction as a rotation axis, wherein
the rotation support mechanism has: a spring member in a U-shape that is disposed between the fixed body and the movable body in the axial direction and applies a force in a widening direction to widen a space between the fixed body and the movable body in the axial direction;
the spring member has a rotation-axis first forming member that constitutes the rotation axis;
the movable body has a rotation-axis second forming member that constitutes the rotation axis together with the rotation-axis first forming member; and
the rotation-axis first forming member and the rotation-axis second forming member are disposed at positions where the rotation axis passes through a center of gravity position of the movable body.