US 12,292,618 B2
Camera actuator and camera module comprising same
Jun Seok Oh, Seoul (KR); Min Ji Kim, Seoul (KR); and Jae Gwang Lee, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/767,235
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Oct. 8, 2020, PCT No. PCT/KR2020/013736
§ 371(c)(1), (2) Date Apr. 7, 2022,
PCT Pub. No. WO2021/071284, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 10-2019-0125393 (KR), filed on Oct. 10, 2019; and application No. 10-2019-0127907 (KR), filed on Oct. 15, 2019.
Prior Publication US 2022/0382013 A1, Dec. 1, 2022
Int. Cl. G02B 7/10 (2021.01); G03B 13/36 (2021.01); G03B 17/12 (2021.01)
CPC G02B 7/10 (2013.01) [G03B 13/36 (2013.01); G03B 17/12 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A camera module comprising:
a lens group;
a lens support unit configured to accommodate the lens group;
a magnet disposed on an outer surface of the lens support unit;
a yoke part that is disposed apart from and faces the magnet; and
a coil disposed on the yoke part to face and be spaced apart from the magnet between the magnet and the yoke part,
wherein:
all the lens group, the lens support unit, and the magnet move along an optical axis according to a current applied to the coil;
the yoke part includes a first yoke and a second yoke disposed on the first yoke;
the second yoke is disposed between the first yoke and the coil; and
a permeability of the first yoke is 1,000 times or more that a permeability of the second yoke.