US 12,242,132 B2
Lens driving apparatus, and camera module and optical device comprising same
Sang Ok Park, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/290,073
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Nov. 12, 2019, PCT No. PCT/KR2019/015316
§ 371(c)(1), (2) Date Apr. 29, 2021,
PCT Pub. No. WO2020/111577, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 10-2018-0147143 (KR), filed on Nov. 26, 2018; and application No. 10-2018-0157899 (KR), filed on Dec. 10, 2018.
Prior Publication US 2021/0396950 A1, Dec. 23, 2021
Int. Cl. G02B 7/09 (2021.01); G02B 7/02 (2021.01); G02B 27/64 (2006.01); G03B 5/06 (2021.01); G03B 13/36 (2021.01); H04N 23/54 (2023.01); H04N 23/68 (2023.01)
CPC G02B 7/09 (2013.01) [G02B 7/023 (2013.01); G02B 27/64 (2013.01); G03B 5/06 (2013.01); G03B 13/36 (2013.01); G03B 2205/0023 (2013.01); H04N 23/54 (2023.01); H04N 23/6812 (2023.01); H04N 23/687 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A lens moving apparatus comprising:
a cover member;
a housing disposed in the cover member and comprising a first side portion, a second side portion disposed opposite to the first side portion, a third side portion disposed between the first and second side portions, and a fourth side portion disposed opposite to the third side portion;
a magnet comprising a plurality of magnet units disposed on the housing;
a bobbin disposed in the housing;
a first coil disposed on the bobbin and comprising a plurality of coil units facing the plurality of magnet units;
a first position sensor disposed in the cover member and configured to detect a displacement of the bobbin in an optical axis direction;
a sensing magnet disposed on the bobbin and facing the first position sensor; and
a balancing member disposed on the bobbin,
wherein the sensing magnet is disposed on a first surface of the bobbin corresponding to the first side portion of the housing, and the balancing member is disposed on a second surface of the bobbin corresponding to the second side portion of the housing,
wherein the bobbin is configured to move in the optical axis direction by an interaction between the magnet and the first coil,
wherein the plurality of coil units does not overlap with an imaginary line when viewed in the optical axis direction, and
wherein the imaginary line is perpendicular to the optical axis, and connects the optical axis, the sensing magnet and the balancing member.