US 12,140,817 B2
Lens driving apparatus, and camera module and optical device comprising same
Seung Hak Lee, Seoul (KR); Tae Bong Park, Seoul (KR); Kyung Hwan Kim, Seoul (KR); and Kap Jin Lee, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/287,414
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Oct. 30, 2019, PCT No. PCT/KR2019/014444
§ 371(c)(1), (2) Date Apr. 21, 2021,
PCT Pub. No. WO2020/096260, PCT Pub. Date May 14, 2020.
Claims priority of application No. 10-2018-0135008 (KR), filed on Nov. 6, 2018; application No. 10-2019-0016806 (KR), filed on Feb. 13, 2019; and application No. 10-2019-0031895 (KR), filed on Mar. 20, 2019.
Prior Publication US 2021/0364733 A1, Nov. 25, 2021
Int. Cl. G02B 7/09 (2021.01); G02B 7/02 (2021.01); G03B 5/04 (2021.01); G03B 13/36 (2021.01); G03B 17/12 (2021.01); H02K 41/035 (2006.01); H04N 23/54 (2023.01)
CPC G02B 7/09 (2013.01) [G02B 7/025 (2013.01); G03B 5/04 (2013.01); G03B 13/36 (2013.01); G03B 17/12 (2013.01); H02K 41/0356 (2013.01); H04N 23/54 (2023.01); G03B 2205/0007 (2013.01); G03B 2205/0069 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lens moving apparatus comprising:
a housing comprising a first corner portion, a second corner portion facing the first corner portion, a third corner portion, and a fourth corner portion facing the third corner portion;
a bobbin disposed in the housing;
a magnet comprising a first magnet disposed on the first corner portion of the housing and a second magnet disposed on the second corner portion of the housing;
a coil disposed on the bobbin so as to face the magnet;
a circuit board disposed on one surface of the housing;
a position sensor disposed on the circuit board and electrically connected to the circuit board; and
a sensing magnet disposed on the bobbin so as to face the position sensor,
wherein the bobbin comprises:
a projection formed at one surface of the bobbin facing the one surface of the housing and projecting toward the one surface of the housing; and
a seating groove depressed from an upper surface of the projection of the bobbin,
wherein at least a portion of the sensing magnet is disposed in the seating groove of the projection of the bobbin,
wherein the sensing magnet comprises:
a projecting portion positioned outside a reference line that coincides with the one surface of the bobbin; and
a non-projecting portion positioned inside of the reference line, and
wherein a length of the projecting portion of the sensing magnet is greater than a length of the non-projecting portion of the sensing magnet.