US 11,681,116 B2
Lens driving unit, camera module and optical apparatus having a magnet for sensing a position of a bobbin
Jun Taek Lee, Seoul (KR); Sang Ok Park, Seoul (KR); Byung Wook Son, Seoul (KR); and Seong Min Lee, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Filed by LG INNOTEK CO., LTD., Seoul (KR)
Filed on Nov. 21, 2019, as Appl. No. 16/690,386.
Application 16/690,386 is a continuation of application No. 15/142,610, filed on Apr. 29, 2016, granted, now 10,520,700.
Claims priority of application No. 10-2015-0060353 (KR), filed on Apr. 29, 2015; application No. 10-2015-0092589 (KR), filed on Jun. 30, 2015; and application No. 10-2015-0092590 (KR), filed on Jun. 30, 2015.
Prior Publication US 2020/0088971 A1, Mar. 19, 2020
Int. Cl. G02B 7/08 (2021.01); G01D 5/14 (2006.01); G02B 27/64 (2006.01); H04N 23/55 (2023.01); H04N 23/57 (2023.01)
CPC G02B 7/08 (2013.01) [G01D 5/145 (2013.01); G02B 27/646 (2013.01); H04N 23/55 (2023.01); H04N 23/57 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A lens driving device, comprising:
a base;
a housing disposed on the base;
a bobbin disposed in the housing;
a first coil disposed on the bobbin;
a first magnet disposed on the housing;
a first circuit board disposed on the base and comprising a second coil facing the first magnet;
a second magnet disposed at a corner of the bobbin;
a second circuit board disposed on the housing;
a sensor coupled to the second circuit board and configured to sense the second magnet;
an upper elastic member connecting the bobbin and the housing; and
a wire disposed between the first circuit board and the upper elastic member,
wherein the housing comprises first and second corners opposite to each other, and third and fourth corners opposite to each other,
wherein the second circuit board and the sensor are disposed at a position corresponding to the first corner of the housing,
wherein the first magnet comprises a first driving magnet disposed between the first corner of the housing and the third corner of the housing, a second driving magnet disposed between the third corner of the housing and the second corner of the housing, a third driving magnet disposed between the second corner of the housing and the fourth corner of the housing, and a fourth driving magnet disposed between the first corner of the housing and the fourth corner of the housing,
wherein a distance between the first driving magnet and the fourth driving magnet is greater than a distance between the first driving magnet and the second driving magnet,
wherein the upper elastic member comprises four elastic units electrically connected with the sensor, and
wherein the wire comprises two wires disposed at a first corner of the housing and spaced apart from each other.