US 11,902,643 B2
Camera module and camera device comprising same
Young Bae Jang, Seoul (KR); Dae Sik Jang, Seoul (KR); Chul Kim, Seoul (KR); and Hyun Gyu Roh, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/616,444
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Jun. 4, 2020, PCT No. PCT/KR2020/007265
§ 371(c)(1), (2) Date Dec. 3, 2021,
PCT Pub. No. WO2020/246820, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 10-2019-0066250 (KR), filed on Jun. 4, 2019; application No. 10-2019-0069303 (KR), filed on Jun. 12, 2019; and application No. 10-2019-0078576 (KR), filed on Jul. 1, 2019.
Prior Publication US 2022/0239808 A1, Jul. 28, 2022
Int. Cl. H04N 23/54 (2023.01); G03B 13/36 (2021.01); H04N 23/55 (2023.01)
CPC H04N 23/54 (2023.01) [G03B 13/36 (2013.01); H04N 23/55 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A camera module comprising:
base;
a guide portion disposed on an inner side of the base;
a lens assembly moving along the guide portion; and
a substrate disposed on an outer side of the base,
wherein the lens assembly includes a conductor disposed under a lower surface thereof,
wherein the substrate includes a resonance coil disposed in a region facing the lower surface of the lens assembly and overlapping at least a part of the conductor in a direction perpendicular to an optical axis direction in response to movement of the lens assembly, and
wherein the resonant coil generates a magnetic field by resonating with a resonance frequency, and sensing a position of the lens assembly based on an inductance value that changes according to a change in a strength of the generated magnetic field.