US 11,906,810 B2
Optical element driving mechanism
Ying-Jen Wang, Taoyuan (TW); Ya-Hsiu Wu, Taoyuan (TW); Chen-Chi Kuo, Taoyuan (TW); Chao-Chang Hu, Taoyuan (TW); Yi-Ho Chen, Taoyuan (TW); Che-Wei Chang, Taoyuan (TW); Ko-Lun Chao, Taoyuan (TW); and Sin-Jhong Song, Taoyuan (TW)
Assigned to TDK TAIWAN CORP., Taoyuan (TW)
Filed by TDK TAIWAN CORP., Taoyuan (TW)
Filed on Mar. 5, 2021, as Appl. No. 17/193,505.
Claims priority of provisional application 63/056,183, filed on Jul. 24, 2020.
Claims priority of provisional application 63/050,503, filed on Jul. 10, 2020.
Claims priority of provisional application 63/041,459, filed on Jun. 19, 2020.
Claims priority of provisional application 63/017,313, filed on Apr. 29, 2020.
Claims priority of provisional application 63/000,604, filed on Mar. 27, 2020.
Claims priority of provisional application 62/986,039, filed on Mar. 6, 2020.
Prior Publication US 2021/0278624 A1, Sep. 9, 2021
Int. Cl. G02B 7/09 (2021.01); G01B 7/00 (2006.01); G02B 27/64 (2006.01)
CPC G02B 7/09 (2013.01) [G01B 7/003 (2013.01); G02B 27/646 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical element driving mechanism used for disposing on an electronic apparatus, comprising:
a first movable portion used for connecting to a first optical element, wherein the first optical element is used for corresponding to a light;
a fixed portion, wherein the first movable portion is movable relative to the fixed portion;
a first driving assembly used for driving the first movable portion to move relative to the fixed portion; and
a circuit assembly used for electrically connecting to the electronic apparatus; and
a first position sensing assembly used for detecting the movement of the first movable portion relative to the fixed portion, comprising:
a first sensing element, comprising a first reference magnetic unit and a first magnetic sensing unit;
a second sensing element, comprising a second reference magnetic unit and a second magnetic sensing unit; and
a third sensing element, comprising a third reference magnetic unit and a third magnetic sensing unit;
wherein:
the fixed portion comprises a main axis passing through a reference point of the movable portion;
the first reference magnetic unit comprises a first north pole and a first south pole, the first north pole and the first south pole are arranged in a first direction when viewed along the main axis;
the second reference magnetic unit comprises a second north pole and a second south pole, the second north pole and the second south pole are arranged in a second direction when viewed along the main axis;
the third reference magnetic unit comprises a third north pole and a third south pole, the third north pole and the third south pole are arranged in a third direction when viewed along the main axis;
at least one of the first direction, the second direction, and the third direction is different from other two of the first direction, the second direction, and the third direction.