US 11,867,969 B2
Optical element driving mechanism
Jungsuck Ryoo, Taoyuan (TW); Chieh-An Chang, Taoyuan (TW); Min-Hsiu Tsai, Taoyuan (TW); Chao-Chang Hu, Taoyuan (TW); Shu-Shan Chen, Taoyuan (TW); Pai-Jui Cheng, Taoyuan (TW); and Chao-Hsi Wang, Taoyuan (TW)
Assigned to TDK TAIWAN CORP., Taoyuan (TW)
Filed by TDK TAIWAN CORP., Taoyuan (TW)
Filed on Dec. 4, 2020, as Appl. No. 17/112,184.
Claims priority of provisional application 62/944,496, filed on Dec. 6, 2019.
Prior Publication US 2021/0173171 A1, Jun. 10, 2021
Int. Cl. G02B 7/02 (2021.01); H02N 2/00 (2006.01); G03B 5/02 (2021.01)
CPC G02B 7/026 (2013.01) [G03B 5/02 (2013.01); H02N 2/0095 (2013.01); G03B 2205/0061 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical element driving mechanism having an optical axis, comprising;
a fixed portion;
a movable portion, moving relative to the fixed portion; and
a driving assembly, driving the movable portion to move relative to the fixed portion comprising:
a piezoelectric element, having a circular plate shape extending in a second direction and a third direction;
a transmission element, connected to the piezoelectric element;
a clamping element, clamped to the transmission element, and movable relative to the transmission element;
a conversion element, connected to the clamping element two first magnetic elements, disposed on the conversion element and
a second magnetic element, disposed on the movable portion;
wherein the driving assembly moves in a first direction to move the movable portion in the second direction, and the first direction is different from the second direction,
wherein each of the first magnetic elements has a first magnetic pole direction, and the first magnetic pole direction is neither parallel nor perpendicular to the first direction, the second direction, or the third direction.