US 11,681,118 B2
Optical element driving mechanism
Wei-Jhe Shen, Taoyuan (TW); Kun-Shih Lin, Taoyuan (TW); Yung-Ping Yang, Taoyuan (TW); Chun-Chieh Chang, Taoyuan (TW); Sheng-Chang Lin, Taoyuan (TW); and Che-Hsiang Chiu, Taoyuan (TW)
Assigned to TDK TAIWAN CORP., Taoyuan (TW)
Filed by TDK TAIWAN CORP., Taoyuan (TW)
Filed on Dec. 4, 2020, as Appl. No. 17/112,207.
Claims priority of provisional application 62/986,039, filed on Mar. 6, 2020.
Claims priority of provisional application 62/944,496, filed on Dec. 6, 2019.
Prior Publication US 2021/0173172 A1, Jun. 10, 2021
Int. Cl. G02B 7/09 (2021.01); G02B 27/64 (2006.01)
CPC G02B 7/09 (2013.01) [G02B 27/646 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical element driving mechanism with an optical axis, comprising:
a fixed portion;
a movable portion, connected to the fixed portion, comprising:
a through hole, wherein the through hole has a center, and the optical axis passes through the center of the through hole;
a receiving groove, disposed on the first side and the second side;
a counterweight element, disposed on the receiving groove;
a first groove, disposed on the first side; and
a second groove, disposed on the second side; and
a driving assembly, driving the movable portion to move in a direction that is parallel to the optical axis relative to the fixed portion;
wherein when viewed in the direction that is parallel to the optical axis, the optical element driving mechanism has a rectangular structure with a first side, a second side, a third side, and a fourth side, and the first side is opposite the third side, and the first side is adjacent to the second side and the fourth side;
wherein a shortest distance from the center of the through hole to the first side is greater than a shortest distance from the center of the through hole to the third side, and the shortest distance from the center of the through hole to the first side is greater than a shortest distance from the center of the through hole to the fourth side.