US 12,206,974 B2
Optical element driving mechanism
Chao-Chang Hu, Taoyuan (TW); and Shu-Shan Chen, Taoyuan (TW)
Assigned to TDK TAIWAN CORP., Taoyuan (TW)
Filed by TDK TAIWAN CORP., Taoyuan (TW)
Filed on Aug. 25, 2022, as Appl. No. 17/895,437.
Claims priority of provisional application 63/236,861, filed on Aug. 25, 2021.
Prior Publication US 2023/0067807 A1, Mar. 2, 2023
Int. Cl. H04N 23/57 (2023.01); G02B 7/04 (2021.01); G03B 9/36 (2021.01); H04N 23/51 (2023.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); H10N 30/20 (2023.01)
CPC H04N 23/57 (2023.01) [G02B 7/04 (2013.01); G03B 9/36 (2013.01); H04N 23/51 (2023.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); H10N 30/20 (2023.02)] 19 Claims
OG exemplary drawing
 
1. An optical element driving mechanism, comprising:
a fixed part;
a movable part, comprising:
a holder, holding an optical element; and
a supporting element, connected to the holder; and
a driving assembly, driving the movable part to move relative to the fixed part;
wherein the holder uses the supporting element as a fulcrum and moves relative to the fixed part around a first axis and a second axis,
wherein the first axis is not parallel to the second axis,
wherein the driving assembly comprises a piezoelectric assembly, and the piezoelectric assembly comprises:
a piezoelectric-assembly metal-plate, having a piezoelectric-assembly metal-plate through-hole; and
a plurality of piezoelectric elements, disposed on the piezoelectric-assembly metal-plate,
wherein the piezoelectric elements are rotationally symmetric with the piezoelectric-assembly metal-plate through-hole as the rotational symmetry center, and
wherein the piezoelectric-assembly metal-plate through-hole has a chamfered structure, and the supporting element is in contact with the chamfered structure of the piezoelectric-assembly metal-plate through-hole.