US 12,405,510 B2
Driving mechanism
Tso-Hsiang Wu, Taoyuan (TW); Chao-Chang Hu, Taoyuan (TW); Yung-Yun Chen, Taoyuan (TW); and Chih-Wei Weng, Taoyuan (TW)
Assigned to TDK TAIWAN CORP., Taoyuan (TW)
Filed by TDK TAIWAN CORP., Taoyuan (TW)
Filed on Apr. 19, 2023, as Appl. No. 18/303,347.
Claims priority of provisional application 63/332,424, filed on Apr. 19, 2022.
Prior Publication US 2023/0333447 A1, Oct. 19, 2023
Int. Cl. G03B 9/06 (2021.01); F03G 7/06 (2006.01); G03B 7/10 (2021.01); G03B 9/22 (2021.01); G03B 30/00 (2021.01); H02K 41/035 (2006.01); G03B 13/36 (2021.01)
CPC G03B 9/06 (2013.01) [F03G 7/0614 (2021.08); G03B 7/10 (2013.01); G03B 9/22 (2013.01); H02K 41/0354 (2013.01); G03B 13/36 (2013.01); G03B 30/00 (2021.01)] 16 Claims
OG exemplary drawing
 
1. A driving mechanism for moving a first optical unit and a second optical unit, comprising:
a movable part, connected to the first optical unit;
a connecting part, connected to the movable part and forming a longitudinal guiding structure;
a first driving unit, comprising an SMA element to impel the movable part and the first optical unit relative to the connecting part;
a slider, movably disposed on the movable part and connected to the SMA element;
a holder, connected to the second optical unit and the connecting part;
a base, connected to the holder; and
a second driving unit, configured to impel the holder and the second optical unit relative to the base;
wherein the SMA element has a first length when the movable part is in a first position relative to the connecting part, and when a current signal is applied to the SMA element, the SMA element shrinks from a first length to a second length and impels the movable part from the first position to a second position relative to the connecting part;
wherein the slider contacts a first end of the guiding structure when the movable part is in the first position relative to the connecting part, and when the slider is impelled by the SMA element along the guiding structure from the first end to a second end of the guiding structure, the movable part is pushed by the slider from the first position to the second position.