US 12,360,331 B2
Optical element driving mechanism
Chao-Chang Hu, Taoyuan (TW); Chen-Hsien Fan, Taoyuan (TW); Chih-Wen Chiang, Taoyuan (TW); and Chien-Yu Kao, Taoyuan (TW)
Assigned to TDK TAIWAN CORP., Taoyuan (TW)
Filed by TDK TAIWAN CORP., Taoyuan (TW)
Filed on Oct. 5, 2023, as Appl. No. 18/481,455.
Application 18/481,455 is a continuation of application No. 17/406,605, filed on Aug. 19, 2021, granted, now 11,815,736.
Claims priority of provisional application 63/078,641, filed on Sep. 15, 2020.
Prior Publication US 2024/0111125 A1, Apr. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 7/10 (2021.01); G02B 7/02 (2021.01); G02B 7/09 (2021.01); G02B 27/64 (2006.01); G03B 5/02 (2021.01); H02K 41/035 (2006.01)
CPC G02B 7/10 (2013.01) [G02B 7/025 (2013.01); G02B 7/09 (2013.01); G02B 27/646 (2013.01); G03B 5/02 (2013.01); G03B 2205/0046 (2013.01); G03B 2205/0069 (2013.01); H02K 41/0356 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical element driving mechanism, comprising:
a first movable assembly, configured to be connected to a first optical element;
a fixed assembly, wherein the first movable assembly is movable relative to the fixed assembly;
a first driving assembly, configured to drive the first movable assembly to move relative to the fixed assembly in a first dimension;
a second movable assembly, configured to be connected to a second optical element; and
a second driving assembly configured to drive the second movable assembly to move relative to the fixed assembly in the first dimension;
wherein the first movable assembly is movable relative to the fixed assembly in the first dimension within a first extreme range;
the second movable assembly is movable relative to the fixed assembly in the first dimension within a second extreme range;
the first extreme range is different from the second extreme range;
wherein the first driving assembly comprises:
a first coil;
a first permeability element, corresponding to the first coil;
a first magnetic element, corresponding to the first coil and configured to generate a first driving force, wherein the first magnetic element has a first surface which faces the first coil;
a first magnetic-enhancing element, corresponding to the first magnetic element and configured to adjust the magnetic field of the first magnetic element; and
a first fixed element, fixedly connected to the first permeability element;
wherein the first permeability element has a metal material;
the first coil is wound around the first permeability element;
the first magnetic-enhancing element is fixedly connected to the first magnetic element;
the first fixed element has a plastic material; and
wherein the first fixed element has a long strip-shaped structure, the first permeability element is fixedly connected to the first fixed element, and the first coil is wound around the first permeability element and the first fixed element.