# US 2021/0278627 A1 · Optical element driving mechanism > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0278627 A1 - Document ID: US20210278627A1 - Status: Published application - Kind: A1 - Application number: 17/193,579 - Filed: 2021-03-05 - Published: 2021-09-09 - Earliest claimed: 2020-03-06 - Assignees: TDK Taiwan Corp. - Applicants: TDK Taiwan Corp. - Inventors: Yi-Ho CHEN; Chao-Chang HU; Mao-Kuo HSU; Shu-Shan CHEN; Chih-Wei WENG; Kai-Jing FU; Sung-Mao TSAI - Web page: https://patentgrep.com/patent/US20210278627A1 ## CPC - G02B 26/101: {with both horizontal and vertical deflecting means, e.g. raster or XY scanners (colour television using laser beams scanning a display screen H04N9/3129)} - G02B 7/1821: {for rotating or oscillating mirrors} - G02B 26/085: {the reflecting means being moved or deformed by electromagnetic means} - G02B 26/105: {with one or more pivoting mirrors or galvano-mirrors (G02B26/101 takes precedence)} - G02B 3/12: Fluid-filled or evacuated lenses - G02B 7/023: {permitting adjustment} - G02B 7/026: {using retaining rings or springs (G02B7/027 takes precedence)} - G02B 7/08: adapted to co-operate with a remote control mechanism - G02B 7/09: adapted for automatic focusing or varying magnification - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An optical element driving mechanism is provided in the present disclosure. The optical element driving mechanism includes a fixed portion, a movable portion, a driving assembly and a first connecting assembly. The movable portion is connected to an optical element. The movable portion moves relative to the fixed portion. The driving assembly drives the movable portion to move relative to the fixed portion. The movable portion is movably connected to the fixed portion via the first connecting assembly. ## Claims ### Claim 1 An optical element driving mechanism, comprising: a fixed portion; a movable portion, connected to an optical element, moving relative to the fixed portion; a driving assembly, driving the movable portion to move relative to the fixed portion; and a first connecting assembly, wherein the movable portion is movably connected to the fixed portion via the first connecting assembly. ### Claim 2 (depends on 1) The optical element driving mechanism as claimed in claim 1, wherein the movable portion comprises: a frame; a holder, connected to the optical element, moving relative to the frame; and a second connecting assembly, wherein the holder is movably connected to the frame via the second connecting assembly. ### Claim 3 (depends on 2) The optical element driving mechanism as claimed in claim 2, wherein the movable portion has a first resonant frequency relative to the fixed portion, and the holder has a second resonant frequency relative to the frame, wherein the first resonant frequency and the second resonant frequency are different. ### Claim 4 (depends on 2) The optical element driving mechanism as claimed in claim 2, wherein: the first connecting assembly has a strip structure extending along a first direction; the second connecting assembly has a strip structure extending along a second direction; wherein the first direction is not parallel to the second direction, and the largest dimension of the first connecting assembly in the first direction is different from the largest dimension of the second connecting assembly in the second direction. ### Claim 5 (depends on 4) The optical element driving mechanism as claimed in claim 4, wherein the first direction is perpendicular to the second direction, and the largest dimension of the first connecting assembly in the first direction is greater than the largest dimension of the second connecting assembly in the second direction. ### Claim 6 (depends on 4) The optical element driving mechanism as claimed in claim 4, further comprising a control assembly outputting a first driving signal and a second driving signal, wherein the driving assembly comprises: a first driving element, comprising: a first magnetic unit with a polygonal strip structure, extending along the first direction; and a first coil receiving the first driving signal and the second driving signal; wherein the first coil receives the first driving signal, so that the driving assembly drives the movable portion to move relative to the fixed portion in a first dimension, and wherein the first coil receives the second driving signal, so that the driving assembly drives the holder to move relative to the frame in a second dimension; wherein the first dimension is different from the second dimension. ### Claim 7 (depends on 6) The optical element driving mechanism as claimed in claim 6, wherein a movement in the first dimension is a rotation about a first rotation axis, and a movement in the second dimension is a rotation about a second rotation axis. ### Claim 8 (depends on 7) The optical element driving mechanism as claimed in claim 7, wherein the first rotation axis is parallel to the first direction, and the second rotation axis is parallel to the second direction. ### Claim 9 (depends on 7) The optical element driving mechanism as claimed in claim 7, wherein the first driving signal comprises: a travelling signal, received by the first coil, driving the movable portion to perform a first rotation about the first rotation axis relative to the fixed portion; and a return signal, received by the first coil, driving the movable portion to perform a second rotation about the first rotation axis relative to the fixed portion; wherein the absolute value of the angular velocity of the first rotation is different from the absolute value of the angular velocity of the second rotation. ### Claim 10 (depends on 9) The optical element driving mechanism as claimed in claim 9, wherein the absolute value of the angular velocity of the first rotation is less than the absolute value of the angular velocity of the second rotation. ### Claim 11 (depends on 6) The optical element driving mechanism as claimed in claim 6, wherein the frequency of the second driving signal is equal to the second resonant frequency. ### Claim 12 (depends on 6) The optical element driving mechanism as claimed in claim 6, further comprising a main axis perpendicular to the first direction and the second direction, wherein when viewed along the main axis, a first connecting line is formed between the first magnetic unit or the first coil and the main axis, wherein the first connecting line is not parallel to the first direction or the second direction. ### Claim 13 (depends on 6) The optical element driving mechanism as claimed in claim 6, wherein the first coil receives the first driving signal and the second driving signal at the same time, so that the driving assembly drives the movable portion to move in the first dimension relative to the fixed portion and the holder to move in the second dimension relative to the frame at the same time. ### Claim 14 (depends on 6) The optical element driving mechanism as claimed in claim 6, wherein the driving assembly further comprises: a second driving element, comprising: a second magnetic unit with a polygonal strip structure, extending along the first direction; and a second coil receiving the first driving signal and the second driving signal. ### Claim 15 (depends on 2) The optical element driving mechanism as claimed in claim 2, further comprising an emission element emitting a light ray to the optical element connected to the holder; wherein the light ray is affected by the movement of the optical element and changes the travelling direction when the holder is driven by the driving assembly to move relative to the frame. ### Claim 16 (depends on 15) The optical element driving mechanism as claimed in claim 15, wherein the light ray emitted by the emission element is an impulse wave with at least two different frequencies. ### Claim 17 (depends on 15) The optical element driving mechanism as claimed in claim 15, wherein the optical element comprises a reflecting mirror. ### Claim 18 (depends on 2) The optical element driving mechanism as claimed in claim 2, further comprising a first damping element limiting the movement of the movable portion relative to the fixed portion, wherein the first damping element is in direct contact with the first connecting assembly. ### Claim 19 (depends on 18) The optical element driving mechanism as claimed in claim 18, further comprising a second damping element limiting the movement of the holder relative to the frame, wherein the second damping element is in direct contact with the second connecting assembly. ### Claim 20 (depends on 1) An optical system, comprising: a plurality of optical element driving mechanisms as claimed in claim 1, wherein the optical element driving mechanisms are arranged along a third direction, wherein each of the optical element driving mechanisms outputs a piece of information; and a calculating unit, integrating multiple pieces of information output by the optical element driving mechanisms into an integrated information, wherein the scope of the integrated information is greater than the scope of any one of the information.