# US 12,181,775 B2 · 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 12,181,775 B2 - Document ID: US12181775B2 - Status: Granted - Kind: B2 - Application number: 17/983,232 - Filed: 2022-11-08 - Published: 2023-03-02 - Granted: 2024-12-31 - Earliest claimed: 2018-10-05 - Assignees: TDK Taiwan Corp. - Applicants: TDK Taiwan Corp. - Inventors: Chin-Ming Hu; Sheng-Zong Chen; Shou-Jen Liu; Yung-Ping Yang; Sin-Jhong Song - Web page: https://patentgrep.com/patent/US12181775B2 ## CPC - G03B 13/34: Power focusing - G03B 3/10: Power-operated focusing - H04N 23/51: Housings - H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils - H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof - G02B 7/04: with mechanism for focusing or varying magnification - G02B 7/08: adapted to co-operate with a remote control mechanism - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed part, a movable part, and a driving assembly. The fixed part includes a bottom. The movable part is movable relative to the fixed part. The movable part holds an optical element with an optical axis. The driving assembly drives the movable part to move relative to the fixed part. The bottom includes a base and an embedded assembly. The embedded assembly is partially embedded in the base. The embedded assembly includes a magnetic-permeable material. ## Claims ### Claim 1 An optical element driving mechanism comprising: a fixed part comprising a bottom; a movable part movable relative to the fixed part and holding an optical element with an optical axis; and a driving assembly driving the movable part to move relative to the fixed part, wherein the bottom comprises: a base; and an embedded assembly partially embedded in the base, wherein the embedded assembly comprises a magnetic-permeable material, a strengthening frame, and a circuit member, the strengthening frame comprises a perforation through which the optical axis passes, and when viewed along the optical axis, the strengthening frame does not overlap the circuit member, and wherein the strengthening frame and the circuit member are not electrically connected. ### Claim 2 (depends on 1) The optical element driving mechanism as claimed in claim 1, wherein the magnetic-permeable material comprises Fe, Ni, Co, or an alloy thereof. ### Claim 3 (depends on 1) The optical element driving mechanism as claimed in claim 1, wherein the strengthening frame further comprises a closed structure, the closed structure is ring-shaped, and the closed structure surrounds the optical axis. ### Claim 4 (depends on 1) The optical element driving mechanism as claimed in claim 1, wherein the base comprises a pillar, the strengthening frame further comprises a bending portion extending in the optical axis, and the bending portion is embedded in the pillar. ### Claim 5 (depends on 1) The optical element driving mechanism as claimed in claim 1, wherein the strengthening frame comprises a first protrusion and a second protrusion close to the first protrusion, the first protrusion and the second protrusion extend in a direction that is perpendicular to the optical axis, and when viewed along the optical axis, an area of the first protrusion is different from an area of the second protrusion. ### Claim 6 (depends on 5) The optical element driving mechanism as claimed in claim 5, wherein the driving assembly comprises a magnetic element, and when viewed along the optical axis, the magnetic element at least partially overlaps the first protrusion. ### Claim 7 (depends on 6) The optical element driving mechanism as claimed in claim 6, wherein when viewed along the optical axis, a length of the magnetic element is at least five times greater than a length of the first protrusion. ### Claim 8 (depends on 1) The optical element driving mechanism as claimed in claim 1, wherein the strengthening frame further comprises a plurality of first protrusions that are rotationally symmetric. ### Claim 9 (depends on 1) The optical element driving mechanism as claimed in claim 1, wherein the embedded assembly comprises two circuit members, and when viewed along the optical axis, the two circuit members are located on two adjacent corners of the optical element driving mechanism. ### Claim 10 (depends on 1) The optical element driving mechanism as claimed in claim 1, further comprising an elastic element between the movable part and the bottom, wherein the elastic element comprises an electrical connection portion, and the electrical connection portion comprises an arc that is greater than 180 degrees. ### Claim 11 (depends on 10) The optical element driving mechanism as claimed in claim 10, wherein the elastic element further comprises a notch and a through hole, and the notch is closer to the electrical connection portion than the through hole. ### Claim 12 (depends on 10) The optical element driving mechanism as claimed in claim 10, further comprising an electrical connection element disposed on the electrical connection portion, wherein the electrical connection element comprises a curved surface corresponding to the arc. ### Claim 13 (depends on 12) The optical element driving mechanism as claimed in claim 12, further comprising an adhesive element disposed on the electrical connection element. ### Claim 14 (depends on 12) The optical element driving mechanism as claimed in claim 12, wherein the driving assembly further comprises an electrical contact spaced a distance apart from the electrical connection portion, and a portion of the electrical connection element is located between the electrical contact and the electrical connection portion. ### Claim 15 (depends on 10) The optical element driving mechanism as claimed in claim 10, wherein the elastic element further comprises a deformation portion with a first segment and a second segment, and when viewed along the optical axis, a width of the first segment is greater than a width of the second segment. ### Claim 16 (depends on 1) The optical element driving mechanism as claimed in claim 1, further comprising an elastic element located between the movable part and the bottom, wherein the bottom comprises a pillar, and the elastic element comprises an opening facing the pillar. ### Claim 17 (depends on 16) The optical element driving mechanism as claimed in claim 16, further comprising an adhesive element disposed in the opening to connect the elastic element to the bottom. ### Claim 18 An optical element driving mechanism comprising: a fixed part comprising a bottom; a movable part movable relative to the fixed part and holding an optical element with an optical axis; and a driving assembly driving the movable part to move relative to the fixed part, wherein the bottom comprises: a base; and an embedded assembly partially embedded in the base, wherein the embedded assembly comprises a magnetic-permeable material and a strengthening frame, and the strengthening frame comprises a perforation through which the optical axis passes and a bending portion extending in the optical axis, and wherein the base comprises a pillar, and the bending portion is embedded in the pillar. ### Claim 19 An optical element driving mechanism comprising: a fixed part comprising a bottom; a movable part movable relative to the fixed part and holding an optical element with an optical axis; and a driving assembly driving the movable part to move relative to the fixed part, wherein the bottom comprises: a base; and an embedded assembly partially embedded in the base, wherein the embedded assembly comprises a magnetic-permeable material and a strengthening frame, and the strengthening frame comprises a perforation through which the optical axis passes, and wherein the strengthening frame further comprises a first protrusion and a second protrusion close to the first protrusion, the first protrusion and the second protrusion extend in a direction that is perpendicular to the optical axis, and when viewed along the optical axis, an area of the first protrusion is different from an area of the second protrusion. ### Claim 20 An optical element driving mechanism comprising: a fixed part comprising a bottom; a movable part movable relative to the fixed part and holding an optical element with an optical axis; a driving assembly driving the movable part to move relative to the fixed part; an elastic element between the movable part and the bottom, wherein the elastic element comprises an electrical connection portion, and the electrical connection portion comprises an arc that is greater than 180 degrees; and an electrical connection element disposed on the electrical connection portion, wherein the electrical connection element comprises a curved surface corresponding to the arc, wherein the bottom comprises: a base; and an embedded assembly partially embedded in the base, wherein the embedded assembly comprises a magnetic-permeable material, and wherein the driving assembly further comprises an electrical contact spaced a distance apart from the electrical connection portion, and a portion of the electrical connection element is located between the electrical contact and the electrical connection portion. ### Claim 21 An optical element driving mechanism comprising: a fixed part comprising a bottom; a movable part movable relative to the fixed part and holding an optical element with an optical axis; a driving assembly driving the movable part to move relative to the fixed part; and an elastic element between the movable part and the bottom, wherein the elastic element comprises an electrical connection portion, and the electrical connection portion comprises an arc that is greater than 180 degrees, wherein the bottom comprises: a base; and an embedded assembly partially embedded in the base, wherein the embedded assembly comprises a magnetic-permeable material, and wherein the elastic element further comprises a deformation portion comprising a first segment and a second segment, and when viewed along the optical axis, a width of the first segment is greater than a width of the second segment. ### Claim 22 An optical element driving mechanism comprising: a fixed part comprising a bottom, wherein the bottom comprises a pillar; a movable part movable relative to the fixed part and holding an optical element with an optical axis; a driving assembly driving the movable part to move relative to the fixed part; an elastic element located between the movable part and the bottom, wherein the elastic element comprises an opening facing the pillar; and an adhesive element disposed in the opening to connect the elastic element to the bottom, wherein the bottom comprises: a base; and an embedded assembly partially embedded in the base, wherein the embedded assembly comprises a magnetic-permeable material.