# US 2017/0285362 A1 · Lens driving mechanism and method for controlling the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0285362 A1 - Document ID: US20170285362A1 - Status: Published application - Kind: A1 - Application number: 15/463,616 - Filed: 2017-03-20 - Published: 2017-10-05 - Earliest claimed: 2016-04-01 - Assignees: TDK Taiwan Corp. - Applicants: TDK Taiwan Corp. - Inventors: Chao-Chang HU; Chen-Hsien FAN; Yi-Liang CHAN - Web page: https://patentgrep.com/patent/US20170285362A1 ## CPC - G02B 27/646: {compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68)} - G02B 7/026: {using retaining rings or springs (G02B7/027 takes precedence)} - G02B 7/04: with mechanism for focusing or varying magnification - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A lens driving mechanism is provided. The lens driving mechanism is configured to drive an optical lens, including a holder, a base, a first elastic element, and a first biasing element. The optical lens is disposed in a receiving space of the holder. The base has a central axis, and the holder is movable relative to the base. The first elastic element is connected to the holder and the base. The first biasing element exerts a force on the holder so that an optical axis of the optical lens has an angular displacement relative to the central axis. ## Claims ### Claim 1 A lens driving mechanism, configured to move an optical lens, comprising: a base, having a central axis; a holder, configured to hold the optical lens, wherein the holder is movable relative to the base; a first elastic element, connected to the holder and the base; and a first biasing element, connected to the holder and the base, wherein the first biasing element forces the holder and the optical lens to move relative to the base, and an optical axis of the optical lens has an angular displacement relative to the central axis. ### Claim 2 (depends on 1) The lens driving mechanism as claimed in claim 1, wherein the first biasing element is made of a shape-memory alloy material. ### Claim 3 (depends on 1) The lens driving mechanism as claimed in claim 1, further comprising a conductor formed on the base by insert molding or 3D molded interconnect device technology, wherein the conductor is electrically connected to the first biasing element. ### Claim 4 (depends on 1) The lens driving mechanism as claimed in claim 1, wherein the first biasing element has a first section and a U-shaped second section, and the first section is substantially parallel to the central axis and connects to the second section. ### Claim 5 (depends on 4) The lens driving mechanism as claimed in claim 4, wherein the first biasing further has a third section substantially perpendicular to the central axis, and the second section connects to the first section and the third section. ### Claim 6 (depends on 5) The lens driving mechanism as claimed in claim 5, wherein the second section and the third section are located on opposite sides of the first section. ### Claim 7 (depends on 1) The lens driving mechanism as claimed in claim 1, wherein the base has a main body and at least one protrusion, the protrusion protrudes toward the holder from the main body, and the first elastic element connects to the protrusion and the holder. ### Claim 8 (depends on 1) The lens driving mechanism as claimed in claim 1, wherein the lens driving mechanism further comprises a second biasing element and a plate, the second biasing element connects to the base and the plate, and the second biasing element forces the base and the holder to move relative to the plate. ### Claim 9 (depends on 8) The lens driving mechanism as claimed in claim 8, wherein the second biasing element forces the base and the holder to move relative to the plate in a direction that is substantially perpendicular to the central axis. ### Claim 10 (depends on 8) The lens driving mechanism as claimed in claim 8, wherein the second biasing element is made of a shape-memory alloy material. ### Claim 11 (depends on 8) The lens driving mechanism as claimed in claim 8, wherein the first biasing element and the second biasing element are situated in different positions along the central axis. ### Claim 12 (depends on 8) The lens driving mechanism as claimed in claim 8, wherein the lens driving mechanism further comprises a rolling element disposed between the base and the plate. ### Claim 13 (depends on 8) The lens driving mechanism as claimed in claim 8, further comprising a second elastic element connected to the base and the plate. ### Claim 14 (depends on 8) The lens driving mechanism as claimed in claim 8, wherein the lens driving mechanism further comprises an image sensor affixed to the base. ### Claim 15 (depends on 14) The lens driving mechanism as claimed in claim 14, wherein the base is between the holder and the plate, and the image sensor is between the base and the plate. ### Claim 16 (depends on 1) A method for controlling the lens driving mechanism as claimed in claim 1, wherein the lens driving mechanism further comprises a plurality of first biasing elements disposed on different sides of the base, the method comprising: applying a plurality of driving signals to the respective first biasing elements to move the holder along the central axis relative to the base. ### Claim 17 (depends on 1) A method for controlling the lens driving mechanism as claimed in claim 1, wherein the lens driving mechanism further comprises a plurality of first biasing elements disposed on different sides of the base, the method comprising: applying a plurality of driving signals to the respective first biasing elements so that the optical axis has an angular displacement relative to the central axis.