# US 2023/0266604 A1 · Camera module having a buffer unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0266604 A1 - Document ID: US20230266604A1 - Status: Published application - Kind: A1 - Application number: 18/141,255 - Filed: 2023-04-28 - Published: 2023-08-24 - Earliest claimed: 2011-10-28 - Assignees: LG Innotek Co., Ltd. - Applicants: LG Innotek Co., Ltd. - Inventors: Minsoo KIM; Seongcheol JEONG; Taemin HA; Seonyoung KIM; Junghyun LEE - Web page: https://patentgrep.com/patent/US20230266604A1 ## 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)} - G03B 3/10: Power-operated focusing - G03B 5/00: Adjustment of optical system relative to image or object surface other than for focusing - G03B 13/36: Autofocus systems - G03B 17/02: Bodies - H04N 23/51: Housings - H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices - H04N 23/6812: {based on additional sensors, e.g. acceleration sensors} - H04N 23/685: {performed by mechanical compensation} - H04N 23/687: {by shifting the lens or sensor position} - G03B 2205/0015: by displacing one or more optical elements normal to the optical axis - G03B 2205/0069: using electromagnetic actuators, e.g. voice coils - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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 ## Abstract An optical image stabilization OIS unit including a base; a holder module including an outer blade spaced apart from the base, a bobbin disposed in the outer blade, and a spring member connecting the bobbin and the outer blade; a first coil disposed on the bobbin; a magnet configured to move the bobbin by interacting with the first coil; a second coil configured to move the holder module by interacting with the magnet; a wire electrically connected with the first coil through the spring member; and a buffer unit connected with the wire, wherein the buffer unit has a curved shape having a curvature. ## Claims ### Claim 1 An optical image stabilization OIS unit, comprising: a base; a holder module comprising an outer blade spaced apart from the base, a bobbin disposed in the outer blade, and a spring member connecting the bobbin and the outer blade; a first coil disposed on the bobbin; a magnet configured to move the bobbin by interacting with the first coil; a second coil configured to move the holder module by interacting with the magnet; a wire electrically connected with the first coil through the spring member; and a buffer unit connected with the wire, wherein the buffer unit comprises a curved shape having a curvature. ### Claim 2 (depends on 1) The OIS unit of claim 1, wherein a distance between both ends of the buffer unit is configured to be adjustable. ### Claim 3 (depends on 2) The OIS unit of claim 2, wherein the distance between the both ends of the buffer unit is changed such that the buffer unit absorbs load applied to the holder module. ### Claim 4 (depends on 1) The OIS unit of claim 1, wherein the curved shape is formed by being bent twice or more. ### Claim 5 (depends on 1) The OIS unit of claim 1, wherein the buffer unit is configured to absorb load applied to the holder module. ### Claim 6 (depends on 1) The OIS unit of claim 1, wherein the wire is configured to support the holder module. ### Claim 7 (depends on 1) The OIS unit of claim 1, wherein the buffer unit is disposed nearer to the outer blade than to the base. ### Claim 8 (depends on 1) The OIS unit of claim 1, wherein the spring member comprises an upper spring member disposed on an upper portion of the outer blade, wherein the spring member comprises a lower spring member disposed on a lower portion of the outer blade, and wherein the buffer unit is disposed nearer to the upper spring member than to the lower spring member. ### Claim 9 (depends on 1) The OIS unit of claim 1, wherein the wire comprises at least six wires having a same length, wherein the buffer unit comprises at least six buffer units, and wherein the six buffer units are connected with the six wires, respectively. ### Claim 10 (depends on 1) The OIS unit of claim 1, comprising a first printed circuit board comprising a first portion disposed on the base and a second portion downwardly extending from the first portion, wherein the wire is coupled to the first portion of the first printed circuit board. ### Claim 11 (depends on 10) The OIS unit of claim 10, wherein the first printed circuit board comprises a plurality of terminals, wherein the wire comprises a plurality of wires, wherein the plurality of terminals of the first printed circuit board comprises two terminals for focusing and four terminals for optical image stabilization, and wherein the first coil is electrically connected to the two terminals for focusing through the spring member and two wires of the plurality of wires. ### Claim 12 (depends on 10) The OIS unit of claim 10, comprising a first solder disposed at one distal end of the wire to couple the wire to the holder module and a second solder disposed at the other distal end of the wire to be applied with a current to the first coil, wherein the wire and the spring member are electrically connected through the first solder, and wherein the first portion of the first printed circuit board is disposed between the first solder and the second solder. ### Claim 13 (depends on 12) The OIS unit of claim 12, wherein the second solder connects the wire to the first portion of the first printed circuit board, wherein the first portion of the first printed circuit board comprises a first surface facing the holder module, a second surface opposite to the first surface and a pad formed on the second surface of the first portion of the first printed circuit board and comprising a hole, and wherein the wire passes the hole of the pad and is coupled to the pad. ### Claim 14 (depends on 1) The OIS unit of claim 1, wherein the magnet comprises four magnets, wherein the second coil comprises four coils, and wherein the spring member comprises an upper spring member coupled with an upper portion of the outer blade, and a lower spring member coupled with a lower portion of the outer blade. ### Claim 15 (depends on 1) A camera module, comprising: a second printed circuit board; an image sensor disposed on the second printed circuit board; the OIS unit of claim 1 disposed on the second printed circuit board; and a lens coupled to the bobbin of the OIS unit. ### Claim 16 (depends on 15) A mobile phone comprising the camera module of claim 15. ### Claim 17 An optical image stabilization OIS unit, comprising: a shield can; a holder module comprising an outer blade disposed in the shield can, a bobbin disposed in the outer blade, and a spring member connecting the bobbin and the outer blade; a first coil disposed on the bobbin; a magnet configured to move the bobbin by interacting with the first coil; a second coil configured to move the holder module by interacting with the magnet; a wire electrically connected with the first coil through the spring member; and a buffer unit connected with the wire, wherein the buffer unit comprises a curved shape having a curvature. ### Claim 18 (depends on 17) The OIS unit of claim 17, wherein a distance between both ends of the buffer unit is configured to be adjustable. ### Claim 19 (depends on 18) The OIS unit of claim 18, wherein the distance between the both ends of the buffer unit is changed such that the buffer unit absorbs load applied to the holder module. ### Claim 20 An optical image stabilization OIS unit, comprising: a base; a holder module comprising an outer blade spaced apart from the base, a bobbin disposed in the outer blade, and a spring member connecting the bobbin and the outer blade; a first coil disposed on the bobbin; a magnet configured to move the bobbin by interacting with the first coil; and a second coil configured to move the holder module by interacting with the magnet.