# US 11,079,567 B2 · Lens driving device, camera module, and optical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,079,567 B2 - Document ID: US11079567B2 - Status: Granted - Kind: B2 - Application number: 16/068,609 - Filed: 2017-01-11 - Published: 2019-02-07 - Granted: 2021-08-03 - Earliest claimed: 2016-01-11 - Assignees: LG Innotek Co., Ltd. - Applicants: LG Innotek Co., Ltd. - Inventors: Kap Jin Lee; Kyung Hwan Kim - Web page: https://patentgrep.com/patent/US11079567B2 ## CPC - G02B 7/09: adapted for automatic focusing or varying magnification - G03B 30/00: Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles - G01J 3/28: Investigating the spectrum (using colour filters G01J3/51) - G02B 5/28: Interference filters - G02B 7/02: for lenses {(supports for magnifying lenses G02B25/002)} - G02B 13/0055: {employing a special optical element} - G03B 3/10: Power-operated focusing - G03B 13/36: Autofocus systems - H02K 11/00: Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection (casings, enclosures or supports H02K5/00) - H02K 11/20: for measuring, monitoring, testing, protecting or switching (rectifiers H02K11/04; power electronics H02K11/33) - H02K 33/16: with polarised armatures moving in alternate directions by reversal or energisation of a single coil system - H02K 41/0356: {moving along a straight path} - G02B 7/021: {for more than one lens} - 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 5/00: Adjustment of optical system relative to image or object surface other than for focusing - G03B 2205/0069: using electromagnetic actuators, e.g. voice coils - G03B 2217/002: Details of arrangement of components in or on camera body - H02K 11/215: Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements - 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) - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract The present embodiment relates to a lens driving device comprising: a housing; a bobbin disposed inside the housing; a coil disposed at the bobbin; a magnet disposed in the housing and facing the coil; an elastic member coupled to the housing and the bobbin; and a damper disposed at the elastic member, wherein the elastic member comprises an outer part coupled to the housing, an inner part coupled to the bobbin, and a connection part for connecting the outer part and the inner part; and the damper is disposed at the connection part. ## Claims ### Claim 1 A lens driving device comprising: a housing; a bobbin disposed in the housing; a coil disposed on the bobbin; a magnet disposed on the housing and facing the coil; an elastic member coupled to the bobbin; and a damper disposed on the elastic member, wherein the elastic member comprises an inner part coupled to the bobbin, an outer part disposed outside the inner part, and a connection part connecting the outer part and the inner part, and wherein the damper is disposed on the connection part, wherein the connection part comprises a curved part having a curved shape, a first extension part extending from one end of the curved part, and a second extension part extending from the other end of the curved part, wherein the damper connects the first extension part and the second extension part, wherein the inner part includes a curved shape, wherein the damper is spaced apart from the outer part and the inner part, and wherein each of the first extension part and the second extension part straightly extends from the curved part. ### Claim 2 (depends on 1) The lens driving device of claim 1, wherein the elastic member comprises an upper elastic member disposed on an upper surface of the bobbin, and a lower elastic member disposed on a lower surface of the bobbin, and wherein the damper is disposed on the lower elastic member. ### Claim 3 (depends on 1) The lens driving device of claim 1, wherein the connection part comprises an outer extension part extending from the outer part, an inner extension part extending from the inner part, and a connecting extension part connecting the outer extension part and the inner extension part, and wherein the connecting extension part comprises the curved part, the first extension part, and the second extension part. ### Claim 4 (depends on 3) The lens driving device of claim 3, wherein the inner part comprises first and second coupling parts coupled to the bobbin and spaced apart from each other, a body part connecting the first and second coupling parts, and a protrusion part outwardly extending from the body part and at least a portion of the protrusion part being disposed between the first extension part and the second extension part, and wherein another damper connects the connecting extension part and the protrusion part. ### Claim 5 (depends on 4) The lens driving device of claim 4, wherein the connecting extension part comprises a third extension part slantedly extending from the second extension part, and a fourth extension part slantedly extending from the third extension part, and wherein each of the first to fourth extension parts is roundly formed at least on a partial portion thereof. ### Claim 6 (depends on 1) The lens driving device of claim 1, wherein the damper is spaced apart from the bobbin and the housing. ### Claim 7 (depends on 1) The lens driving device of claim 1, wherein at least a portion of the damper is disposed between the first extension part and the second extension part. ### Claim 8 (depends on 3) The lens driving device of claim 3, wherein the first extension part is disposed between the outer extension part and the curved part, and wherein the second extension part is disposed between the inner extension part and the curved part. ### Claim 9 (depends on 1) The lens driving device of claim 1, comprising: a sensing magnet disposed at one side of the bobbin; and a sensor disposed on the housing and facing the sensing magnet, wherein the sensor is disposed at a corner part of the housing. ### Claim 10 (depends on 9) The lens driving device of claim 9, wherein the magnet is disposed at a lateral part of the housing, and wherein the magnet is lopsidedly disposed to one side of corner part between both sides of the corner part of the housing. ### Claim 11 (depends on 9) The lens driving device of claim 9, comprising a compensating magnet disposed at an other side of the bobbin and having a shape and a magnetism corresponding to those of the sensing magnet. ### Claim 12 (depends on 9) The lens driving device of claim 9, comprising: a substrate disposed with the sensor; and a substrate reception part formed on an outer lateral surface of the housing and accommodating at least a portion of the substrate. ### Claim 13 (depends on 12) The lens driving device of claim 12, wherein the substrate comprises a body part accommodated into the substrate reception part, a terminal part extending downwardly from the body part, and an extension part bent from the body part to be extended inward of the corner part of the housing and mounted with the sensor, and wherein the body part is not horizontally overlapped with the magnet. ### Claim 14 (depends on 9) The lens driving device of claim 9, wherein the housing comprises a first lateral part and a third lateral part, each formed at an opposite side, a second lateral part and a fourth lateral part formed between the first lateral part and the third lateral part, each formed at an opposite side and first to fourth corner parts interposed between the first to fourth lateral parts, respectively, wherein the magnet comprises a first magnet unit disposed at the first lateral part, a second magnet unit disposed at the second lateral part, a third magnet unit disposed at the third lateral part, and a fourth magnet unit disposed at the fourth lateral part, wherein the sensor is disposed at the first corner part, a center of the first magnet unit is disposed to the fourth corner part closer than the first corner part, a center of the second magnet unit is disposed to the second corner part closer than the first corner part, a center of the third magnet unit is disposed to the second corner part closer than the third corner part, and a center of the fourth magnet unit is disposed to the fourth corner part closer than the third corner part. ### Claim 15 (depends on 2) The lens driving device of claim 2, wherein the lower elastic member comprises a first lower elastic unit electrically connected to a distal end of one side of the coil, and a second lower elastic unit spaced apart from the first lower elastic unit and electrically connected to the other distal end of the coil. ### Claim 16 (depends on 1) A camera module, comprising: a PCB (Printed Circuit Board); an image sensor disposed on the PCB; the lens driving device of claim 1 disposed on the PCB; and a lens coupled to the bobbin of the lens driving device. ### Claim 17 (depends on 16) An optical device, comprising a main body, the camera module of the claim 16 disposed on the main body to photograph an image of a subject, and a display part disposed on the main body to output the image photographed by the camera module. ### Claim 18 A lens driving device comprising: a housing; a bobbin disposed in the housing; a coil disposed on the bobbin; a magnet disposed on the housing and facing the coil; an upper elastic member coupled to the housing and the bobbin; and a damper disposed on the upper elastic member, wherein the upper elastic member comprises an outer part coupled to the housing, an inner part coupled to the bobbin, and a connection part connecting the outer part and the inner part, wherein the damper is disposed on the connection part, wherein the connection part comprises a curved part having a curved shape, a first extension part extending from one end of the curved part, and a second extension part extending from the other end of the curved part, and wherein the damper connects the first extension part and the second extension part. ### Claim 19 A lens driving device comprising: a cover member comprising an upper plate and a lateral plate extending from the upper plate; a bobbin disposed in the cover member; a housing disposed between the cover member and the bobbin; a base disposed below the housing and coupled to the lateral plate of the cover member; a coil disposed on the bobbin; a magnet disposed on the housing and facing the coil; a lower elastic member comprising an outer part disposed between the housing and the base, an inner part coupled to the bobbin and a connection part connecting the outer part and the inner part; and a damper disposed on the lower elastic member, wherein the connection part comprises a curved part having a curved shape, a first extension part extending from one end of the curved part, and a second extension part extending from the other end of the curved part, and wherein the damper connects the first extension part and the second extension part.