# US 9,753,302 B2 · Lens drive apparatus, camera module and camera > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,753,302 B2 - Document ID: US9753302B2 - Status: Granted - Kind: B2 - Application number: 14/663,750 - Filed: 2015-03-20 - Published: 2015-07-09 - Granted: 2017-09-05 - Earliest claimed: 2009-08-21 - Assignees: Mitsumi Electric Co., Ltd. - Applicants: Mitsumi Electric Co., Ltd. - Inventors: Akihiro Moriya; Masayoshi Sugawara - Web page: https://patentgrep.com/patent/US9753302B2 ## CPC - H04N 23/687: {by shifting the lens or sensor position} - G02B 7/08: adapted to co-operate with a remote control mechanism - G02B 7/09: adapted for automatic focusing or varying magnification - G02B 13/001: {Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras (G02B23/243 takes precedence)} - 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 3/00: Focusing arrangements of general interest for cameras, projectors or printers - 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 17/00: Details of cameras or camera bodies; Accessories therefor (lens hoods or caps G03B11/04) - G03B 17/02: Bodies - 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 - H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices - H04N 23/68: for stable pick-up of the scene, e.g. compensating for camera body vibrations - H04N 23/682: {Vibration or motion blur correction} - H04N 25/00: Circuitry of solid-state image sensors [SSIS]; Control thereof - 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 - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - 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) ## Abstract A lens drive apparatus that displaces a lens holder in a direction of an optical axis and a direction orthogonal to the optical axis comprises: a drive section that displaces an assembly, which is formed by assembling a lens holder displaceable in the direction of the optical axis together with a magnet disposed around the lens holder, in the direction orthogonal to the optical axis by the magnet and a coil disposed at a position facing the magnet in collaboration with each other; and a Hall device that is disposed at a position shifted in the direction of the optical axis with respect to the coil and detects a position of the magnet in the direction orthogonal to the optical axis. ## Claims ### Claim 1 A lens drive apparatus for use in a camera module, which displaces a lens holder in a direction of an optical axis and first and second directions orthogonal to the optical axis and to each other, the lens drive apparatus comprising: a drive section that rocks an assembly, which is formed by assembling the lens holder together with a magnet disposed around the lens holder and together with a guide member configured to guide the lens holder such that the lens holder can move with respect to the magnet in the direction of the optical axis, in the first and second directions by the magnet and a first coil disposed at a position facing a first surface of the magnet in collaboration with each other; a base that is disposed so as to be spaced from the assembly and has an aperture through which the optical axis passes in a displacement range of the optical axis resulting from rocking of the assembly in the first and second directions; a rocking support member configured to support the assembly such that the assembly can rock with respect to the base in the first and second directions; and a Hall device that detects a position of the magnet in the first and second directions, wherein: the lens holder comprises a second coil, disposed at a position facing a second surface of the magnet, configured to move the lens holder with respect to the magnet in the direction of the optical axis in collaboration with the magnet, the magnet, the first coil and the Hall device are disposed at positions shifted in the direction of the optical axis, and the first coil and the second coil are respectively disposed such that a direction of the first surface of the magnet facing the first coil and a direction of the second surface of the magnet facing the second coil are different from each other. ### Claim 2 (depends on 1) The lens drive apparatus for use in a camera module according to claim 1, comprising: a plurality of suspension wires, as the rocking support member, each having a first end fixed to the base and a second end fixed to the assembly, the suspension wires being configured to support the assembly such that the assembly can rock in the first and second directions. ### Claim 3 (depends on 1) The lens drive apparatus for use in a camera module according to claim 1, wherein: the assembly includes: a magnet holder that holds the magnet; and a leaf spring, as the guide member, that is attached to the magnet holder and supports the lens holder such that the lens holder can move with respect to the magnet in the direction of the optical axis. ### Claim 4 (depends on 3) The lens drive apparatus for use in a camera module according to claim 3, wherein: the magnet holder has an octagonal cylindrical shape with four long sides and four short sides, and the magnet is disposed at positions of the long sides. ### Claim 5 (depends on 3) The lens drive apparatus for use in a camera module according to claim 3, wherein: the magnet holder has an octagonal cylindrical shape with four long sides and four short sides, and the magnet is disposed at positions of the short sides. ### Claim 6 (depends on 1) The lens drive apparatus for use in a camera module according to claim 1, wherein the assembly includes: a further coil that is disposed around the lens holder and moves the assembly in the direction of the optical axis in collaboration with the magnet. ### Claim 7 (depends on 1) The lens drive apparatus for use in a camera module according to claim 1, wherein the magnet is disposed between the coil and the Hall device. ### Claim 8 (depends on 1) The lens drive apparatus for use in a camera module according to claim 1, wherein: the first surface of the magnet facing the first coil is an upper or lower end surface of the magnet and the second surface of the magnet facing the second coil is an inner end surface of the magnet. ### Claim 9 (depends on 1) The lens drive apparatus for use in a camera module according to claim 1, wherein: the drive section is configured to rock the assembly with respect to the base only in the first and second directions by the magnet and the first coil in collaboration with each other, and the assembly is configured to move the lens holder with respect to the magnet only in the direction of the optical axis by the magnet and the second coil in collaboration with each other. ### Claim 10 (depends on 1) The lens drive apparatus for use in a camera module according to claim 1, wherein: the assembly comprises a ring-shaped section configured separately from the lens holder to hold the magnet, and the rocking support member has a first end fixed to the base at positions around the aperture and a second end fixed to the ring-shaped section of the assembly. ### Claim 11 (depends on 10) The lens drive apparatus for use in a camera module according to claim 10, wherein: the guide member comprises: an inner ring section attached to the lens holder; an outer ring section attached to the ring-shaped section of the assembly; and an arm section that links the inner ring section and the outer ring section, and the second end of the rocking support member is fixed to the outer ring section. ### Claim 12 (depends on 1) The lens drive apparatus for use in a camera module according to claim 1, wherein: the rocking support member is configured to support the assembly such that the assembly can rock parallel with the base. ### Claim 13 (depends on 1) A camera module comprising: the lens drive apparatus for use in a camera module according to claim 1; and an imaging device that captures a subject image formed by means of a lens section held by the lens holder. ### Claim 14 (depends on 13) A camera comprising: the camera module according to claim 13; and a control section that controls the camera module.