# US 10,321,061 B2 · Camera-shake correction apparatus, camera module and camera

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- Number: US 10,321,061 B2
- Document ID: US10321061B2
- Status: Granted
- Kind: B2
- Application number: 14/664,198
- Filed: 2015-03-20
- Published: 2015-07-09
- Granted: 2019-06-11
- 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/US10321061B2

## 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 in collaboration with a magnet and a coil that includes: a first coil that is disposed at a position shifted in a radial direction of the lens holder with respect to the magnet and displaces the lens holder in the direction of the optical axis; and a second coil that is disposed at a position shifted in the direction of the optical axis with respect to the magnet and displaces the lens holder in the direction orthogonal to the optical axis, comprises a Hall device that is disposed at a position shifted in the direction of the optical axis with respect to the second coil and detects a position of the magnet in the direction orthogonal to the optical axis.

## Claims

### Claim 1

A camera-shake correction apparatus comprising:
an autofocusing lens drive apparatus comprising a focusing coil and a permanent magnet that are configured to collaborate to move a lens holder in a direction of an optical axis, the lens holder comprising a tubular section that holds a lens barrel;
an actuator comprising a shake correction coil and a permanent magnet that are configured to collaborate to move the autofocusing lens drive apparatus in a first direction and a second direction that are orthogonal to the optical axis and orthogonal to each other, the permanent magnet of the actuator being common with the permanent magnet of the autofocusing lens drive apparatus;
a ring-shaped base that is disposed to be spaced from a bottom surface of the autofocusing lens drive apparatus and has a rectangular external shape and a circular aperture inside;
a plurality of suspension wires each extending along the optical axis and each having a first end fixed to the base at an outer peripheral section thereof and a second end fixed to an upper end of the autofocusing lens drive apparatus, the suspension wires being configured to support the autofocusing lens drive apparatus such that the autofocusing lens drive apparatus is capable of rocking in the first direction and the second direction; and
a Hall device, disposed on the base to face the permanent magnet, that detects a first position of the permanent magnet in the first direction and a second position of the permanent magnet in the second direction; wherein:
the actuator comprises a first direction actuator comprising two shake correction coils formed on a ring-shaped coil board and disposed to face each other in the first direction, and a second direction actuator comprising two shake correction coils formed on the ring-shaped coil board and disposed to face each other in the second direction, and is configured to move an entirety of the autofocusing lens drive apparatus in the first direction and the second direction by collaboration of these four shake correction coils and the permanent magnet,
the autofocusing lens drive apparatus further comprises a magnet holder that is disposed around the lens holder to hold the permanent magnet, and a pair of leaf springs that connect and are fixed between the lens holder and the magnet holder and that are configured to support the lens holder such that the lens holder is displaceable in the direction of the optical axis while positioned in a radial direction, and
the permanent magnet is disposed at an upper side or an lower side of each of the four shake correction coils and facing the focusing coil.

### Claim 2 (depends on 1)

A camera module comprising:
the autofocusing lens drive apparatus 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 3 (depends on 2)

A camera comprising:
the camera module according to claim 2; and
a control section that controls the camera module.