# US 9,753,301 B2 · Lens drive apparatus, camera module and camera

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- Number: US 9,753,301 B2
- Document ID: US9753301B2
- Status: Granted
- Kind: B2
- Application number: 14/663,666
- 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/US9753301B2

## 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 base that has an aperture having a size greater than a displacement range of the optical axis resulting from displacement of the assembly in the direction orthogonal to the optical axis.

## Claims

### Claim 1

A lens drive apparatus that displaces a lens holder in a direction of an optical axis and a direction orthogonal to the optical axis, the lens drive apparatus comprising:
an assembly formed by assembling a lens holder having an outer peripheral wall to which a first coil wound therearound is attached, together with a magnet disposed around the lens holder and spaced from the outer peripheral wall, the assembly being configured to displace the lens holder with respect to the magnet only in the direction of the optical axis by the first coil and the magnet in collaboration with each other;
a drive section that is configured to displace the lens holder and the magnet of the assembly only in the direction orthogonal to the optical axis by the magnet and a second coil disposed at a position facing the magnet in collaboration with each other; and
a base that has an aperture through which the optical axis passes in a displacement range of the optical axis resulting from displacement of the assembly in the direction orthogonal to the optical axis.

### Claim 2 (depends on 1)

The lens drive apparatus according to claim 1, wherein the base is disposed at a position spaced from the assembly.

### Claim 3 (depends on 1)

The lens drive apparatus according to claim 1, comprising:
a plurality of suspension wires each including 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 is displaceable in the direction orthogonal to the optical axis.

### Claim 4 (depends on 1)

The lens drive apparatus according to claim 1, wherein the assembly includes:
a magnet holder that holds the magnet; and
a leaf spring that is attached to the magnet holder and supports the lens holder such that the lens holder is displaceable in the direction of the optical axis.

### Claim 5 (depends on 1)

The lens drive apparatus according to claim 1, comprising:
a Hall device that is disposed at a position facing the magnet and detects a position of the magnet in the direction orthogonal to the optical axis.

### Claim 6 (depends on 1)

The lens drive apparatus according to claim 1, comprising:
a housing that houses the assembly and the second coil, wherein:
the base serves as a bottom of the housing, and
the assembly and the second coil are disposed inside with respect to an outer peripheral edge of the base.

### Claim 7 (depends on 1)

A camera module comprising:
the lens drive apparatus according to claim 1; and
an imaging device disposed on an imaging board disposed on a side opposite to the assembly with respect to the base.

### Claim 8 (depends on 7)

A camera comprising:
the camera module according to claim 7; and
a control section that controls the camera module.

### Claim 9

A lens drive apparatus comprising:
an assembly comprising:
a lens holder capable of accommodating therein a lens section and having an outer peripheral wall to which a first coil wound therearound is attached; and
a magnet holder that holds a magnet disposed around the lens holder and spaced from the outer peripheral wall and that accommodates therein the lens holder such that the lens holder is displaceable with respect to the magnet only in a direction of an optical axis,
the assembly being configured to displace the lens holder with respect to the magnet only in the direction of the optical axis by the first coil and the magnet in collaboration with each other;
a housing that accommodates therein the assembly and a second coil disposed at a position facing the magnet; and
a base that serves as a bottom of the housing, wherein:
the base has an aperture through which the optical axis passes, and
the lens holder and the magnet holder holding the magnet disposed around the lens holder are configured to be displaced only in a direction orthogonal to the optical axis by the magnet and the second coil in collaboration with each other.

### Claim 10 (depends on 9)

A camera module comprising:
the lens drive apparatus according to claim 9; and
an imaging device disposed on an imaging board disposed on a side opposite to the lens holder and the magnet holder with respect to the base.

### Claim 11 (depends on 10)

A camera comprising:
the camera module according to claim 10; and
a control section that controls the camera module.
