# US 2017/0322476 A1 · Lens driving device

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- Number: US 2017/0322476 A1
- Document ID: US20170322476A1
- Status: Published application
- Kind: A1
- Application number: 15/526,914
- Filed: 2015-10-22
- Published: 2017-11-09
- Earliest claimed: 2014-11-28
- Assignees: Nidec Copal Corporation
- Applicants: Nidec Copal Corporation
- Inventors: Longji BAI
- Web page: https://patentgrep.com/patent/US20170322476A1

## CPC

- G03B 5/04: Vertical adjustment of lens; Rising fronts
- G02B 7/04: with mechanism for focusing or varying magnification
- G02B 7/09: adapted for automatic focusing or varying magnification
- 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 5/02: Lateral adjustment of lens
- G03B 13/36: Autofocus systems
- G02B 13/001: {Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras (G02B23/243 takes precedence)}
- G03B 2205/0015: by displacing one or more optical elements normal to the optical axis
- 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)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

Disclosed is a lens driving device includes: a lens frame; a support frame that elastically supports the lens frame in the optical-axis direction through plate springs; a base support member that elastically supports the lens frame supported by the support frame, in a direction intersecting the optical axis, through support wires; and a driving unit that drives the lens frame in one or both of the optical-axis direction and the direction intersecting the optical axis. The plate springs include elastic arm sections, respectively, which project outward of a portion at which the support frame is attached; and wire attaching sections which are connected to the elastic arm sections, respectively. A connecting position at which the wire attaching section and the elastic arm section are attached to each other is disposed outward of a fixing position where the leading end portion of a corresponding one of the support wires is fixed to the wire attaching section.

## Claims

### Claim 1

A lens driving device comprising:
a lens frame;
a supporting frame for supporting the lens frame elastically in the optical axial direction through a leaf spring;
a base supporting member for supporting elastically the lens frame, which is supported on the supporting frame, in a direction that is perpendicular to the optical axis, through a supporting wire; and
a driving portion for driving the lens frame in the optical axial direction and in one or both directions that are perpendicular to the optical axis, wherein:
the leaf spring comprises an elastic arm portion that is pulled to the outside by an attaching portion of the supporting frame, and a wire attaching portion that is connected to the elastic arm portion; and
the connecting position of the wire attaching portion and the elastic arm portion is disposed to the outside of a securing position for securing a tip end portion of the supporting wire to the wire attaching portion.

### Claim 2 (depends on 1)

The lens driving device as set forth in claim 1, wherein:
the leaf spring comprises a front side leaf spring wherein the front side of the lens frame is supported on the front side of the supporting frame, and a back side leaf spring wherein the back side of the lens frame is supported on the back side of the supporting frame; and
the elastic arm portion and the wire attaching portion are provided on the front side leaf spring.

### Claim 3 (depends on 2)

The lens driving device as set forth in claim 2, wherein:
in the front side leaf spring, the elastic arm portion and the wire attaching portion are arranged at axially symmetrical positions around the optical axis.

### Claim 4 (depends on 1)

The lens driving device as set forth in claim 1, wherein:
the elastic arm portions are provided in a pair on the left and right of the wire attaching portion.

### Claim 5 (depends on 1)

The camera comprising a lens driving device as set forth in claim 1.

### Claim 6 (depends on 1)

The mobile electronic device comprising a lens driving device as set forth in claim 1.