Lens driving device, camera module and optical instrument

Patent metadata

Field	Value
Publication number	US-2022019129-A1
Application number	US-202117476805-A
Country	US
Kind code	A1
Filing date	Sep 16, 2021
Priority date	Feb 10, 2017
Publication date	Jan 20, 2022
Grant date	—

Abstract

A camera module including a first camera module and a second camera module including a second side that faces a first side of the first camera module, wherein the first camera module includes a housing; a bobbin disposed inside the housing; a coil disposed on the bobbin; and a magnet arranged at a side of the housing and facing the coil, wherein the magnet is disposed biased toward a center line of the side of the housing.

First claim

What is claimed is:

1 . A camera module comprising:
a first camera module; and a second camera module including a second side that faces a first side of the first camera module, wherein the first camera module comprises:
a housing;
a bobbin disposed inside the housing;
a coil disposed on the bobbin; and
a magnet arranged at a side of the housing and facing the coil,
wherein the magnet is disposed biased toward a center line of the side of the housing.

2 . The camera module according to claim 1 , wherein the magnet comprises:
an upper surface; a lower surface; an inner surface facing the coil; an outer surface disposed on the reverse side to the inner surface; and two side surfaces connecting the inner surface and the outer surface, wherein a depressed part is provided on the side surface of the magnet, among the two side surfaces of the magnet, that is disposed on the first side of the first camera module, the depressed part being formed by recessing a portion of the side surface of the magnet.

3 . The camera module according to claim 1 , wherein the housing includes a first side surface facing the second camera module and a second side surface opposite to the first side surface, and
wherein the magnet is biased toward the second side surface rather than the first side surface.

4 . The camera module according to claim 1 , further comprising:
an upper elastic member disposed above the bobbin and coupled to the bobbin and the housing; a lower elastic member disposed below the bobbin and coupled to the bobbin and the housing; and a base disposed below the housing, wherein the lower elastic member is formed in a pair spaced apart from each other and electrically connected to the coil.

5 . The camera module according to claim 1 , wherein the second camera module comprises:
a second housing; a second bobbin disposed inside the second housing of the second camera module; a second base disposed below the second housing of the second camera module; a second magnet disposed in the second housing of the second camera module; a first coil disposed on an outer circumferential surface of the second bobbin of the second camera module and facing the second magnet of the second camera module; and a second coil disposed between the second housing of the second camera module and the second base of the second camera module and facing the second magnet of the second camera module, wherein the second magnet of the second camera module comprises four magnets and is disposed at the corner of the second housing of the second camera module.

6 . The camera module according to claim 1 , wherein the first camera module is an AF (Auto Focus) module, and the second camera module is an OIS (Optical Image Stabilization) module.

7 . The camera module according to claim 1 , wherein the housing includes a support portion for supporting an inner surface of the magnet.

8 . The camera module according to claim 7 , wherein the support portion is disposed to face a guide portion.

9 . The camera module according to claim 5 , wherein an inner surface of the second housing is provided with a magnet coupling portion formed by being partly depressed outward and in which the second magnet is disposed.

10 . The camera module according to claim 1 , wherein the first camera module and the second camera module are spaced apart from each other by a predetermined distance.

11 . A camera module comprising:
a housing; a bobbin disposed inside the housing; a first coil disposed on the bobbin; a first magnet disposed in the housing and facing the first coil; a base disposed under the housing; a substrate including a second coil facing the first magnet and disposed on the base; and a second magnet disposed on the bobbin, wherein the housing includes a first side portion, a second side portion, and a first corner portion disposed between the first side portion and the second side portion, and wherein the first magnet includes a first magnet unit disposed on the first side portion and a second magnet unit disposed on the second side portion.

12 . The camera module according to claim 11 , comprising a first sensor disposed on the base and sensing the first magnet, and a second sensor disposed in the housing and sensing the second magnet.

13 . The camera module according to claim 12 , wherein the second sensor is disposed in the first corner portion disposed between the first side portion and the second side portion.

14 . The camera module according to claim 11 , wherein the first magnet unit has a first side disposed on the side of the first corner portion, a second side facing the first coil, a third side opposite to the first side, and a fourth side opposite to the second side, and
wherein an area of the second side of the first magnet unit is smaller than an area of the fourth side of the first magnet unit, and an area of the first side of the first magnet unit is smaller than an area of the second side of the first magnet unit.

15 . The camera module according to claim 11 , wherein the second magnet unit has a fifth side disposed on the side of the first corner portion, a sixth side facing the first coil, a seventh side opposite to the fifth side, and an eighth side opposite to the sixth side, and
wherein an area of the sixth side of the second magnet unit is smaller than an area of the eighth side of the second magnet unit, and an area of the fifth side of the second magnet unit is smaller than an area of the seventh side of the second magnet unit.

16 . The camera module according to claim 13 , comprising a second substrate on which the second sensor is disposed,
wherein a distance between the second sensor and the second magnet is shorter than a distance between the second substrate and the second magnet.

17 . The camera module according to claim 11 , wherein the first magnet unit includes a first surface facing the first coil, and a second surface disposed on the side of the first corner portion, and
wherein a size of the second surface is smaller than a size of the first surface.

18 . A camera module comprising:
a cover including a first side and a second side disposed opposite to the first side; a bobbin disposed inside the cover; a coil disposed on the bobbin; and two magnets disposed opposite to the coil on a side of the cover and facing each other, wherein each of the two magnets includes an upper surface, a lower surface, an inner surface facing the coil, an outer surface disposed opposite to the inner surface, and both sides connecting the inner surface and the outer surface, wherein both side surfaces of each of the two magnets include a first surface disposed on the first side of the cover, and a second surface disposed opposite to the first surface, and wherein a center of the outer surface of each of the two magnets is disposed to be biased toward the second side than the first side of the cover.

19 . An optical instrument comprising:
a main body; a dual camera module disposed in the main body and configured to photograph an image of a subject; and a display unit disposed in the main body and outputting an image photographed by the dual camera module, wherein the dual camera module includes a first camera module and a second camera module including a second side that faces a first side of the first camera module, wherein the first camera module comprises:
a housing;
a bobbin disposed inside the housing;
a coil disposed on the bobbin; and
a magnet arrange

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Sung Guk
• Lee Seong Min
• Min Sang Jun
• Jung Tae Jin

Classifications

• G03B30/00

  Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles · CPC title

• G03B19/07

  having more than one objective · CPC title

• G03B17/14

  interchangeably · CPC title

• G03B13/36 Primary

  Autofocus systems · CPC title

• G03B5/02 Primary

  Lateral adjustment of lens · CPC title