Camera module
A camera module includes a housing; a plurality of movable lens modules disposed in an internal space of the housing and configured to be movable in an optical axis direction, each of the plurality of movable lens modules comprising at least one lens; and a stopper configured to prevent contact between at least two of the plurality of movable lens modules, wherein the stopper includes a frame mounted on the housing; an extension portion extending from the frame into the internal space of the housing to face a side of one movable lens module of the plurality of movable lens modules in the optical axis direction; and a damping member disposed on the extension portion to face the side of the one movable lens module in the optical axis direction.
1 . A camera module comprising:
a housing;
at least one lens barrel including a first lens barrel disposed in the housing and to be movable in an optical axis direction;
a reflection module disposed in front of the first lens barrel and to be rotatable with respect to the housing;
a driving portion comprising a magnet disposed on the first lens barrel and a coil disposed to face the magnet in a first axis direction perpendicular to the optical axis direction, and
a first plurality of ball bearings disposed between the first lens barrel and the housing,
wherein a pulling magnet is disposed on the first lens barrel, and a pulling yoke facing the pulling magnet is disposed on the housing,
wherein the first lens barrel comprises one side surface and the other side surface spaced apart in the first axis direction, and the magnet is disposed on the one side surface of the first lens barrel,
wherein a total number of the first plurality of ball bearings is three, and
two ball bearings among the three ball bearings are disposed closer to the one side surface than to the other side surface.
2 . The camera module of claim 1 , wherein a remaining one ball bearing among the three ball bearings is disposed closer to the other side surface than to the one side surface.
3 . The camera module of claim 2 , wherein the pulling magnet is disposed closer to the two ball bearings than to the one ball bearing.
4 . The camera module of claim 1 , wherein two ball bearings are disposed in a space between the one side surface of the lens barrel and the pulling magnet.
5 . The camera module of claim 1 , wherein the two ball bearings are spaced apart in the optical axis direction.
6 . The camera module of claim 1 , wherein the pulling magnet and the pulling yoke face each other in a second axis direction perpendicular to both the optical axis direction and the first axis direction.
7 . The camera module of claim 1 , wherein a plurality of guide grooves in which the three ball bearings are disposed are formed on a lower surface of the lens barrel,
wherein the lens barrel comprises an extension portion extending in the optical axis direction, and
wherein some of the plurality of guide grooves extend to a lower surface of the extension portion.
8 . The camera module of claim 7 , wherein one of two ball bearings is disposed between the lower surface of the extension portion and the housing.
9 . The camera module of claim 1 , wherein the housing has a through-hole, and
the magnet and the coil face each other directly through the through-hole.
10 . The camera module of claim 1 , wherein one surface of the magnet facing the coil has an N-pole, a neutral region, and an S-pole along the optical axis direction.
11 . The camera module of claim 1 , wherein a position sensor is disposed inside the coil.
12 . The camera module of claim 1 , further comprising a plurality of magnets disposed on the reflection module and a plurality of coils facing the plurality of magnets,
wherein the housing comprises a plurality of through-holes, and
the plurality of magnets and the plurality of coils face each other directly through the plurality of through-holes.
13 . The camera module of claim 12 , wherein one magnet among the plurality of magnets is disposed on a bottom surface of the reflection module, and
two magnets among the plurality of magnets are disposed on one side surface and the other side surface of the reflection module.
14 . The camera module of claim 12 , wherein a position sensor is disposed inside the plurality of coils.
15 . The camera module of claim 12 ,
wherein a main board is disposed on the housing, and
the coil and the plurality of coils are disposed on the main board.
16 . The camera module of claim 1 , wherein a ball bearing is disposed between the reflection module and the housing.
17 . The camera module of claim 1 , wherein an elastic damper is disposed between the reflection module and the lens barrel.