Reflective module and camera module including reflective module
A camera module includes a first lens module including one or more lenses disposed along a first optical axis; and a reflective module into which light emitted from the first lens module is incident, wherein the reflective module includes a housing having an internal space; a rotatable holder supported in the housing in a first direction parallel to the first optical axis, and configured to be rotatable relative to the housing; a reflective holder supported in the rotatable holder in a second direction different from the first direction, and configured to be rotatable relative to the rotatable holder; a reflective member disposed on the reflective holder; and a first ball member forming a rotation axis of the rotatable holder, and an imaginary line extending along the first optical axis passes through the first ball member.
1 . A camera module comprising:
a first lens module comprising one or more lenses disposed along a first optical axis; and
a reflective module into which light emitted from the first lens module is incident along the first optical axis, the reflective module comprising:
a housing having an internal space;
a rotatable holder supported in the housing in a first direction parallel to the first optical axis, and configured to be rotatable relative to the housing;
a reflective holder supported in the rotatable holder in a second direction different from the first direction, and configured to be rotatable relative to the rotatable holder;
a reflective member disposed on the reflective holder and configured to reflect the light incident along the first optical axis to a second optical axis parallel to the second direction;
a first ball member forming a rotation axis of the rotatable holder and through which an imaginary line extending along the first optical axis passes;
a driving magnet and a driving coil configured to rotate the reflective holder; and
a pair of magnetic bodies configured to provide a magnetic force to support the reflective holder in the rotatable holder,
wherein the driving magnet and the driving coil face each other in a direction parallel to the second direction in which the reflective holder is supported in the rotatable holder,
the pair of magnetic bodies comprises a single first magnetic body separate from the driving magnet and disposed on the reflective holder, and a single second magnetic body separate from the driving magnet and disposed on the rotatable holder,
the single first magnetic body and the single second magnetic body face each other in the second direction, and
an imaginary line extending along the second optical axis passes through the single second magnetic body.
2 . The camera module of claim 1 , further comprising a plurality of second ball members disposed between the reflective holder and the rotatable holder and forming a rotation axis of the reflective holder.
3 . The camera module of claim 2 , further comprising a plurality of accommodation grooves formed in either one or both of the reflective holder and the rotatable holder,
wherein the plurality of second ball members are respectively disposed in the plurality of accommodation grooves in the second direction.
4 . The camera module of claim 2 , wherein the rotation axis of the reflective holder passes through the plurality of second ball members, and
the reflective member is disposed between the plurality of second ball members.
5 . The camera module of claim 1 , wherein the driving magnet is disposed on the reflective holder and the driving coil is disposed on the housing, or the driving magnet is disposed on the housing and the driving coil is disposed on the reflective holder.
6 . The camera module of claim 5 , wherein the reflective holder comprises an extension disposed between the rotatable holder and the housing,
the driving coil is disposed on the housing, and
the driving magnet is disposed on the extension facing the driving coil in the second direction.
7 . The camera module of claim 6 , further comprising a position sensor disposed on the housing and facing the driving magnet in the second direction.
8 . The camera module of claim 7 , wherein the driving magnet is configured so that a surface of the driving magnet facing the driving coil has an N pole, a neutral region, and an S pole arranged in the first direction, and
the position sensor faces the neutral region.
9 . The camera module of claim 1 , wherein the single second magnetic body is disposed between the driving magnet and the single first magnetic body.
10 . The camera module of claim 1 , further comprising:
a driving magnet and a driving coil configured to rotate the rotatable holder; and
a magnetic body configured to provide a magnetic force by interacting with the driving magnet configured to rotate the rotatable holder to support the rotatable holder in the housing,
wherein the magnetic body and the driving magnet configured to rotate the rotatable holder face each other in the first direction with the driving coil configured to rotate the rotatable holder being interposed therebetween.
11 . The camera module of claim 10 , further comprising a position sensor facing the driving magnet configured to rotate the rotatable holder in the first direction.
12 . The camera module of claim 10 , further comprising an accommodation groove formed in either one or both of the housing and the rotatable holder and supporting the first ball member at three or more points.
13 . The camera module of claim 10 , further comprising a plurality of guide ball members configured to guide a rotation of the rotatable holder,
wherein the plurality of guide ball members are configured to be movable relative to the first ball member in a direction perpendicular to the first direction.
14 . The camera module of claim 1 , further comprising a damper disposed on the reflective holder and protruding toward the first lens module.
15 . The camera module of claim 1 , further comprising a second lens module into which the light reflected from the reflective member is incident, the second lens module comprising one or more lenses disposed along the second optical axis.
16 . The camera module of claim 1 , wherein the driving magnet is a flat magnet.
17 . A camera module comprising:
a first lens module having a first optical axis and a second lens module having a second optical axis different from the first optical axis; and
a reflective module comprising:
a housing having an internal space;
a rotatable holder disposed in the internal space of the housing and configured to be rotatable about a first rotation axis;
a reflective holder configured to be rotatable relative to the rotatable holder about a second rotation axis perpendicular to the first rotation axis;
a reflective member disposed on the reflective holder and configured to reflect light received along the first optical axis to the second optical axis;
a driving unit comprising a driving magnet and a driving coil facing each other in a direction parallel to the second optical axis and configured to rotate the reflective holder, and
a pair of magnetic bodies configured to provide a magnetic force to support the reflective holder in the rotatable holder,
wherein the reflective holder is supported in the rotatable holder in a direction parallel to the second optical axis,
the pair of magnetic bodies comprises a single first magnetic body separate from the driving magnet and disposed on the reflective holder, and a single second magnetic body separate from the driving magnet and disposed on the rotatable holder,
the single first magnetic body and the single second magnetic body face each other in a direction parallel to the second optical axis, and
an imaginary line extending along the second optical axis passes through the single second magnetic body.
18 . The camera module of claim 17 , wherein the rotatable holder is supported in the housing in a first direction parallel to the first rotation axis by a first magnetic force, and
the reflective holder is supported in the rotatable holder in a second direction perpendicular to the first direction by a second magnetic force.
19 . The camera module of claim 18 , wherein the camera module further comprises:
a first driving magnet disposed on the rotatable holder; and
a first pulling yoke disposed on the housing, and
the first magnetic force is generated by the first driving magnet and the first pulling yoke.
20 . The camera module of claim 18 , wherein the single first magnetic body and the single second magnetic body are configured to generate the second magnetic force and rotate together with the rotatable holder as the rotatable holder rotates.
21 . The camera module of claim 17 , wherein the single first magnetic body is disposed between the driving magnet and the single second magnetic body.
22 . The camera module of claim 17 , wherein the single first magnetic body is a pulling magnet, and the single second magnetic body is a second pulling yoke.
23 . The camera module of claim 17 , wherein the driving magnet is a flat magnet.
24 . A reflective module comprising:
a rotatable holder configured to be rotatable about a first axis;
a reflective holder coupled to the rotatable holder and configured to be rotatable about a second axis perpendicular to the first axis;
a reflective member coupled to the reflective holder;
a driving magnet disposed on the reflective holder;
a driving coil configured to interact with the driving magnet;
a single first magnetic body separate from the driving magnet and disposed on the reflective holder; and
a single second magnetic body separate from the driving magnet and disposed on the rotatable holder;
wherein the driving magnet and the driving coil face each other in a direction parallel to a third axis perpendicular to both the first axis and the second axis,
the single first magnetic body and the single second magnetic body face each other in a direction parallel to the third axis,
the reflective member is configured to reflect light received along a first optical axis parallel to the first axis to a second optical axis parallel to the third axis, and
an imaginary line extending along the second optical axis passes through the single second magnetic body.
25 . The reflective module of claim 24 , wherein the single first magnetic body is disposed between the second axis and the single second magnetic body.
26 . The reflective module of claim 24 , further comprising a position sensor configured to detect a movement of the driving magnet.
27 . The reflective module of claim 26 , wherein the single first magnetic body, the single second magnetic body, the driving magnet, and the position sensor are sequentially disposed in a direction parallel to the third axis.
28 . The reflective module of claim 26 , further comprising a housing having an internal space and an opening in the housing exposing the internal space,
wherein the rotatable holder is disposed in the housing; and
the driving coil and the position sensor are exposed to the internal space of the housing through the opening in the housing.
29 . The reflective module of claim 24 , further comprising a ball member through which the second axis passes,
wherein the ball member is disposed between a first accommodation groove formed in the rotatable holder and a second accommodation groove formed in the reflective holder, and
the first accommodation groove and the second accommodation groove face each other in a direction parallel to the third axis.
30 . A camera module comprising:
the reflective module of claim 24 ;
a first lens module having the first optical axis; and
a second lens module having the second optical axis.
31 . The reflective module of claim 24 , wherein the driving magnet is a flat magnet.