Camera actuator and camera module including the same
The embodiment relates to a camera actuator and a camera module including the same. The camera actuator according to the embodiment includes a base, a lens housing disposed on the base, a guide pin disposed on the base, a ball disposed between the guide pin and the lens housing, and a first yoke disposed on the lens housing, a magnet coupled to an inside of the first yoke, and a coil unit facing the magnet surrounding a part of the first yoke and fixed to the magnet. The embodiment may include a second yoke disposed under the first yoke to form a closed loop together with the first yoke.
1. A camera actuator comprising:
a base;
a lens housing disposed on the base and configured to move in an optical axis direction;
a guide pin disposed on the base and extended along the optical axis direction;
a ball disposed between the guide pin and the lens housing;
a magnet disposed on a first surface of the lens housing; and
a coil unit facing the magnet in a first direction perpendicular to the optical axis direction;
wherein the guide pin comprises a first guide pin and a second guide pin separated from each other in a second direction perpendicular to the optical axis direction and the first direction,
wherein the base comprises a base body, and first and second support parts disposed on the base body, and
wherein the ball comprises: a first ball disposed between the guide pin and the lens housing; and a second ball disposed between a support plate within the lens housing and a guide plate on the second support part.
2. The camera actuator according to claim 1 , wherein the lens housing comprises a first receiving portion on a bottom surface thereof.
3. The camera actuator according to claim 2 , wherein the first ball is disposed on the first receiving portion.
4. The camera actuator according to claim 1 , wherein the first ball is in contact with a side surface of each of the first guide pin and the second guide pin.
5. The camera actuator according to claim 2 , wherein the first guide pin and the second guide pin are disposed on the first support part.
6. The camera actuator according to claim 5 , wherein the first ball is disposed on the first receiving portion, and the first ball is in contact with a side surface of each of the first guide pin and the second guide pin.
7. The camera actuator according to claim 1 , comprising:
a first yoke disposed in the lens housing;
a second yoke disposed under the first yoke to form a closed loop together with the first yoke,
wherein the magnet is coupled to an inside of the first yoke; and
wherein the coil unit is configured to face the magnet and to surround a part of the first yoke, and is fixed to the magnet.
8. The camera actuator according to claim 7 , wherein a first length of the second yoke in the optical axis direction is greater than or equal to a second length of the magnet in the optical axis direction.
9. A camera actuator comprising:
a base including at least one support part;
a lens housing disposed on the base and configured to move in an optical axis direction;
at least one guide pin disposed on the base and extended along the optical axis direction;
at least one ball disposed between the base and the lens housing;
a magnet disposed on a first surface of the lens housing; and
a coil unit facing the magnet in a first direction perpendicular to the optical axis direction;
wherein the base comprises a base body, and first and second support parts disposed on the base body, and
wherein the least one ball comprises: a first ball disposed between the guide pin and the lens housing; and a second ball disposed between a support plate within the lens housing and a guide plate on the second support part.
10. The camera actuator according to claim 9 , wherein the least one guide pin comprises a first guide pin and a second guide pin separated from each other in a second direction perpendicular to the optical direction and the first direction.
11. The camera actuator according to claim 9 , wherein the lens housing comprises a first receiving portion on a bottom surface thereof, wherein the first ball is disposed on the first receiving portion.
12. The camera actuator according to claim 9 , wherein the first ball is in contact with a side surface of each of the first guide pin and the second guide pin.
13. The camera actuator according to claim 9 , wherein the first guide pin and the second guide pin are disposed on the first support part.
14. The camera actuator according to claim 13 , wherein the first ball is disposed on the first receiving portion, and the first ball is in contact with a side surface of each of the first guide pin and the second guide pin.
15. The camera actuator according to claim 9 , comprising:
a first yoke disposed in the lens housing;
a second yoke disposed under the first yoke to form a closed loop together with the first yoke,
wherein the magnet is coupled to an inside of the first yoke; and
wherein the coil unit is configured to face the magnet and to surround a part of the first yoke, and is fixed to the magnet.
16. The camera actuator according to claim 15 , wherein a first length of the second yoke in the optical axis direction is greater than or equal to a second length of the magnet in the optical axis direction.