Camera lens module
A camera lens module is provided, in which a lens housing has at least one lens, a main frame contains the lens housing along an optical axis, a support portion is engaged with the lens housing and with the main frame to be rotatable along the optical axis, a cover is engaged with the main frame, for keeping the lens housing contained in the main frame, and a control member is engaged with the cover, for moving the support portion along the optical axis.
1. A camera lens module comprising:
a lens housing having at least one lens;
a main frame for containing the lens housing along an optical axis;
a support portion engaged with the lens housing and the main frame to be movable along the optical axis;
a cover engaged with the main frame, for retaining the lens housing within the main frame; and
a control member engaged through the cover and with the support member for moving the support portion along the optical axis, wherein the control member is screw-engaged with a through hole in the cover and makes a linear movement together with the support portion along the optical axis over the main frame, simultaneously with rotating on the cover.
2. The camera lens module of claim 1 , further comprising an elastic member installed on the main frame, for providing an elastic force to move the support portion toward the cover.
3. The camera lens module of claim 2 , wherein the support portion has one end supported by the control member and the other end supported by the elastic member, whereby said support portion is kept stationary at a predetermined position in the main frame.
4. The camera lens module of claim 2 , wherein the elastic member is selected from one of poron and a plate spring.
5. The camera lens module of claim 1 , further comprising:
assembly protrusions protruding from an inner surface of the main frame to face each other; and
assembly grooves formed on both side surfaces of the support portion, in correspondence with the assembly protrusions,
wherein the assembly protrusions combine the main frame with the support portion and guide movement of the support portion by being inserted into the assembly grooves.
6. The camera lens module of claim 1 , wherein the cover includes an opening formed along the optical axis in a state where the cover is engaged with the main frame, and the through hole is formed near the opening, facing the support portion.
7. The camera lens module of claim 6 , wherein the control member supports the support portion, while the control member is engaged with the cover, extending through the through hole.
8. The camera lens module of claim 6 , wherein the control member rotatably extends through the through hole and is screw-engaged with the support portion.
9. The camera lens module of claim 8 , wherein the control member moves the support portion linearly along the optical axis over the main frame in response to rotation of the cover.
10. The camera lens module of claim 1 , further comprising:
an image sensor installed on the main frame, facing the lens housing, wherein the control member controls a distance between the lens housing and the image sensor by moving the support portion together with the lens housing along the optical axis.
11. The camera lens module of claim 1 , further comprising:
an actuator included in the support portion, for receiving power from the main frame; and
a magnetic body engaged with the lens housing, for generating a driving force through interaction with the actuator,
wherein the lens housing moves along the optical axis by receiving the driving force generated through interaction between the actuator and the magnetic body, thereby controlling a focal length when an object is captured.
12. The camera lens module of claim 11 ,wherein the actuator is an eletromagnet and the magnetic body is a permanent magnet.
13. The camera lens module of claim 1 , further comprising:
first support members formed in one of the lens housing and the support portion;
a guide rod having one end fixed to a first support member and the other end fixed to another first support member; and
second support members formed in the other of the lens housing and the support portion,
wherein the guide rod is extended through the second support members to be movable along an optical axis.
14. The camera lens module of claim 13 , further comprising a second elastic member between the cover and the lens housing, for providing a force to move the lens housing along the optical axis with respect to the support portion.
15. The camera lens module of claim 14 , further comprising an image sensor installed in the main frame to face the lens housing, wherein the second elastic member provides a force to move the lens housing toward the image sensor.
16. The camera lens module of claim 15 , wherein a movement range of the lens housing with the support portion is restricted as the first support members and the second support members interact each other.
17. The camera lens module of claim 14 , wherein the second elastic member is one of a coil spring and a plate spring.