Camera module
The present invention relates to a camera module, comprising: a lens barrel including a body part, and an extension part extending outwardly from the body part; a front body including a through hole into which the body part is inserted, and a placing part on the top of which the extension part is disposed; and an adhesive disposed between the extension part and the placing part, wherein a concave-convex part may be formed on the placing part. The present invention has an effect of enhancing adhesive force between the lens barrel and the front body, thereby maintaining airtightness of an inner space and improving reliability and stability.
1. A camera module, the camera module comprising:
a lens barrel comprising a body part, and an extension part extending outwardly from the body part;
a body comprising a through hole into which the body part is inserted, and a placing part facing the extension part; and
an adhesive disposed between the extension part and the placing part,
wherein the placing part comprises a base surface and a concave-convex part disposed on the base surface,
wherein a lower portion of the concave-convex part is disposed below the base surface, and
wherein at least a portion of the extension part facing the concave-convex part is formed with a flat surface.
2. The camera module of claim 1 , wherein the extension part comprises a groove facing the placing part.
3. The camera module of claim 2 , wherein the adhesive is provided in the groove.
4. The camera module of claim 1 , wherein a surface roughness (Ra) of the concave-convex part is greater than 5 μm, but less than 50 μm.
5. The camera module of claim 1 , wherein the adhesive is initially cured in the process of an alignment between an optical axis of a lens part and an image sensor mounted on a substrate part, and finally cured while the alignment between the optical axis of the lens part and the image sensor is realized.
6. The camera module of claim 5 , wherein the initial curing of the adhesive is a UV (Ultraviolet) curing.
7. The camera module of claim 5 , wherein the final curing is a heat curing realized at 75° C.˜90° C.
8. The camera module of claim 1 , wherein the adhesive is of an acrylic epoxy.
9. The camera module of claim 1 , wherein the base surface extends perpendicular to a longitudinal axis of the through hole.
10. The camera module of claim 1 , wherein the base surface extends radially outward from the concave-convex part.
11. The camera module of claim 1 , wherein the base surface extends radially inward from the concave-convex part.
12. The camera module of claim 1 , wherein the base surface comprises:
a first surface located outwardly of the concave-convex part; and
a second surface located inwardly of the concave-convex part.
13. The camera module of claim 12 , wherein the first surface and the second surface are coplanar.
14. The camera module of claim 1 , wherein an upper portion of the concave-convex part is disposed above the base surface.
15. The camera module of claim 1 , wherein at least part of the adhesive is disposed on the concave-convex part.