Lens module
A lens module is disclosed. The lens module includes a lens barrel having a first bonding face; a first lens; and a fixing component installed inside the lens barrel and including a second bonding face. At least one the first bonding face and the second bonding face is configured to be lumpy, and the first bonding face and the second bonding face are bonded by glue. The first bonding face, the second bonding face and the glue form a bonding structure.
1. A lens module including:
a lens barrel having a first bonding face;
a first lens including an optical portion and a non-optical portion surrounding the optical portion;
a ring-shaped fixing component installed inside the lens barrel and abutting against the non-optical portion for fixing the first lens in the lens barrel, an outer side surface of the fixing component including an attaching portion fitting with the lens barrel and a second bonding face corresponding to and spaced apart from the first bonding face, the attaching portion proximal to an object side of the lens module compared to the second bonding face, the fixing component providing an optical hole for exposing the optical portion of the first lens; wherein
both the first bonding face and the second bonding face are configured to be lumpy, and the first bonding face and the second bonding face are bonded by glue, and the first bonding face, the second bonding face and the glue form a bonding structure;
the lens barrel comprises a first barrel wall having an optical aperture and a second barrel wall extending from the first barrel wall, and the first bonding face formed on the second barrel wall,
the first bonding face including a plurality of first lugs and first grooves arranged alternately, the second bonding face including a plurality of second lugs and second grooves arranged alternately, the first grooves and the second grooves filled with the glue, and
the projection length of the second bonding face on the second barrel wall is approximately two-thirds of the projection length of the entire fixing component on the second barrel wall.
2. The lens module as described in claim 1 , wherein the first lug, the first groove, the second lug, and second groove are parallelogram, the sum of the side length of the first lug perpendicular to the optical axis and the side length of the first groove perpendicular to the optical axis is equal to the sum of the side length of the second lug perpendicular to the optical axis and the side length of the second groove perpendicular to the optical axis.
3. The lens module as described in claim 2 , wherein the outer side surface of the fixing component is provided with a first bevel face, the second bonding face serves as the first bevel face.
4. The lens module as described in claim 3 , wherein an angle between the first bevel face and the optical axis is θ1 and meets the following condition 0°≤θ 1≤80°.
5. The lens module as described in claim 4 , wherein the second lug is a parallelogram formed by a pair of sides perpendicular to the optical axis and a pair of sides not perpendicular to the optical axis, and an angle formed by the side not perpendicular to the optical axis and a line parallel to the optical axis is θ 2, meeting 0°≤θ 2≤80°.
6. The lens module as described in claim 1 , wherein the first grooves and the first lugs are evenly distributed on the first bonding surface in circumferential direction.
7. The lens module as described in claim 1 , wherein the second grooves and the second lugs are evenly distributed on the second bonding surface in circumferential direction.