LENS MODULE
The present disclosure relates to the technical field of optical lenses, and provides a lens module. The lens module includes a lens barrel, a first lens arranged at an object side of the lens barrel, a fixing part for pressing the first lens against the lens barrel from an object side of the first lens, and a sealing ring arranged between the lens barrel and the first lens. The sealing ring includes a top surface directly facing the first lens and a bottom surface directly facing the lens barrel. The top surface is provided with at least two first contacting portions around an optical axis of the first lens, and the at least two first contacting portions abut against the first lens. The lens module provided by the present disclosure has a higher reliability and a good sealing property.
1 . A lens module, comprising:
a lens barrel;
a first lens arranged at an object side of the lens barrel;
a fixing part for pressing the first lens against the lens barrel from an object side of the first lens; and
a sealing ring arranged between the lens barrel and the first lens,
wherein the sealing ring comprises a top surface directly facing the first lens and a bottom surface directly facing the lens barrel, the top surface is provided with at least two first contacting portions around an optical axis of the first lens, and the at least two first contacting portions abut against the first lens.
2 . The lens module as described in claim 1 , wherein each of the at least two first contacting portions comprises two oblique surfaces that extend from the top surface towards the first lens and intersect at an end facing away from the top surface, an angle formed between the two oblique surfaces being an acute angle.
3 . The lens module as described in claim 2 , wherein a rounded angle is formed at an intersection end of the two oblique surfaces.
4 . The lens module as described in claim 3 , wherein a curvature radius of the rounded angle is smaller than or equal to 0.5 mm.
5 . The lens module as described in claim 2 , wherein an intersection line is formed by the two oblique surfaces of each of the at least two first contacting portions, and a distance between any two adjacent intersection lines is greater than or equal to 0.05 mm, and smaller than or equal to 0.8 mm.
6 . The lens module as described in claim 1 , wherein the bottom surface is provided with at least two second contacting portions around the optical axis of the first lens, and the at least two second contacting portions abut against the lens barrel.
7 . The lens module as described in claim 6 , wherein each of the at least two second contacting portions comprises two oblique surfaces that extend from the bottom surface towards the lens barrel and intersect at an end facing away from the bottom surface, an angle formed between the two oblique surfaces is an acute angle.
8 . The lens module as described in claim 7 , wherein a rounded angle is formed at an intersection end of the two oblique surfaces.
9 . The lens module as described in claim 8 , wherein a curvature radius of the rounded angle is smaller than or equal to 0.5 mm.
10 . The lens module as described in claim 7 , wherein an intersection line is formed by the two oblique surfaces of each of the at least two second contacting portions, and a distance between any two adjacent intersection line is greater than or equal to 0.05 mm, and smaller than or equal to 0.8 mm.