Lens module

Abstract

A lens module includes a lens barrel and two lenses. The lens barrel has two opposite end surfaces, and the lens barrel defines a receiving hole passing through the two end surfaces, and the receiving hole has a central axis. An annular protrusion protrudes from the inner wall of the lens barrel. The annular protrusion is coaxial with the receiving hole. The annular protrusion has two contact surfaces, and the two contact surfaces are respectively adjacent to the two end surfaces. The two end surfaces are both frusto-conical, and the radii of their cross-sections gradually decrease along the direction away from the corresponding end surfaces. The two lenses respectively have an optical axis and a fixed part, each of which has a contact surface, and the contact surface of the lens has a truncated conical shape that matches the contact surface of the ring-shaped protrusion and is compatible with the light of the corresponding lens. Axis coaxial. The contact surfaces of the two lenses are respectively in close contact with the two contact surfaces of the annular protrusion.

Description

technical field [0001] The invention relates to a lens module. Background technique [0002] In recent years, with the development of multimedia technology, the scope of application of lens modules has become wider and wider, such as being applied to electronic products such as digital cameras, video cameras, and mobile phones with camera functions. [0003] While people pursue the miniaturization of digital cameras, video cameras and mobile phones with camera functions, they also put forward higher requirements for the image quality of the objects they shoot, that is, they hope that the images of the objects they shoot are clear. The imaging quality of an object largely depends on whether the optical axes of the lenses in the lens module are aligned during the assembly process. [0004] Such as figure 1 As shown, a lens module 10 in the prior art includes a lens barrel 12 , and a first lens 14 , a spacer ring 18 and a second lens 16 sequentially disposed in the lens barre...

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