Lens module

Abstract

The invention provides a lens module, comprising a lens and a voice coil motor connected with the lens; wherein the voice coil motor comprises an outer frame, a lens bracket arranged inside the outer frame, a coil sheathed on the lens bracket and at least one permanent magnet fixed on the outer frame; the lens is connected with the lens bracket; the outer frame is provided with at least one storage tank which has a bottom surface and a plurality of lateral surfaces adjacent to the bottom surface and used for containing the permanent magnet; the permanent magnet has a bottom surface and a plurality of lateral surfaces adjacent to the bottom surface; the bottom surface of the permanent magnet contacts the bottom surface of the storage tank; the plurality of lateral surfaces of the permanent magnet are arranged opposite to the plurality of lateral surfaces of the storage tank with clearance; and the outer frame is provided with a plurality of glue dispensing holes which are communicated with the storage tank and the clearance between the lateral surfaces of the permanent magnet and the lateral surfaces of the storage tank.

Description

technical field [0001] The invention relates to a lens module, in particular to a lens module using a voice coil motor for focusing. 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. While the image quality of digital cameras, video cameras and mobile phones with camera functions has been continuously improved, their structures are becoming more and more thinner and smaller. In an article titled "Two-phase Direct-drive MotorBuilt Into A Camcorders Zoom Lens Barrel" published in Consumer Electronics in February 1995, Takano revealed a miniaturized lens module. [0003] A lens module generally includes a lens, a voice coil motor, and an image sensor. The voice coil motor includes a lens holder, a coil, an outer frame and a permanent magnet....

AI Technical Summary

Problems solved by technology

However, with the miniaturization of the lens module, the gap between the outer wall of the permanent magnet and the inner wall of the housing groove of the outer frame is getting smaller and smaller, and it is difficult for the dispensing needle of the dispensing device to be inserted into the outer wall of the permanent magnet and the inner wall of the outer frame. Glue is dispensed in the gap between the inner walls of the holding tank, so it is easy to cause glue overflow on the outer frame or the surface of the permanent magnet

In addition, the contact area between the colloid and the outer frame is small, which may easily cause insufficient bonding strength between the permanent magnet and the outer frame, and reduce the assembly yield

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