A camera module and assembly process thereof

Abstract

The invention provides a camera module and its assembly process, comprising a lens, a mirror base, an image sensor assembly and an anti-loosening screw; the bottom of the lens has external threads; the middle of the lens is provided with a limit ring, and the external threads at the bottom of the lens are Positioning and guiding steps are arranged between the limiting rings; the mirror base includes a lens assembly hole, which is set through the mirror base, and the upper part of the lens assembly hole sinks to form a bearing platform; the bottom of the lens assembly hole forms a ring The boss has an internal thread; there is a positioning guide cylinder between the bearing platform and the annular boss; the anti-loosening screw is used to fix the lens and the mirror holder, as well as the mirror holder and the image sensor assembly, to ensure that the lens and the mirror holder, the mirror The stability of the connection between the seat and the image sensor assembly realizes the coincidence of the optical axis of the lens and the normal line of the image sensor; the assembly of the camera module provided by the present invention is based on the lens seat, which effectively improves the quality of the camera module. Rate.

Description

Technical field [0001] The invention belongs to the technical field of camera modules, relates to an assembly structure of a lens, a lens base and an image sensor assembly, realizes the coincidence of the optical axis of the lens and the normal line of the image sensor, and particularly relates to a camera module and an assembly process thereof. Background technique [0002] Camera modules on the market generally include lens, lens holder and image sensor components. In the process of assembling the camera module, how to combine the above-mentioned components well, and to ensure the requirements of optical performance, and the positional relationship of the mechanical assembly, has always been the research direction of relevant technicians. [0003] The common assembly method is to first attach the image sensor to the circuit board through SMT (Surface Mount Technology), then connect the lens holder and the image sensor assembly through glue, connect the lens and the lens holder th...

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a camera module to solve the problem that there may be a risk of loosening between the lens and the mirror holder and between the mirror holder and the image sensor assembly, so as to facilitate the assembly of the module

[0008] Another object of the present invention is to provide a camera module assembly process to solve the problem of high requirements for the positioning reference position of the optical axis of the lens relative to the mirror base when the mirror base is used as the installation reference

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