Quality detection method and device for fixed-focus camera module and computer storage medium

Abstract

The invention provides a quality detection method and device for a fixed-focus camera module, and a computer storage medium, and the method comprises the steps: obtaining M test images obtained by thefixed-focus camera module through photographing test graphic cards at different object distances, and determining the imaging quality parameters of N test areas in each test image; drawing N defocusing curves corresponding to each test area based on the imaging quality parameters of the N test areas in each test image in the M test images, the abscissa of each defocusing curve being the object distance during shooting and the ordinate of each defocusing curve being the imaging quality parameter of the corresponding area; determining the inclination of the lens of the fixed-focus camera modulebased on the N-1 defocusing curves corresponding to the N-1 peripheral areas and the conversion relationship between the object distance and the distance; determining the field curvature of the lensof the fixed-focus camera module based on the N defocusing curves and the conversion relationship between the object distance and the distance; and detecting the quality of the fixed-focus camera module based on the inclination and the field curvature.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a quality inspection method, device and computer storage medium of a fixed-focus camera module. Background technique [0002] A fixed-focus camera module with integrated lens and base produced by AA (Active Alignment) technology, in the production process, affected by manufacturing, assembly technology or process, the lens and image chip in the camera module There is often a non-parallel situation between them. When such a camera module is working, there will be a defocus phenomenon, resulting in blurred images and poor image quality. Therefore, it is necessary to carry out effective quality inspection on the quality of the camera module of this model before leaving the factory. Contents of the invention [0003] Embodiments of the present invention provide a quality detection method, device and computer storage medium for a fixed-focus camera module, which are used to eff...

AI Technical Summary

Problems solved by technology

[0002] A fixed-focus camera module with integrated lens and base produced by AA (Active Alignment) technology, in the production process, affected by manufacturing, assembly technology or process, the lens and image chip in the camera module There are often non-parallel situations between them. When such a camera module is working, it will appear out of focus, resulting in blurred images and poor image quality.

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