Camera module autofocus function testing system and method

Abstract

A camera module autofocus function testing system and method, wherein a host computer sends a control signal to a processing module, and the processing module processes the control signal to obtain and output a command signal to a drive chip of a circuit board. The analog unit sends out analog information when there is an output current between the first output end and the second output end of the circuit board, simulating the auto-focus action. The processing module receives and processes the output signal sent by the driver chip, obtains and sends the feedback signal to the host computer, and the host computer controls the display screen to display the test result information according to whether the feedback signal is received, and the circuit board auto-focus can be known according to the test result information Whether the function is qualified. After the circuit board passes the autofocus function test and is determined to be a good product, it is then used in the subsequent camera module assembly process to avoid rework or scrapping of the camera module, reduce production costs, and is easy and fast to operate.

Description

technical field [0001] The invention relates to a camera module detection technology, in particular to a camera module autofocus function testing system and method. Background technique [0002] With the popularization of camera functions of mobile phones, computers and other electronic products, the requirements for camera quality are getting higher and higher, and camera modules with auto-focus functions have effectively improved the camera quality. The camera module with auto-focus function includes lens, voice coil motor (Voice Coil Motor, VCM), sensor, circuit board, etc. The circuit board is equipped with a driver chip, which is connected to the voice coil motor through two ports of the circuit board to control the voice coil The motor works. [0003] The principle of the autofocus function of the camera module is as follows: the sensor receives light from the lens, the driver chip outputs a drive signal according to the intensity of the received light, and controls t...

AI Technical Summary

Problems solved by technology

[0004] The traditional method of testing the autofocus function of the camera module is to test the circuit board after the production and assembly of the camera module is completed. If there are defective products on the circuit board, the camera module will be reworked or scrapped directly.

This test method causes waste of manpower or components, increases production costs, and requires more software and hardware equipment, making the test complicated and difficult to operate

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