Patent ID: 8643726

Claim:
A test system for testing a camera module, the camera module comprising a voice coil motor and a lens received in the voice coil motor, the voice coil motor being capable of driving the lens move among a number of scan positions for focusing, and the lens be capable of moving from an initial position to a focusing position of the scan positions in a response time; the test system comprising: a first focus activating unit configured for controlling the voice coil motor to drive the lens to move from the initial position to the focusing position for achieving a first time focus and obtaining a control signal when the lens is at the focusing position of the first time focusing; a second focus activating unit configured for controlling the voice coil motor to drive the lens to replace to the initial position and then move the lens from the initial position to the focusing position again for achieving a second time focus according to the control signal; and a timing unit configured for recording a first moment when the lens is replaced to the initial position and a second moment when the lens is at the focusing position again of the second time focus.