Patent ID: 7926159

Claim:
A system for assembling a camera module, the camera module having a lens module and an image sensor module, the lens module having an optical axis associated therewith, the image sensor module including a base and an image sensor mounted on the base, the system comprising: a worktable with a coordinate system defined thereon, the worktable being configured for providing placement of the image sensor module thereon, thus a center of the image sensor of the image sensor module having a coordinate value thereof; a light intensity sensor arranged on the worktable; a lens module holding device configured for holding and moving the lens module in a manner that the lens module is arranged above the light intensity sensor with the optical axis associated with the lens module perpendicular to a main plane of the worktable, the lens module holding device having a parallel light source configured for emitting parallel lights toward the lens module, the parallel lights being parallel to the optical axis of the lens module, the parallel lights converging at a focus point on the light intensity sensor, wherein the light intensity sensor is configured for detecting the focus point location and generating a signal associated with a coordinate value of the focus point; and a controlling unit configured for receiving the signal from the light intensity sensor and controlling the lens module holding device to move the lens module toward the image sensor module such that the optical axis of the lens module is aligned with the center of the image sensor based upon a coordinate relationship between the coordinate values of the focus point and the center of the image sensor.