Patent ID: 7352403

Claim:
A method for adjusting a relative position of a lens module by using a uniform light source, the lens module including a bottom board, an image sensor, an adjustment module and a lens apparatus, the image sensor being disposed on the bottom board and perpendicular to an optical axis of the uniform light source, the image sensor including a plurality of pixels, the image sensor further including a first area, a second area and a third area, the first area, the second area and the third area including at least one pixel respectively, the lens apparatus being movably disposed in front of the image sensor, the lens apparatus being connected to the bottom board by the adjustment module, the image sensor electrically connecting to a test module, the test module electrically connecting to the adjustment module, the method comprising: respectively receiving a first signal, a second signal and a third signal from the first area, the second area and the third area; the test module processing the first signal, the second signal and the third signal respectively to determine an adjustment quantity; and selectively adjusting the relative position between the image sensor and the lens apparatus through the adjustment module according to the adjustment quantity, wherein the first area, the second area and the third area have a same distance to a geometric center of the image sensor respectively.