Patent ID: 7587803

Claim:
Method for assembling a camera module comprising a substrate, a lens and an image sensor chip having a light-sensitive surface, wherein in an assembled state an optical axis of the lens extends in a z-direction and the light-sensitive surface of the image sensor chip extends at a pre-determined sensor surface position perpendicular to the z-direction, the method comprising the following steps: a) aligning a detector of a measuring device with the optical axis of the lens; b) displacing the lens in the z-direction; c) determining an optimal z-position for the lens on the basis of measuring signals from the measuring device, wherein measuring is performed at a measuring position; d) bringing the lens to the optimal z-position, and fixing the lens with respect to the substrate; e) removing the measuring device; and f) attaching the image sensor chip to the substrate, wherein the measuring device is removed before the image sensor chip is attached to the substrate, so as to align the light-sensitive surface of the image sensor chip with the optical axis of the lens.