Patent ID: 8614763

Claim:
An auto-focusing camera module, comprising: a lens module for capturing light signal of an object; an image sensor aligned with the lens module for sensing the light signal captured by the lens module and forming an image; a color separation unit electrically connected to the image sensor for separating the image into red image, green image and blue image; a controller electrically connected to the color separation unit, the controller being configured for calculating MTF values of the image and determining a shooting distance between the lens module and the object; and a shape memory alloy driver electrically connected to the controller; wherein, when the shooting distance is greater than a predetermined distance value, the controller processes the image according to the MTF values to compensate blurs of the image caused by out of focus; when the shooting distance is equal to or less than the predetermined distance value, the controller controls the shape memory alloy to drive the lens module to an optimum focusing position for focus according to the MTF values.