Patent ID: 8373932
Filing Date: 2013-02-12
Classification: G02B

Abstract:
1. An auto-focusing lens module, to focus an object image onto an image sensor, the auto-focusing lens module comprising: a front lens; a liquid zooming unit adapted with the front lens to condense the object image in front into a first-stage output light, wherein a zoom quantity of the liquid zooming unit is determined by an external control; and an image lens group adapted to output a second-stage output light after receiving the first-stage output light, the image lens group comprising: wherein no optical element with non-zero optical power is disposed between the image lens group and the image sensor, wherein an absolute sag of the convex curving surface of the first lens is larger than an absolute sag of the concave curving surface, and both the convex curving surface and the concave curving surface are sagging toward the the front lens.