Lens module and image apparatus

摘要

A lens module for capturing an object light-beam from an object-side is provided. The lens module includes a first lens group, a second lens group, a third lens group, a fourth lens group and a fifth lens group sequentially-arranged from the object-side to an image-side. The five lens groups respectively have at least one lens with positive refractive-power and at least one lens with negative refractive-power. The first, third and fifth lens groups are fixed groups, while the second and fourth lens groups are movable groups. An image apparatus including the lens module is also provided.

主权项

1. A lens module, having an object-side and an image-side for capturing an object light-beam from the object-side, the lens module disposed on a transmission path of the object light-beam and comprising five lens groups sequentially-arranged from the object-side to the image-side:
a first lens group with positive refractive-power, wherein the first lens group comprises a first lens with positive refractive-power and a second lens with negative refractive-power; a second lens group with negative refractive-power, wherein the second lens group comprises a third lens with positive refractive-power and a fourth lens with negative refractive-power; a third lens group with positive refractive-power, wherein the third lens group comprises a fifth lens with positive refractive-power, a sixth lens with negative refractive-power, and a thirteenth lens with negative refractive-power located between the fifth lens and the second lens group, wherein the fifth lens, the sixth lens and the thirteenth lens form a cemented lens; a fourth lens group with positive refractive-power, wherein the fourth lens group comprises a seventh lens with positive refractive-power and an eighth lens with negative refractive-power; and a fifth lens group with positive refractive-power, wherein the fifth lens group comprises a ninth lens with positive refractive-power and a tenth lens with negative refractive-power, wherein the first lens group, the third lens group and the fifth lens group are fixed groups, the second lens group and the fourth lens group are movable groups and each lens in the third lens group is a spherical lens.