Patent ID: 8363318

Claim:
A projecting lens for projecting a light of an image generating device onto a screen, wherein the image generating device has a light valve, and the projecting lens comprises: a first lens group having an imaging optical axis and a first effective refractive power; and a second lens group having a second effective refractive power, wherein the second lens group is disposed between the first lens group and the light valve; wherein the light projected from the light valve to the second lens group generates an intermediate image, which is focused on the screen via the first lens group to form an image; wherein the image optical axis of the first lens group has two sides, and a center of the image and a center of the light valve are located on the same side of the imaging optical axis of the first lens group, and a center of the intermediate image is located on the other side of the imaging optical axis of the first lens group; wherein the first effective refractive power is a first positive effective refractive power, and the second effective refractive power is a second positive effective refractive power; wherein the first lens group is a wide-angle lens set, and a projecting view angle of the wide-angle lens set is at least 120 degrees.