Patent ID: 7736029

Claim:
A lens array, comprising: a first lens group having a plurality of rows of first lenses, wherein each of the first lenses has a first optical curved surface and each of the first lenses extends along a first axis; a second lens group having a plurality of rows of second lenses, wherein each of the second lenses has a second optical curved surface and each of the second lenses extends along the first axis, the second lenses being disposed at two sides of the first lens group along a second axis perpendicular to the first axis, an optical axis of each of the second optical curved surfaces being perpendicular to the first axis and the second axis, an optical axis of each of the first optical curved surfaces being perpendicular to the first axis and having an included angle larger than 0 degree and smaller than 6 degrees with the optical axis of each of the second optical curved surfaces; and a reference plane being perpendicular to the second axis and passing through the first lens group so that the first lens group and the second lens group are symmetrically disposed with the reference plane, a normal vector of each of the first optical curved surfaces on the optical axis pointing away from the reference plane.