Patent ID: 7046458

Claim:
A fisheye lens comprising two lens groups, arranged in order from the object side, as follows: a first lens group having negative refractive power; and a second lens group having positive refractive power; wherein the fisheye lens has a field angle of at least one hundred sixty degrees; said first lens group includes, arranged in order from the object side, two lens elements, each having negative refractive power and a meniscus shape with the convex surface on the object side, a lens element having negative refractive power with a concave surface on the image side, and two lens elements, one having positive refractive power and one having negative refractive power; said second lens group includes, arranged in order from the object side, two lens elements, one having positive refractive power and one having negative refractive power, a stop, and two lens elements, one having positive refractive power and one having negative refractive power; and the on-axis distance between the image-side surface of said first lens group and the object-side surface of said second lens group is greater than the on-axis distance between any other adjacent surfaces of any of the lens elements of the fisheye lens.