Patent ID: 7978419

Claim:
A scan lens for an imaging device comprising: a first lens element having an optical power in an in-scan direction of the imaging device and an optical power in a cross-scan direction of the imaging device, the optical power in the cross-scan direction being positive and greater than the optical power in the in-scan direction; a second lens element having a negative optical power in the in-scan direction and in the cross-scan direction; a third lens element having a positive optical power in the in-scan direction and in the cross-scan direction; and, a fourth lens element having an optical power in the in-scan direction and a positive optical power in the cross-scan direction, the optical power in the cross-scan direction being greater than the optical power in the in-scan direction, wherein, upon installation of the scan lens within the imaging device, the first, second, third, and fourth lens elements are optically positioned in ascending numeric order between a scanning component of the imaging device and an imaging surface of the imaging device.