Patent ID: 7167322

Claim:
A beam shaping apparatus, comprising: a source generating a laser beam; and an optical lens, comprising: a first surface oriented toward said source to receive said laser beam, said first surface having an apex and being shaped to conform to a curve defined in a (x,y,z) cartesian coordinate system by the following equation z = cy 2 1 + ( 1 - ( 1 + Q ) ⁢ c 2 ⁢ y 2 where y and z are independent of x, c is the curvature at said apex and Q is the conic constant less than (−1); and a second surface for receiving said laser beam from said first surface, said second surface having a positively cylindrical shape for converging said laser beam transmitted from said first surface and having an axial direction perpendicular to the x direction; wherein the first surface is configured to adjust a length of said laser beam and the second surface is configured to adjust a width of said laser beam.