Patent ID: 7400457

Claim:
A beam shaping system for providing a shaped beam substantially rectangular and having a controlled intensity profile in a far field region, from an incident beam having a predetermined intensity profile along a first and a second axis, said beam shaping system comprising: a first and a second acylindrical lens each having a primary acylindrical surface with a base curve, said first and said second acylindrical lenses being disposed substantially orthogonally to one another, said first acylindrical lens for shaping said incident beam along said first axis and said second acylindrical lens for shaping said incident beam along said second axis, thereby providing said substantially rectangular shaped beam; wherein said base curve of said first lens fits a first equation in a Cartesian coordinate system (x,y), said first equation being y = c 1 ⁢ x 2 1 + ( 1 - ( 1 + Q 1 ) ⁢ c 1 2 ⁢ x 2 ) 1 ⁢ / ⁢ 2 + f 1 ⁡ ( x ) , c 1 being a first curvature constant, Q 1 being a first conic constant and ƒ 1 (x) being a first correction function, said first correction function being continuous; and wherein said base curve of said second lens fits a second equation in another Cartesian coordinate system (x,y), said second equation being y = c 2 ⁢ x 2 1 + ( 1 - ( 1 + Q 2 ) ⁢ c 2 2 ⁢ x 2 ) 1 ⁢ / ⁢ 2 + f 2 ⁡ ( x ) , c 2 being a second curvature constant and Q 2 being a second conic constant and ƒ 2 (x) being a second correction function, said second correction function being continuous.