Patent ID: 7843653

Claim:
An optical system for providing a polychromatic divergent light beam with a substantially uniform profile along a first axis said polychromatic divergent light having multiple wavelength components with a dispersion of divergence, the system comprising: a collimation optic receiving said polychromatic divergent light and for collimating said polychromatic divergent light to provide a substantially collimated beam, said collimation optic providing a first chromatic focal shift; a shaping lens having a primary surface with a curve adapted for shaping said collimated beam into a shaped beam with a nearly uniform profile along said first axis, said dispersion of divergence causing a deviation from uniformity of said nearly uniform profile for at least part of said multiple wavelength components; and a focusing optic positioned for focusing said shaped beam, said focusing optic providing a second chromatic focal shift; wherein a combination of said first chromatic focal shift and said second chromatic focal shift compensates for said dispersion of divergence, so as to reduce said deviation from uniformity to obtain a profile with a substantially uniform intensity along said first axis, for all of said multiple wavelength components.