An illumination system, comprising: an arched lens having a curved profile that arches about a vertical center-line axis to yield a hollow cylindrical profile, wherein the arched lens is at least one of diffractive or refractive; and an illumination source device disposed at or near a focus of the curved profile of the arched lens, comprising: a light source radiating along the center-line axis towards a cylindrical negative lens, the cylindrical negative lens that expands the light from the light source in sagittal planes, each formed by a locus of rays incident on a vertical line on an interior surface of the arched lens, an optical diffuser that scatters and homogenizes the light in the tangential plane defined by loci of optical axes of the cylindrical profile and thereby perpendicular to the sagittal planes, and a set of planar mirrors that fold the light at 90 degrees and direct it to the interior surface of the arched lens, wherein the arched lens collimates the light in the sagittal planes and facilitates unperturbed propagation of the collimated beam in the tangential plane, and wherein the illumination source slews along the center-line axis, and the output beam comprises a conic shape having a tilt angle relative to the tangential plane that is dynamically modulated proportionally to an amplitude at which the illumination source is slewed. an arched lens having a curved profile that arches about a vertical center-line axis to yield a hollow cylindrical profile, wherein the arched lens is at least one of diffractive or refractive; and an illumination source device disposed at or near a focus of the curved profile of the arched lens, comprising: a light source radiating along the center-line axis towards a cylindrical negative lens, the cylindrical negative lens that expands the light from the light source in sagittal planes, each formed by a locus of rays incident on a vertical line on an interior surface of the arched lens, an optical diffuser that scatters and homogenizes the light in the tangential plane defined by loci of optical axes of the cylindrical profile and thereby perpendicular to the sagittal planes, and a set of planar mirrors that fold the light at 90 degrees and direct it to the interior surface of the arched lens, a light source radiating along the center-line axis towards a cylindrical negative lens, the cylindrical negative lens that expands the light from the light source in sagittal planes, each formed by a locus of rays incident on a vertical line on an interior surface of the arched lens, an optical diffuser that scatters and homogenizes the light in the tangential plane defined by loci of optical axes of the cylindrical profile and thereby perpendicular to the sagittal planes, and a set of planar mirrors that fold the light at 90 degrees and direct it to the interior surface of the arched lens, wherein the arched lens collimates the light in the sagittal planes and facilitates unperturbed propagation of the collimated beam in the tangential plane, and wherein the illumination source slews along the center-line axis, and the output beam comprises a conic shape having a tilt angle relative to the tangential plane that is dynamically modulated proportionally to an amplitude at which the illumination source is slewed.