Abstract: An apparatus which includes an optical spinner having a surface rotatable about an axis that is substantially perpendicular to the surface at its point of intersection with the axis. A source of coherent radiation is directed toward the surface and a zone-type lens covering at least a portion of the surface is configured to receive the radiation and direct it toward a first scanning focal point locus. An auxiliary reflective means is disposed in the path of the directed radiation, the reflective means being shaped to redirect the radiation toward a second scanning focal point locus, such that the principal ray of the radiation is substantially perpendicular to the axis. In this manner, the problems generally encountered with non-normal impinging light bundles are overcome.