Fig. 2

Phase space and propagated beam paths in the original and transformed systems. The lens profile in a does not have perfectly uniform groove heights due to finite samplings. a Profile of the kinoform lens, b Phase space of the incident light, c Phase space of the convergent beam leaving the kinoform lens, d Intensity of the propagated beam path in the original system, e Phase space of the collimated beam leaving the paraxial negative lens, f Intensity of the propagated beam path in the transformed system, g transverse intensity after propagation