The invention relates to an apparatus for shaping a light beam, having at
least two optically functional boundary surfaces that are arranged one
behind another in the propagation direction (z) of the light beam to be
shaped, such that the light beam can pass through the at least two
optically functional boundary surfaces one after another, and two groups
of refractive or diffractive imaging elements that are arranged on at
least one of the optically functional boundary surfaces, at least two of
the imaging elements having different properties within at least one of
the groups.