Abstract: 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.

Abstract: Process for producing a microoptical functional unit which is made of at least two interconnected flat parts which each are one optical functional elements. The interconnected two flat parts are provided with a number of optically functional sections ane, on the sides of the flat parts facing one another positioning aids are formed which facilitate alignment of at least two flat parts to one another.