Abstract: The invention relates to an arrangement for shifting optical images between individual channels. A plurality of imaging optical systems adapted to image conjugately upon each other, in an associated shiftable optical channel, an associated plane and an intermediate image plane, comprise a micro-mechanical mirror system (mirror array) arranged in the intermediate image plane and having a grid of mirror elements adapted to be tilted and actuated. A further imaging optical system is adapted to image conjugately upon each other, in a common channel, the intermediate image plane and a plane associated with the common channel. The mirror elements of the micro-mechanical system are adapted to be actuated in such a manner, that they optically connect optionally one of the shiftable channels to the common channel.