An optical arrangement comprises a multichannel imaging system for optically scanning an object plane in fields of view, which adjoin one another or overlap in the object plane, of a plurality of optical channels of the multichannel imaging system and a waveguide, which is arranged between the object plane and the multichannel imaging system in order to guide light laterally in the waveguide, wherein the waveguide has a multiplicity of deflection structures, which are arranged on a side facing the object plane and/or on a side facing the multichannel imaging system, which sides are part of the waveguide, wherein the deflection structures are arranged in dead zones between the fields of view of the optical channels, and wherein the deflection structures are configured to deflect the guided light in the direction of the object plane such that the object plane is illuminated.