An optoelectronic device for projecting a first beam (110) of coherent first electromagnetic radiation onto a surface (91) comprises a first radiation source (11), which is suitable for emitting a first beam (110) of coherent first electromagnetic radiation when in operation. The optoelectronic device additionally comprises a first phase-modifying element (21) in the beam path of the first electromagnetic radiation for changing the phase of the first electromagnetic radiation in a subzone (1102) of the first beam (110) and a radiation-directing element (4) in the beam path of the first electromagnetic radiation for changing a beam direction (P1, P2) of the first beam (110).