Aircraft beacon device of a wind power installation, to be arranged on a gondola of the wind power installation, comprising: - at least three omnidirectional emission sections (210, 211, 212) arranged concentrically in a ring around a common mid-axis, each omnidirectional emission section comprising o a lens section (220, 221, 222) arranged concentrically in a ring around the mid-axis, with a beam plane (230, 231, 232) defined perpendicularly to the mid-axis, and o at least one lighting means ring (240, 241, 242, 243, 244, 245, 246) having lighting means arranged concentrically in a ring around the mid-axis in order to emit light through the lens section, wherein ▪ each lighting means ring is configured in order to emit light with a central emission direction (370, 371, 372) which makes an emission angle (380, 381, 382) with the beam plane, and wherein the emission direction depends on an axial position of the lighting means ring with respect to the lens section, wherein - at least one omnidirectional emission section comprises at least two lighting means rings offset axially with respect to one another for emission with different emission angles, wherein - the aircraft beacon device comprises a control unit which is configured to vary the emission characteristic of the aircraft beacon device by selective driving the two lighting means rings. - at least three omnidirectional emission sections (210, 211, 212) arranged concentrically in a ring around a common mid-axis, each omnidirectional emission section comprising o a lens section (220, 221, 222) arranged concentrically in a ring around the mid-axis, with a beam plane (230, 231, 232) defined perpendicularly to the mid-axis, and o at least one lighting means ring (240, 241, 242, 243, 244, 245, 246) having lighting means arranged concentrically in a ring around the mid-axis in order to emit light through the lens section, wherein ▪ each lighting means ring is configured in order to emit light with a central emission direction (370, 371, 372) which makes an emission angle (380, 381, 382) with the beam plane, and wherein the emission direction depends on an axial position of the lighting means ring with respect to the lens section, wherein o a lens section (220, 221, 222) arranged concentrically in a ring around the mid-axis, with a beam plane (230, 231, 232) defined perpendicularly to the mid-axis, and o at least one lighting means ring (240, 241, 242, 243, 244, 245, 246) having lighting means arranged concentrically in a ring around the mid-axis in order to emit light through the lens section, wherein ▪ each lighting means ring is configured in order to emit light with a central emission direction (370, 371, 372) which makes an emission angle (380, 381, 382) with the beam plane, and wherein the emission direction depends on an axial position of the lighting means ring with respect to the lens section, wherein - at least one omnidirectional emission section comprises at least two lighting means rings offset axially with respect to one another for emission with different emission angles, wherein - the aircraft beacon device comprises a control unit which is configured to vary the emission characteristic of the aircraft beacon device by selective driving the two lighting means rings.