A luminaire comprising a surface tile and a lighting device, the lighting device being arranged proximal to an edge of the surface tile, and the surface tile having a surface area larger than, wherein the lighting device comprises: - a light guide having an elongate surface arrangement extending between opposing end surfaces (120, 120'), and - a light source at one of the end surfaces (120, 120') of the light guide and arranged to emit its luminous output into the light guide through said end surface (120, 120'), characterized in that the elongate surface arrangement of the light guide comprises a first surface portion and an opposing second surface portion, wherein the first surface portion comprises a first light outcoupling structure and a second light outcoupling structure spatially separated from each other, each extending in the elongation direction of the elongate surface arrangement, wherein the first light outcoupling structure is dimensioned to generate a first illumination profile from the second surface portion that has a first angular distribution, wherein the second light outcoupling structure is dimensioned to generate a second illumination profile from the second surface portion that is spatially distinct to the first illumination profile and has a second angular distribution, and wherein the first illumination profile and the second illumination profile are projected across the surface area of the surface tile to illuminate different regions of the surface tile and in combination provide a uniform illumination of the surface tile. wherein the lighting device comprises: - a light guide having an elongate surface arrangement extending between opposing end surfaces (120, 120'), and - a light source at one of the end surfaces (120, 120') of the light guide and arranged to emit its luminous output into the light guide through said end surface (120, 120'), - a light guide having an elongate surface arrangement extending between opposing end surfaces (120, 120'), and - a light source at one of the end surfaces (120, 120') of the light guide and arranged to emit its luminous output into the light guide through said end surface (120, 120'), characterized in that the elongate surface arrangement of the light guide comprises a first surface portion and an opposing second surface portion, wherein the first surface portion comprises a first light outcoupling structure and a second light outcoupling structure spatially separated from each other, each extending in the elongation direction of the elongate surface arrangement, wherein the first light outcoupling structure is dimensioned to generate a first illumination profile from the second surface portion that has a first angular distribution, wherein the second light outcoupling structure is dimensioned to generate a second illumination profile from the second surface portion that is spatially distinct to the first illumination profile and has a second angular distribution, and wherein the first illumination profile and the second illumination profile are projected across the surface area of the surface tile to illuminate different regions of the surface tile and in combination provide a uniform illumination of the surface tile.