A lighting device comprising: - a light source configured to provide, in operation a light output, - a first reflector comprising a first reflective surface, and - a second reflector comprising a second reflective surface, wherein the first reflective surface is configured to face the second reflective surface, wherein the light source is configured to emit the light output towards the second reflective surface, wherein the second reflective surface comprises a plurality of sections, each section comprising a first section surface that faces away from a center axis of the light source and a second section surface that faces towards the center axis, characterised in that the first section surface comprises a light reflective surface configured to reflect at least a part of the light output away from the light source, towards the first reflective surface of the first reflector; wherein the second reflective surface is configured in a second plane that is perpendicular to the center axis, and each section of the plurality of sections has a first angle enclosed by the first section surface and the second plane, and the first angle is greater than 10 degrees and less than or equal to 40 degrees; and wherein the first reflector and the second reflector are flat and are configured parallel to each other. - a light source configured to provide, in operation a light output, - a first reflector comprising a first reflective surface, and - a second reflector comprising a second reflective surface, wherein the first reflective surface is configured to face the second reflective surface, wherein the light source is configured to emit the light output towards the second reflective surface, wherein the second reflective surface comprises a plurality of sections, each section comprising a first section surface that faces away from a center axis of the light source and a second section surface that faces towards the center axis, characterised in that the first section surface comprises a light reflective surface configured to reflect at least a part of the light output away from the light source, towards the first reflective surface of the first reflector; wherein the second reflective surface is configured in a second plane that is perpendicular to the center axis, and each section of the plurality of sections has a first angle enclosed by the first section surface and the second plane, and the first angle is greater than 10 degrees and less than or equal to 40 degrees; and wherein the first reflector and the second reflector are flat and are configured parallel to each other. wherein the first reflective surface is configured to face the second reflective surface, wherein the light source is configured to emit the light output towards the second reflective surface, wherein the second reflective surface comprises a plurality of sections, each section comprising a first section surface that faces away from a center axis of the light source and a second section surface that faces towards the center axis, characterised in that the first section surface comprises a light reflective surface configured to reflect at least a part of the light output away from the light source, towards the first reflective surface of the first reflector; wherein the second reflective surface is configured in a second plane that is perpendicular to the center axis, and each section of the plurality of sections has a first angle enclosed by the first section surface and the second plane, and the first angle is greater than 10 degrees and less than or equal to 40 degrees; and wherein the first reflector and the second reflector are flat and are configured parallel to each other.