Lighting device, lighting kit and luminaire

A lighting device comprising:

• a solid state lighting element;
• a reflective arrangement for reflecting luminous output of the solid state lighting element, the reflective arrangement comprising:
• a reflective conical central section on a central axis of the lighting device;
• and
• an annular reflective body around the reflective conical central section, said body comprising an ellipsoid surface having a first focal point lying inside the reflective conical central section and a second focal point, wherein the solid state lighting element is located at the second focal point;
• and
• wherein the reflective conical central section is movably mounted along said central axis;
• wherein the annular reflective body comprises an annular array of reflective ellipsoid surfaces extending radially from said reflective conical central section, each reflective ellipsoid surface having a first focal point inside the reflective conical central section and a second focal point;
• and
• the lighting device comprises a plurality of solid state lighting elements, each solid state lighting element being located at a respective one of said second focal points, and arranged to emit light towards said reflective ellipsoid surface.