A heat sink reflector comprising: a fin base defining a longitudinal axis and having first and second opposite surfaces (422, 424) extending along the longitudinal axis; fins extending from the first surface of the fin base substantially perpendicular to the longitudinal axis, each fin having a proximal end attached to the fin base and a distal end away from the fin base; characterised by further comprising: a reflector disposed on the distal end of at least one fin, the reflector defining a non-linear cross-sectional profile along the longitudinal axis, wherein the heat sink reflector defines a reflector longitudinal axis, wherein the reflector has a first end and a second end, the first end and the second end being opposite each other and located along the reflector longitudinal axis, wherein the heat sink reflector has a heat sink reflector first end and a heat sink reflector second end located at opposite ends along the reflector longitudinal axis, wherein the heat sink reflector has a first plane along the first end of the heat sink reflector and a second plane along the second end of the heat sink reflector, and wherein the second end of the reflector is located between the first plane and the second plane. a fin base defining a longitudinal axis and having first and second opposite surfaces (422, 424) extending along the longitudinal axis; fins extending from the first surface of the fin base substantially perpendicular to the longitudinal axis, each fin having a proximal end attached to the fin base and a distal end away from the fin base; characterised by further comprising: a reflector disposed on the distal end of at least one fin, the reflector defining a non-linear cross-sectional profile along the longitudinal axis, wherein the heat sink reflector defines a reflector longitudinal axis, wherein the reflector has a first end and a second end, the first end and the second end being opposite each other and located along the reflector longitudinal axis, wherein the heat sink reflector has a heat sink reflector first end and a heat sink reflector second end located at opposite ends along the reflector longitudinal axis, wherein the heat sink reflector has a first plane along the first end of the heat sink reflector and a second plane along the second end of the heat sink reflector, and wherein the second end of the reflector is located between the first plane and the second plane. a reflector disposed on the distal end of at least one fin, the reflector defining a non-linear cross-sectional profile along the longitudinal axis, wherein the heat sink reflector defines a reflector longitudinal axis, wherein the reflector has a first end and a second end, the first end and the second end being opposite each other and located along the reflector longitudinal axis, wherein the heat sink reflector has a heat sink reflector first end and a heat sink reflector second end located at opposite ends along the reflector longitudinal axis, wherein the heat sink reflector has a first plane along the first end of the heat sink reflector and a second plane along the second end of the heat sink reflector, and wherein the second end of the reflector is located between the first plane and the second plane.