A light source unit is provided with a substrate and segments of a reflector. The substrate has a plurality of light-emitting devices mounted on its central and peripheral portions. The segments correspond to the light-emitting devices, individually. The segment corresponding to the light-emitting devices...http://www.google.com.au/patents/US8128263?utm_source=gb-gplus-sharePatent US8128263 - Light source unit and lighting apparatus having light-emitting diodes for light source
