An illuminating device includes a tubular light guide, a plurality of light-emitting devices, and a base. The tubular light guide has a light input edge and an inner space. The light-emitting devices are distributed at the light input edge to provide lights into the tubular light guide. The base supports...http://www.google.ca/patents/US8201983?utm_source=gb-gplus-sharePatent US8201983 - Illuminating device
