A light guide assembly, as a linear light source, includes a light guide bar connected to a light source assembly and a reflective housing encasing the light guide bar. One surface of the light guide bar is a light-scattering/light-emission surface, and other surfaces are all reflective. The emission...http://www.google.com/patents/US20050276064?utm_source=gb-gplus-sharePatent US20050276064 - Linear light source for enhancing uniformity of beaming light within the beaming light's effective focal range
