An illumination system includes a plurality of radiation generating
sources, such as LED dies. A corresponding plurality of optical
waveguides is also provided, with each waveguide having a first and a
second end, with each first end being in optical communication with the
corresponding LED die. An array of corresponding passive optical elements
is interposed between the plurality of LED dies and the corresponding
first ends of the plurality of optical waveguides. The illumination
system provides for substantially high light coupling efficiency and an
incoherent light output that can appear to the human observer as arising
from a single point of light. In addition, the light can be output
remotely at one or more locations and in one or more directions.