A multi-level optical device that includes a housing. Further, a
multi-level lightpipe is placed in the housing and includes at least two
paths for passing light. A lightpipe barrier can optionally be placed
between the at least two paths in the multi-level lightpipe, to provide
enhanced separation between the light passing through the two paths.
Further, a plurality of light emitting diodes (LEDs) are provided in the
housing. Respective ones of the plurality of LEDs provide light input
into a respective one of the paths of the multi-level lightpipe. The
multi-level lightpipe can take the form of a bi-level prism, and the
plurality of LEDs may be multi-color LEDs. A light-bleeding preventing
device can be positioned between the at least two paths in the
multi-level lightpipe. The multi-level lightpipe can also include plural
multi-level lightpipes arranged in a row to create a matrix of output
light signals.