A light recovery system for a projection display with a reflector having a
first and a second focal points. A source of electro-magnetic radiation
is disposed proximate to the first focal point of the reflector to emit
rays of radiation that reflect from the reflector and converge
substantially at the second focal point. A retro-reflector reflects at
least a portion of the electromagnetic radiation that does not impinge
directly on the reflector toward the reflector through the first focal
point of the reflector to increase the flux intensity of the converging
rays. A light pipe wit an input surface and an output surface is disposed
with the input surface proximate to the second focal point to collect and
transmit substantially all of the radiation. A PBS is disposed proximate
to the output surface to collect and polarize substantially all of the
radiation into a radiation of a first polarization and a second
polarization. Radiation of the first polarization is transmitted, while
radiation of the second polarization is reflected toward the output
surface. A wave plate is disposed in a path of the radiation of the
second polarization.