Efficient light collector for projection display system

A light engine for a projection display system comprising:

• (a) a light collection system comprising a parabolic reflector, the parabolic reflector comprising a compound parabolic reflector surface having a first focal point and a second focal point, the compound parabolic reflector surface comprising a primary parabolic reflector section defining the first focal point and a secondary parabolic reflector section defining second focal point, the sections being paraboloid sections and being positioned coaxially with respect to one another, so that a light source placed at the first focal point defined by the primary parabolic reflector section is imaged at the second focal point defined by the secondary parabolic reflector section, characterized in that the secondary parabolic reflector section is divided into a plurality of segments, whereby for each segment, a separate focal point is defined and a separate image is produced;
• (b) light guiding means including at least one light guide having at least one input face and at least one output face, each input face positioned to input one of the plurality of images produced by the light collection system in which the light guide comprises:
• a main section having;
• a longitudinal axis,
• a stepped input end with a plurality of input
• faces displaced longitudinally from one another, and
• an output end having an output face,
• a plurality of input sections, each having an input face and an output face, and
• a plurality of coupling sections for coupling the input sections to the main section, each coupling section positioned between an output face of an input section and an input face of the main section.