Patent ID: 7151874
Filing Date: 2006-12-19
Classification: G02B,H04N,Y10S

Abstract:
1. A portable front projection system comprising: an optical coupling element, said optical coupling element further comprising: a TLP to be illuminated with at least a portion of the electromagnetic radiation emitted by said source, said TLP having an input end and an output end; a curved surface disposed fixedly to said output end; a primary reflector having a first focal point and a first optical axis; a secondary reflector having a second focal point and a second optical axis placed substantially symmetrically to said primary reflector such that said first and second optical axes are substantially collinear; a source of electro-magnetic radiation proximate to said first focal point to emit rays of radiation that reflect from said primary reflector toward said secondary reflector and converge substantially at said second focal point, said source being removably disposed in a fixture; a power supply for said source disposed fixedly near said source; and wherein said input end of said TLP is located proximate to said second focal point; wherein: a corner of said primary reflector is truncated along a plane substantially parallel to said first optical axis.