Stereoscopic projector

Claim 1

A stereoscopic projector comprising: a condenser member for leading a beam from a light source to advance in parallel to an optical axis thereof, said condenser member including: a light source for generating a light containing three primary color lights, a non-spherical reflective mirror having an angle range about 2π (Steradian unit) from said light source for leading a beam emitted backward from the light source to advance forward in parallel, a beam guide unit arranged in front of the light source for allowing the beams in parallel with the optical axis of the condenser member among the beams from sid non-spherical reflective mirror and light source to pass therethrough and having a plurality of cylinders whose radiuses become gradually increased and has an axis-symmetrical structure with the condenser member, and a reflective mirror member including a plurality of ringular band-type spherical mirrors having a center of curvature identical to that of the light source for reflecting the beams emitted forward in a ringular band-type toward the light source, a first polarizing beam splitter arranged such that parallel beams from said condenser member are incident thereupon perpendicularly for splitting said parallel beams into two polarizing beams having the polarizing directions perpendicular to each other, first and second mirrors arranged in slant at 45° with respect to the advancing direction of said two polarizing beams for reflecting said two polarizing beams splitted in perpendicular to each other from said first polarizing beam splitter so as to be crossed with each other, a second polarizing beam splitter, a field lens, and a projection lens arranged such that said two polarizing beams reflected at the first mirror and the second mirror, respectively, are added to each other and allowed to pass through said field lens and projection lens, and first and second LCD panels arranged between said second polarizing beam splitter and said first and second mirror for allowing said two polarizing beams reflected at the first and second mirrors to pass therethrough, respectively, and for transmitting a liquid crystal display image signal to the projection lens by means of said two polarizing beams.