3-DIMENSIONAL IMAGE PROJECTING DEVICE

PROBLEM TO BE SOLVED: To realize a 3-dimensional image projecting device having simple structure and realizing a bright and easy-to-view stereoscopic picture around which an unnecessary image does not appear by one projector. SOLUTION: The projecting device is constituted so that the stereoscopic picture constituted by arranging stereoscopic right and left pictures up and down is projected from the projector, and this projected luminous flux is divided into two at both-picture division point P corresponding to a boundary between both pictures, and the divided luminous fluxes of both pictures are respectively made to pass through a 1st mirror, a 2nd mirror and filters corresponding to them, and further made to go via a common 3rd mirror so as to superpose and project both pictures onto a screen. The projected both pictures are stereoscopically viewed through filter spectacles. The stereoscopic vision of the easy-to-view picture is realized by a shielding plate set on a side corresponding to the boundary between both pictures and coming into contact with the division point P at a position astern of the division point P, and getting into the picture by almost half of blur width so as to intercept the unnecessary luminous flux. COPYRIGHT: (C)2006,JPO&NCIPI