It is disclosed the image display system having a projecting device 30 for projecting a first image; a transparent screen device 10 on a rear plane of which the first image projected by the projecting device 30 is focused and on a front plane of which a second image near the first image indicated by...http://www.google.es/patents/US7483015?utm_source=gb-gplus-sharePatente US7483015 - Image display system
