An image display device includes a light source which outputs a first light including a first color light, a second color light and a third color light, a polarity converter which unifies polarities of the first light into a single polarity, a dichroic mirror which separates the first color light from...http://www.google.fr/patents/US7553024?utm_source=gb-gplus-shareBrevet US7553024 - Image display device
