A displaying optical system is disclosed, which is capable of reducing a speckle noise. The displaying optical system comprises a light source emitting coherent light, a scanning device scanning the light, a first optical system causing the light from the scanning device to form an intermediate image,...http://www.google.fr/patents/US7572015?utm_source=gb-gplus-shareBrevet US7572015 - Displaying optical system and image projection apparatus
Displaying optical system and image projection apparatus
