Patent ID: 8169474

Claim:
Illumination device ( 102 , 104 , 130 ) comprising a means for generating an illumination lobe ( 106 , 108 ) comprising a maximum and representative of its luminance in a horizontal plane, each generating means comprising means for forming a lobe ( 106 , 108 ) that is asymmetric with respect to a straight line bearing the maximum and having, from this maximum, a first front ( 122 ) that is curved and a second front ( 120 ) that is substantially plane, the illumination device ( 102 , 104 , 130 ) comprising: an opaque cage ( 302 ) with a window ( 314 ) made therein; and said generating means further comprising: a) a frosted glass ( 308 ) disposed inside the cage ( 302 ); b) a light source ( 304 ) disposed inside the cage ( 302 ) and emitting a light flux through the window ( 314 ) after passing through the frosted glass ( 308 ); and c) a micro-prism film ( 312 ) disposed between the frosted glass ( 308 ) and the window ( 314 ) and comprising a plane face oriented towards the frosted glass ( 308 ) and a face bearing prisms ( 316 ) oriented towards the window ( 314 ).