PROJECTEUR ELLIPTIQUE EQUIPE D'UN ECRAN D'OCCULTATION EN MATIERE TRANSPARENTE.

摘要

The projector has an occultation screen (30) including a transversal portion (38) which is made of a transparent material e.g. glass, and is traversed by a light beam. The portion (38) has a low transparency zone (50) which forms a low illumination zone in the light beam for adverse weather lighting. An opaque material is deposited on transversal sides (40, 42) of the portion (38) and has selected density and thickness.