ILLUMINATING MEANS FOR PRODUCING A LIGHT BEAM HAVING ADJUSTABLE LIGHT INTENSITY DISTRIBUTION AND IMAGE TRANSFER SYSTEM COMPRISING SUCH A MEANS

摘要

Illuminating device comprising a laser source providing a coherent beam with gaussian distribution of intensity and means for separating the initial beam into four parts along two orthogonal directions, means for recombining the four parts resulting in their partial superimposition in a predetermined plane and means for averaging the interferences produced in the plane by the four parts.