A device and method for projecting a first collimated light wave section 110 onto a diffusing surface 115 traversing along a first path d1 120 forming a first image, and projecting a second collimated light wave section 135 formed along a second path d2, d3, d4, 140 commencing at the collimated light source 105, directed by first 145 and second 150 specular surfaces, and terminating on a second portion 155 of the diffusing surface 115 forming a second image, wherein the length of the first path d1 120 is different than the length of the second path d2, d3, d4, 140.