Tailorable truncated retroreflector array (TTRA) technology can be used to design ceiling medallions, which can be made entirely of plastic, where the reflective surfaces of the ceiling medallions provide a unique and beautiful glow that changes with the source or sources of light encountering the surfaces and the location of the viewer relative to the surface. Figures 1 and 2 each show four pictures taken from four different view angles of a two prototype ceiling medallion that were created using a deposition 3D printer. Both prototypes were created using an isosceles triangle truncating object with a 45° non-congruent angle and 0° truncation rotation.
Figures 3 and 4 depict third and fourth prototype ceiling medallions produced using a resin 3D printer. The third prototype was created using an isosceles triangle truncating object with a 45° non-congruent angle and 15° truncation rotation and the fourth prototype was created using a right isosceles triangle truncating object with a 15° truncation rotation.
Figures 5 and 6 provide closeup views of the retroreflector and light-redirecting portions of the reflective surfaces of the third and fourth ceiling medallion prototypes.